1 <!doctype linuxdoc system> <!-- -*- text-mode -*- -->
4 <title>cc65 function reference
5 <author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
9 cc65 is a C compiler for 6502 based systems. This function reference describes
10 the C functions available in the standard library.
13 <!-- Table of contents -->
16 <!-- Begin the document -->
20 cc65 is a C compiler for 6502 based systems. It implements a subset of the ISO
21 C standard plus additional functions specially crafted for 6502 systems or
22 just some of the supported machines. This function refrence describes the
23 available functions together with any limitations.
25 For an overview about the available libraries, their purpose, and any
26 differences to the ISO standard, please have a look at the <htmlurl
27 url="library.html" name="cc65 Library Overview">.
29 <bf/Note:/ Standard C functions are listed here, but not described in detail.
30 Since these functions behave identical on all standard compliant systems, they
31 are described in any book covering standard C.
33 Each entry for a function contains a detailed description
37 <tag/Function/Summary of what <bf/function/ does.
38 <tag/Header/The header file that contains the declaration.
39 <tag/Declaration/Describes the needed header files and declaration of the
41 <tag/Description/Description of the function.
43 <tag/Availability/The availability of the function.
44 <tag/See also/Other related functions.
45 <tag/Example/A piece of actual code using the function.
50 <sect>Functions by header file<p>
52 <sect1><tt/6502.h/<label id="6502.h"><p>
55 <item><ref id="BRK" name="BRK">
56 <item><ref id="CLI" name="CLI">
57 <item><ref id="SEI" name="SEI">
58 <item><ref id="_sys" name="_sys">
59 <item><ref id="getcpu" name="getcpu">
60 <item><ref id="reset_brk" name="reset_brk">
61 <item><ref id="reset_irq" name="reset_irq">
62 <item><ref id="set_brk" name="set_brk">
63 <item><ref id="set_irq" name="set_irq">
67 <sect1><tt/apple2.h/<label id="apple2.h"><p>
71 <item><ref id="get_ostype" name="get_ostype">
76 <sect1><tt/apple2enh.h/<label id="apple2enh.h"><p>
80 <item><ref id="get_ostype" name="get_ostype">
84 <item><ref id="videomode" name="videomode">
88 <sect1><tt/assert.h/<label id="assert.h"><p>
91 <item><ref id="assert" name="assert">
95 <sect1><tt/atari.h/<label id="atari.h"><p>
98 <!-- <item><ref id="_getcolor" name="_getcolor"> -->
99 <!-- <item><ref id="_getdefdev" name="_getdefdev"> -->
100 <!-- <item><ref id="_graphics" name="_graphics"> -->
101 <!-- <item><ref id="_rest_vecs" name="_rest_vecs"> -->
102 <!-- <item><ref id="_save_vecs" name="_save_vecs"> -->
103 <!-- <item><ref id="_scroll" name="_scroll"> -->
104 <!-- <item><ref id="_setcolor" name="_setcolor"> -->
105 <!-- <item><ref id="_setcolor_low" name="_setcolor_low"> -->
106 <item><ref id="get_ostype" name="get_ostype">
107 <!-- <item><ref id="get_tv" name="get_tv"> -->
113 <sect1><tt/atmos.h/<label id="atmos.h"><p>
116 <item><ref id="atmos_load" name="atmos_load">
117 <item><ref id="atmos_save" name="atmos_save">
121 <sect1><tt/c128.h/<label id="c128.h"><p>
124 <item><ref id="c64mode" name="c64mode">
125 <item><ref id="fast" name="fast">
126 <item><ref id="slow" name="slow">
127 <item><ref id="toggle_videomode" name="toggle_videomode">
128 <item><ref id="videomode" name="videomode">
132 <sect1><tt/c16.h/<label id="c16.h"><p>
137 <sect1><tt/c64.h/<label id="c64.h"><p>
140 <item><ref id="get_ostype" name="get_ostype">
144 <sect1><tt/cbm.h/<label id="cbm.h"><p>
147 <item><ref id="cbm_k_acptr" name="cbm_k_acptr">
148 <item><ref id="cbm_k_basin" name="cbm_k_basin">
149 <item><ref id="cbm_k_bsout" name="cbm_k_bsout">
150 <item><ref id="cbm_k_chkin" name="cbm_k_chkin">
151 <item><ref id="cbm_k_ciout" name="cbm_k_ciout">
152 <item><ref id="cbm_k_ckout" name="cbm_k_ckout">
153 <item><ref id="cbm_k_clall" name="cbm_k_clall">
154 <item><ref id="cbm_k_close" name="cbm_k_close">
155 <item><ref id="cbm_k_clrch" name="cbm_k_clrch">
156 <item><ref id="cbm_k_getin" name="cbm_k_getin">
157 <item><ref id="cbm_k_iobase" name="cbm_k_iobase">
158 <item><ref id="cbm_k_listen" name="cbm_k_listen">
159 <item><ref id="cbm_k_load" name="cbm_k_load">
160 <item><ref id="cbm_k_open" name="cbm_k_open">
161 <item><ref id="cbm_k_readst" name="cbm_k_readst">
162 <item><ref id="cbm_k_save" name="cbm_k_save">
163 <item><ref id="cbm_k_setlfs" name="cbm_k_setlfs">
164 <item><ref id="cbm_k_setnam" name="cbm_k_setnam">
165 <item><ref id="cbm_k_unlsn" name="cbm_k_unlsn">
166 <!-- <item><ref id="cbm_load" name="cbm_load"> -->
167 <!-- <item><ref id="cbm_open" name="cbm_open"> -->
168 <!-- <item><ref id="cbm_opendir" name="cbm_opendir"> -->
169 <!-- <item><ref id="cbm_read" name="cbm_read"> -->
170 <!-- <item><ref id="cbm_readdir" name="cbm_readdir"> -->
171 <!-- <item><ref id="cbm_save" name="cbm_save"> -->
172 <!-- <item><ref id="cbm_write" name="cbm_write"> -->
178 <sect1><tt/cbm510.h/<label id="cbm510.h"><p>
181 <item><ref id="peekbsys" name="peekbsys">
182 <item><ref id="peekwsys" name="peekwsys">
183 <item><ref id="pokebsys" name="pokebsys">
184 <item><ref id="pokewsys" name="pokewsys">
188 <sect1><tt/cbm610.h/<label id="cbm610.h"><p>
191 <item><ref id="peekbsys" name="peekbsys">
192 <item><ref id="peekwsys" name="peekwsys">
193 <item><ref id="pokebsys" name="pokebsys">
194 <item><ref id="pokewsys" name="pokewsys">
198 <sect1><tt/cc65.h/<label id="cc65.h"><p>
201 <!-- <item><ref id="cc65_cos" name="cc65_cos"> -->
202 <!-- <item><ref id="cc65_idiv32by16r16" name="cc65_idiv32by16r16"> -->
203 <!-- <item><ref id="cc65_imul16x16r32" name="cc65_imul16x16r32"> -->
204 <!-- <item><ref id="cc65_imul8x8r16" name="cc65_imul8x8r16"> -->
205 <!-- <item><ref id="cc65_sin" name="cc65_sin"> -->
206 <!-- <item><ref id="cc65_udiv32by16r16" name="cc65_udiv32by16r16"> -->
207 <!-- <item><ref id="cc65_umul16x16r32" name="cc65_umul16x16r32"> -->
208 <!-- <item><ref id="cc65_umul16x8r32" name="cc65_umul16x8r32"> -->
209 <!-- <item><ref id="cc65_umul8x8r16" name="cc65_umul8x8r16"> -->
215 <sect1><tt/conio.h/<label id="conio.h"><p>
218 <item><ref id="bgcolor" name="bgcolor">
219 <item><ref id="bordercolor" name="bordercolor">
220 <item><ref id="cclear" name="cclear">
221 <item><ref id="cclearxy" name="cclearxy">
222 <item><ref id="cgetc" name="cgetc">
223 <item><ref id="chline" name="chline">
224 <item><ref id="chlinexy" name="chlinexy">
225 <item><ref id="clrscr" name="clrscr">
226 <item><ref id="cprintf" name="cprintf">
227 <item><ref id="cputc" name="cputc">
228 <item><ref id="cputcxy" name="cputcxy">
229 <item><ref id="cputs" name="cputs">
230 <item><ref id="cputsxy" name="cputsxy">
231 <item><ref id="cursor" name="cursor">
232 <item><ref id="cvline" name="cvline">
233 <item><ref id="cvlinexy" name="cvlinexy">
234 <item><ref id="gotox" name="gotox">
235 <item><ref id="gotoxy" name="gotoxy">
236 <item><ref id="gotoy" name="gotoy">
237 <item><ref id="kbhit" name="kbhit">
238 <item><ref id="revers" name="revers">
239 <item><ref id="screensize" name="screensize">
240 <item><ref id="textcolor" name="textcolor">
241 <item><ref id="vcprintf" name="vcprintf">
242 <item><ref id="wherex" name="wherex">
243 <item><ref id="wherey" name="wherey">
247 <sect1><tt/ctype.h/<label id="ctype.h"><p>
250 <item><ref id="isalnum" name="isalnum">
251 <item><ref id="isalpha" name="isalpha">
252 <item><ref id="isascii" name="isascii">
253 <item><ref id="isblank" name="isblank">
254 <item><ref id="iscntrl" name="iscntrl">
255 <item><ref id="isdigit" name="isdigit">
256 <item><ref id="isgraph" name="isgraph">
257 <item><ref id="islower" name="islower">
258 <item><ref id="isprint" name="isprint">
259 <item><ref id="ispunct" name="ispunct">
260 <item><ref id="isspace" name="isspace">
261 <item><ref id="isupper" name="isupper">
262 <item><ref id="isxdigit" name="isxdigit">
263 <item><ref id="tolower" name="tolower">
264 <item><ref id="toupper" name="toupper">
268 <sect1><tt/dbg.h/<label id="dbg.h"><p>
271 <!-- <item><ref id="DbgInit" name="DbgInit"> -->
277 <sect1><tt/dio.h/<label id="dio.h"><p>
279 <htmlurl url="dio.html" name="dio.html">
280 Low-level disk I/O API.
283 <sect1><tt/dirent.h/<label id="dirent.h"><p>
286 <item><ref id="_DE_ISDIR" name="_DE_ISDIR">
287 <item><ref id="_DE_ISLBL" name="_DE_ISLBL">
288 <item><ref id="_DE_ISLNK" name="_DE_ISLNK">
289 <item><ref id="_DE_ISREG" name="_DE_ISREG">
290 <item><ref id="closedir" name="closedir">
291 <item><ref id="opendir" name="opendir">
292 <item><ref id="readdir" name="readdir">
293 <item><ref id="rewinddir" name="rewinddir">
294 <item><ref id="seekdir" name="seekdir">
295 <item><ref id="telldir" name="telldir">
301 <sect1><tt/em.h/<label id="em.h"><p>
304 <item><ref id="em_commit" name="em_commit">
305 <item><ref id="em_copyfrom" name="em_copyfrom">
306 <item><ref id="em_copyto" name="em_copyto">
307 <item><ref id="em_install" name="em_install">
308 <item><ref id="em_load_driver" name="em_load_driver">
309 <item><ref id="em_map" name="em_map">
310 <item><ref id="em_pagecount" name="em_pagecount">
311 <item><ref id="em_uninstall" name="em_uninstall">
312 <item><ref id="em_unload" name="em_unload">
313 <item><ref id="em_use" name="em_use">
317 <sect1><tt/errno.h/<label id="errno.h"><p>
320 <!-- <item><ref id="_directerrno" name="_directerrno"> -->
321 <!-- <item><ref id="_mappederrno" name="_mappederrno"> -->
322 <!-- <item><ref id="_osmaperrno" name="_osmaperrno"> -->
323 <!-- <item><ref id="_seterrno" name="_seterrno"> -->
329 <sect1><tt/fcntl.h/<label id="fcntl.h"><p>
332 <item><ref id="close" name="close">
333 <item><ref id="creat" name="creat">
334 <item><ref id="open" name="open">
338 <sect1><tt/geos.h/<label id="geos.h"><p>
343 <sect1><tt/joystick.h/<label id="joystick.h"><p>
346 <item><ref id="joy_count" name="joy_count">
347 <item><ref id="joy_install" name="joy_install">
348 <item><ref id="joy_load_driver" name="joy_load_driver">
349 <item><ref id="joy_read" name="joy_read">
350 <item><ref id="joy_uninstall" name="joy_uninstall">
351 <item><ref id="joy_unload" name="joy_unload">
355 <sect1><tt/locale.h/<label id="locale.h"><p>
358 <item><ref id="localeconv" name="localeconv">
359 <item><ref id="setlocale" name="setlocale">
363 <sect1><tt/lynx.h/<label id="lynx.h"><p>
366 <!-- <item><ref id="lynx_eeprom_erase" name="lynx_eeprom_erase"> -->
367 <!-- <item><ref id="lynx_eeprom_read" name="lynx_eeprom_read"> -->
368 <!-- <item><ref id="lynx_eeprom_write" name="lynx_eeprom_write"> -->
369 <!-- <item><ref id="lynx_eeread" name="lynx_eeread"> -->
370 <!-- <item><ref id="lynx_eewrite" name="lynx_eewrite"> -->
371 <!-- <item><ref id="lynx_exec" name="lynx_exec"> -->
372 <!-- <item><ref id="lynx_load" name="lynx_load"> -->
378 <sect1><tt/modload.h/<label id="modload.h"><p>
381 <item><ref id="mod_load" name="mod_load">
382 <item><ref id="mod_free" name="mod_free">
386 <sect1><tt/mouse.h/<label id="mouse.h"><p>
389 <item><ref id="mouse_buttons" name="mouse_buttons">
390 <item><ref id="mouse_getbox" name="mouse_getbox">
391 <item><ref id="mouse_geterrormsg" name="mouse_geterrormsg">
392 <item><ref id="mouse_hide" name="mouse_hide">
393 <item><ref id="mouse_info" name="mouse_info">
394 <item><ref id="mouse_install" name="mouse_install">
395 <item><ref id="mouse_ioctl" name="mouse_ioctl">
396 <item><ref id="mouse_load_driver" name="mouse_load_driver">
397 <item><ref id="mouse_move" name="mouse_move">
398 <item><ref id="mouse_pos" name="mouse_pos">
399 <item><ref id="mouse_setbox" name="mouse_setbox">
400 <item><ref id="mouse_show" name="mouse_show">
401 <item><ref id="mouse_uninstall" name="mouse_uninstall">
402 <item><ref id="mouse_unload" name="mouse_unload">
406 <sect1><tt/nes.h/<label id="nes.h"><p>
409 <!-- <item><ref id="get_tv" name="get_tv"> -->
410 <!-- <item><ref id="waitvblank" name="waitvblank"> -->
416 <sect1><tt/o65.h/<label id="o65.h"><p>
418 The <tt/o65.h/ header file contains structure and constant definitions that
419 may be used when dealing with files in <htmlurl
420 url="http://www.6502.org/users/andre/o65/fileformat.html" name="o65 format">.
421 It does not declare any functions.
424 <sect1><tt/peekpoke.h/<label id="peekpoke.h"><p>
427 <item><ref id="PEEK" name="PEEK">
428 <item><ref id="PEEKW" name="PEEKW">
429 <item><ref id="POKE" name="POKE">
430 <item><ref id="POKEW" name="POKEW">
434 <sect1><tt/pet.h/<label id="pet.h"><p>
439 <sect1><tt/plus4.h/<label id="plus4.h"><p>
444 <sect1><tt/serial.h/<label id="serial.h"><p>
446 The <tt/serial.h/ header file contains definitions for initializing serial
450 <item><ref id="ser_close" name="ser_close">
451 <item><ref id="ser_get" name="ser_get">
452 <item><ref id="ser_install" name="ser_install">
453 <item><ref id="ser_ioctl" name="ser_ioctl">
454 <item><ref id="ser_load_driver" name="ser_load_driver">
455 <item><ref id="ser_open" name="ser_open">
456 <item><ref id="ser_put" name="ser_put">
457 <item><ref id="ser_status" name="ser_status">
458 <item><ref id="ser_uninstall" name="ser_uninstall">
459 <item><ref id="ser_unload" name="ser_unload">
463 <sect1><tt/setjmp.h/<label id="setjmp.h"><p>
466 <item><ref id="setjmp" name="setjmp">
467 <item><ref id="longjmp" name="longjmp">
471 <sect1><tt/signal.h/<label id="signal.h"><p>
474 <item><ref id="raise" name="raise">
475 <item><ref id="signal" name="signal">
479 <sect1><tt/stdarg.h/<label id="stdarg.h"><p>
484 <sect1><tt/stdbool.h/<label id="stdbool.h"><p>
489 <sect1><tt/stddef.h/<label id="stddef.h"><p>
492 <item><ref id="offsetof" name="offsetof">
496 <sect1><tt/stdio.h/<label id="stdio.h"><p>
499 <item><ref id="_poserror" name="_poserror">
500 <item><ref id="clearerr" name="clearerr">
501 <!-- <item><ref id="fclose" name="fclose"> -->
502 <!-- <item><ref id="fdopen" name="fdopen"> -->
503 <item><ref id="feof" name="feof">
504 <item><ref id="ferror" name="ferror">
505 <!-- <item><ref id="fflush" name="fflush"> -->
506 <!-- <item><ref id="fgetc" name="fgetc"> -->
507 <!-- <item><ref id="fgetpos" name="fgetpos"> -->
508 <!-- <item><ref id="fgets" name="fgets"> -->
509 <item><ref id="fileno" name="fileno">
510 <!-- <item><ref id="fopen" name="fopen"> -->
511 <!-- <item><ref id="fprintf" name="fprintf"> -->
512 <!-- <item><ref id="fputc" name="fputc"> -->
513 <!-- <item><ref id="fputs" name="fputs"> -->
514 <!-- <item><ref id="fread" name="fread"> -->
515 <!-- <item><ref id="freopen" name="freopen"> -->
516 <!-- <item><ref id="fscanf" name="fscanf"> -->
517 <!-- <item><ref id="fseek" name="fseek"> -->
518 <!-- <item><ref id="fsetpos" name="fsetpos"> -->
519 <!-- <item><ref id="ftell" name="ftell"> -->
520 <!-- <item><ref id="fwrite" name="fwrite"> -->
521 <!-- <item><ref id="getc" name="getc"> -->
522 <!-- <item><ref id="getchar" name="getchar"> -->
523 <!-- <item><ref id="gets" name="gets"> -->
524 <!-- <item><ref id="printf" name="printf"> -->
525 <!-- <item><ref id="putc" name="putc"> -->
526 <!-- <item><ref id="putchar" name="putchar"> -->
527 <!-- <item><ref id="puts" name="puts"> -->
528 <item><ref id="rename" name="rename">
529 <item><ref id="remove" name="remove">
530 <!-- <item><ref id="rewind" name="rewind"> -->
531 <!-- <item><ref id="scanf" name="scanf"> -->
532 <!-- <item><ref id="snprintf" name="snprintf"> -->
533 <!-- <item><ref id="sprintf" name="sprintf"> -->
534 <!-- <item><ref id="sscanf" name="sscanf"> -->
535 <!-- <item><ref id="vfprintf" name="vfprintf"> -->
536 <!-- <item><ref id="vfscanf" name="vfscanf"> -->
537 <!-- <item><ref id="vprintf" name="vprintf"> -->
538 <!-- <item><ref id="vscanf" name="vscanf"> -->
539 <!-- <item><ref id="vsnprintf" name="vsnprintf"> -->
540 <!-- <item><ref id="vsprintf" name="vsprintf"> -->
541 <!-- <item><ref id="vsscanf" name="vsscanf"> -->
547 <sect1><tt/stdlib.h/<label id="stdlib.h"><p>
550 <item><ref id="_heapadd" name="_heapadd">
551 <item><ref id="_heapblocksize" name="_heapblocksize">
552 <item><ref id="_heapmaxavail" name="_heapmaxavail">
553 <item><ref id="_heapmemavail" name="_heapmemavail">
554 <item><ref id="_randomize" name="_randomize">
555 <item><ref id="_swap" name="_swap">
556 <item><ref id="abort" name="abort">
557 <item><ref id="abs" name="abs">
558 <item><ref id="atexit" name="atexit">
559 <item><ref id="atoi" name="atoi">
560 <item><ref id="atol" name="atol">
561 <item><ref id="bsearch" name="bsearch">
562 <item><ref id="calloc" name="calloc">
563 <item><ref id="div" name="div">
564 <item><ref id="exit" name="exit">
565 <item><ref id="free" name="free">
566 <item><ref id="getenv" name="getenv">
567 <item><ref id="itoa" name="itoa">
568 <item><ref id="labs" name="labs">
569 <item><ref id="ltoa" name="ltoa">
570 <item><ref id="malloc" name="malloc">
571 <item><ref id="perror" name="perror">
572 <!-- <item><ref id="posix_memalign" name="posix_memalign"> -->
573 <!-- <item><ref id="putenv" name="putenv"> -->
574 <item><ref id="qsort" name="qsort">
575 <item><ref id="rand" name="rand">
576 <item><ref id="realloc" name="realloc">
577 <item><ref id="srand" name="srand">
578 <!-- <item><ref id="system" name="system"> -->
579 <item><ref id="ultoa" name="ultoa">
580 <item><ref id="utoa" name="utoa">
586 <sect1><tt/string.h/<label id="string.h"><p>
589 <item><ref id="_stroserror" name="_stroserror">
590 <item><ref id="bzero" name="bzero">
591 <item><ref id="memchr" name="memchr">
592 <item><ref id="memcmp" name="memcmp">
593 <item><ref id="memcpy" name="memcpy">
594 <item><ref id="memmove" name="memmove">
595 <item><ref id="memset" name="memset">
596 <item><ref id="strcasecmp" name="strcasecmp">
597 <item><ref id="strcat" name="strcat">
598 <item><ref id="strchr" name="strchr">
599 <item><ref id="strcmp" name="strcmp">
600 <item><ref id="strcoll" name="strcoll">
601 <item><ref id="strcpy" name="strcpy">
602 <item><ref id="strcspn" name="strcspn">
603 <item><ref id="strdup" name="strdup">
604 <item><ref id="strerror" name="strerror">
605 <item><ref id="stricmp" name="stricmp">
606 <item><ref id="strlen" name="strlen">
607 <item><ref id="strlower" name="strlower">
608 <item><ref id="strlwr" name="strlwr">
609 <item><ref id="strncat" name="strncat">
610 <item><ref id="strncmp" name="strncmp">
611 <item><ref id="strncpy" name="strncpy">
612 <item><ref id="strrchr" name="strrchr">
613 <item><ref id="strspn" name="strspn">
614 <item><ref id="strstr" name="strstr">
615 <item><ref id="strtok" name="strtok">
616 <item><ref id="strxfrm" name="strxfrm">
617 <item><ref id="strupper" name="strupper">
618 <item><ref id="strupr" name="strupr">
624 <sect1><tt/tgi.h/<label id="tgi.h"><p>
627 <item><ref id="tgi_arc" name="tgi_arc">
628 <item><ref id="tgi_bar" name="tgi_bar">
629 <item><ref id="tgi_circle" name="tgi_circle">
630 <item><ref id="tgi_clear" name="tgi_clear">
631 <item><ref id="tgi_done" name="tgi_done">
632 <item><ref id="tgi_ellipse" name="tgi_ellipse">
633 <item><ref id="tgi_free_vectorfont" name="tgi_free_vectorfont">
634 <item><ref id="tgi_getaspectratio" name="tgi_getaspectratio">
635 <item><ref id="tgi_getcolor" name="tgi_getcolor">
636 <item><ref id="tgi_getcolorcount" name="tgi_getcolorcount">
637 <item><ref id="tgi_getdefpalette" name="tgi_getdefpalette">
638 <item><ref id="tgi_geterror" name="tgi_geterror">
639 <item><ref id="tgi_geterrormsg" name="tgi_geterrormsg">
640 <item><ref id="tgi_getmaxcolor" name="tgi_getmaxcolor">
641 <item><ref id="tgi_getmaxx" name="tgi_getmaxx">
642 <item><ref id="tgi_getmaxy" name="tgi_getmaxy">
643 <item><ref id="tgi_getpagecount" name="tgi_getpagecount">
644 <item><ref id="tgi_getpalette" name="tgi_getpalette">
645 <item><ref id="tgi_getpixel" name="tgi_getpixel">
646 <item><ref id="tgi_gettextheight" name="tgi_gettextheight">
647 <item><ref id="tgi_gettextwidth" name="tgi_gettextwidth">
648 <item><ref id="tgi_getxres" name="tgi_getxres">
649 <item><ref id="tgi_getyres" name="tgi_getyres">
650 <item><ref id="tgi_gotoxy" name="tgi_gotoxy">
651 <item><ref id="tgi_init" name="tgi_init">
652 <item><ref id="tgi_install" name="tgi_install">
653 <item><ref id="tgi_install_vectorfont" name="tgi_install_vectorfont">
654 <item><ref id="tgi_ioctl" name="tgi_ioctl">
655 <item><ref id="tgi_line" name="tgi_line">
656 <item><ref id="tgi_lineto" name="tgi_lineto">
657 <item><ref id="tgi_load_driver" name="tgi_load_driver">
658 <item><ref id="tgi_load_vectorfont" name="tgi_load_vectorfont">
659 <item><ref id="tgi_outtext" name="tgi_outtext">
660 <item><ref id="tgi_outtextxy" name="tgi_outtextxy">
661 <item><ref id="tgi_setaspectratio" name="tgi_setaspectratio">
662 <item><ref id="tgi_setcolor" name="tgi_setcolor">
663 <item><ref id="tgi_setdrawpage" name="tgi_setdrawpage">
664 <item><ref id="tgi_setpalette" name="tgi_setpalette">
665 <item><ref id="tgi_setpixel" name="tgi_setpixel">
666 <item><ref id="tgi_setviewpage" name="tgi_setviewpage">
667 <item><ref id="tgi_settextscale" name="tgi_settextscale">
668 <item><ref id="tgi_settextstyle" name="tgi_settextstyle">
669 <item><ref id="tgi_uninstall" name="tgi_uninstall">
670 <item><ref id="tgi_unload" name="tgi_unload">
673 <sect1><tt/time.h/<label id="time.h"><p>
676 <!-- <item><ref id="_systime" name="_systime"> -->
677 <!-- <item><ref id="asctime" name="asctime"> -->
678 <item><ref id="clock" name="clock">
679 <!-- <item><ref id="ctime" name="ctime"> -->
680 <!-- <item><ref id="gmtime" name="gmtime"> -->
681 <!-- <item><ref id="localtime" name="localtime"> -->
682 <!-- <item><ref id="mktime" name="mktime"> -->
683 <!-- <item><ref id="strftime" name="strftime"> -->
684 <item><ref id="time" name="time">
690 <sect1><tt/unistd.h/<label id="unistd.h"><p>
693 <!-- <item><ref id="chdir" name="chdir"> -->
694 <item><ref id="exec" name="exec">
695 <!-- <item><ref id="getcwd" name="getcwd"> -->
696 <item><ref id="getopt" name="getopt">
697 <!-- <item><ref id="lseek" name="lseek"> -->
698 <!-- <item><ref id="mkdir" name="mkdir"> -->
699 <!-- <item><ref id="read" name="read"> -->
700 <!-- <item><ref id="rmdir" name="rmdir"> -->
701 <item><ref id="sleep" name="sleep">
702 <item><ref id="unlink" name="unlink">
703 <!-- <item><ref id="write" name="write"> -->
709 <sect1><tt/vic20.h/<label id="vic20.h"><p>
714 <sect1><tt/zlib.h/<label id="zlib.h"><p>
717 <!-- <item><ref id="adler32" name="adler32"> -->
718 <!-- <item><ref id="crc32" name="crc32"> -->
719 <!-- <item><ref id="inflatemem" name="inflatemem"> -->
720 <!-- <item><ref id="uncompress" name="uncompress"> -->
726 <sect>Alphabetical function reference<p>
728 <sect1>_DE_ISDIR<label id="_DE_ISDIR"><p>
732 <tag/Function/Determine if a directory entry specifies a directory.
733 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
734 <tag/Declaration/<tt/int _DE_ISDIR(unsigned char type);/
735 <tag/Description/The function is called with the type of a directory entry
736 taken from a <tt/struct dirent/ and returns true if the entry designates
740 <item>The function is actually a macro.
742 <tag/Availability/cc65
744 <ref id="_DE_ISLBL" name="_DE_ISLBL">,
745 <ref id="_DE_ISLNK" name="_DE_ISLNK">,
746 <ref id="_DE_ISREG" name="_DE_ISREG">
752 <sect1>_DE_ISLBL<label id="_DE_ISLBL"><p>
756 <tag/Function/Determine if a directory entry specifies a disk label.
757 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
758 <tag/Declaration/<tt/int _DE_ISLBL(unsigned char type);/
759 <tag/Description/The function is called with the type of a directory entry
760 taken from a <tt/struct dirent/ and returns true if the entry designates
764 <item>The function is actually a macro.
766 <tag/Availability/cc65
768 <ref id="_DE_ISDIR" name="_DE_ISDIR">,
769 <ref id="_DE_ISLNK" name="_DE_ISLNK">,
770 <ref id="_DE_ISREG" name="_DE_ISREG">
776 <sect1>_DE_ISLNK<label id="_DE_ISLNK"><p>
780 <tag/Function/Determine if a directory entry specifies a link.
781 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
782 <tag/Declaration/<tt/int _DE_ISLNK(unsigned char type);/
783 <tag/Description/The function is called with the type of a directory entry
784 taken from a <tt/struct dirent/ and returns true if the entry designates
788 <item>The function is actually a macro.
790 <tag/Availability/cc65
792 <ref id="_DE_ISDIR" name="_DE_ISDIR">,
793 <ref id="_DE_ISLBL" name="_DE_ISLBL">,
794 <ref id="_DE_ISREG" name="_DE_ISREG">
800 <sect1>_DE_ISREG<label id="_DE_ISREG"><p>
804 <tag/Function/Determine if a directory entry specifies a regular file.
805 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
806 <tag/Declaration/<tt/int _DE_ISREG(unsigned char type);/
807 <tag/Description/The function is called with the type of a directory entry
808 taken from a <tt/struct dirent/ and returns true if the entry designates
812 <item>The function is actually a macro.
813 <item>A "regular file" means anything with data in it. This might still mean
814 that special processing is needed, when accessing the file. Relative files of
815 the CBM systems are classified as being "regular" files, for example.
817 <tag/Availability/cc65
819 <ref id="_DE_ISDIR" name="_DE_ISDIR">,
820 <ref id="_DE_ISLBL" name="_DE_ISLBL">,
821 <ref id="_DE_ISLNK" name="_DE_ISLNK">
827 <sect1>_heapadd<label id="_heapadd"><p>
831 <tag/Function/Add a block to the heap.
832 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
833 <tag/Declaration/<tt/void __fastcall__ _heapadd (void* mem, size_t size);/
834 <tag/Description/The function adds a block of raw memory to the heap.
837 <item>The minimum blocksize that can be added is 6 bytes; the function will
838 ignore smaller blocks.
840 <tag/Availability/cc65
842 <ref id="_heapblocksize" name="_heapblocksize">,
843 <ref id="_heapmaxavail" name="_heapmaxavail">,
844 <ref id="_heapmemavail" name="_heapmemavail">,
845 <ref id="calloc" name="calloc">,
846 <ref id="free" name="free">,
847 <ref id="malloc" name="malloc">,
848 <ref id="realloc" name="realloc">
854 <sect1>_heapblocksize<label id="_heapblocksize"><p>
858 <tag/Function/Return the size of an allocated block.
859 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
860 <tag/Declaration/<tt/size_t __fastcall__ _heapblocksize (const void* block);/
861 <tag/Description/The function returns the size of a block that must have
862 previously been allocated by <tt/<ref id="malloc" name="malloc">/, <tt/<ref
863 id="calloc" name="calloc">/ or <tt/<ref id="realloc" name="realloc">/.
866 <item>Passing a pointer to a block that was is not the result of one of the
867 allocation functions, or that has been free'd will give unpredicable results.
869 <tag/Availability/cc65
871 <ref id="_heapadd" name="_heapadd">,
872 <ref id="_heapmaxavail" name="_heapmaxavail">,
873 <ref id="_heapmemavail" name="_heapmemavail">,
874 <ref id="calloc" name="calloc">,
875 <ref id="free" name="free">,
876 <ref id="malloc" name="malloc">,
877 <ref id="realloc" name="realloc">
883 <sect1>_heapmaxavail<label id="_heapmaxavail"><p>
887 <tag/Function/Return the largest block that is available on the heap.
888 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
889 <tag/Declaration/<tt/size_t _heapmaxavail (void);/
890 <tag/Description/The function returns the size of the largest block that may
891 be allocated from the heap using <tt/<ref id="malloc" name="malloc">/.
892 <tag/Availability/cc65
894 <ref id="_heapadd" name="_heapadd">,
895 <ref id="_heapblocksize" name="_heapblocksize">,
896 <ref id="_heapmemavail" name="_heapmemavail">,
897 <ref id="calloc" name="calloc">,
898 <ref id="free" name="free">,
899 <ref id="malloc" name="malloc">,
900 <ref id="realloc" name="realloc">
906 <sect1>_heapmemavail<label id="_heapmemavail"><p>
910 <tag/Function/Return the total available space on the heap.
911 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
912 <tag/Declaration/<tt/size_t __fastcall__ _heapmemavail (void);/
913 <tag/Description/The function returns the total number of bytes available on
917 <item>This function is of less use than usually assumed, since the returned
918 heap space may be available but not in one block. So even if this function
919 says that several times more heap space is available than needed, <ref
920 id="malloc" name="malloc"> may still return <tt/NULL/.
922 <tag/Availability/cc65
924 <ref id="_heapadd" name="_heapadd">,
925 <ref id="_heapblocksize" name="_heapblocksize">,
926 <ref id="_heapmaxavail" name="_heapmaxavail">,
927 <ref id="calloc" name="calloc">,
928 <ref id="free" name="free">,
929 <ref id="malloc" name="malloc">,
930 <ref id="realloc" name="realloc">
936 <sect1>_poserror<label id="_poserror"><p>
940 <tag/Function/Print an error message for the error in <tt/_oserror/.
941 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
942 <tag/Declaration/<tt/void __fastcall__ _poserror (const char* msg);/
943 <tag/Description/<tt/_poserror/ prints an error message to <tt/stderr/. If
944 <tt/msg/ is not <tt/NULL/ and not an empty string, it is printed followed by
945 a colon and a blank. Then the error message for the current contents of
946 <tt/_oserror/ are printed followed by a newline. The message output is the
947 same as returned by <tt/<ref id="_stroserror" name="_stroserror">/ with an
948 argument of <tt/_oserror/.
951 <item>Since operating system specific error code are - you guessed it -
952 operating system specific, the value in <tt/_oserror/ and the message that is
953 printed depends on the cc65 target.
954 <item>The function is only available as fastcall function, so it may only
955 be used in presence of a prototype.
957 <tag/Availability/cc65
959 <ref id="_stroserror" name="_stroserror">,
960 <ref id="perror" name="perror">
966 <sect1>_randomize<label id="_randomize"><p>
970 <tag/Function/Initialize the pseudo random number generator.
971 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
972 <tag/Declaration/<tt/void _randomize (void);/
973 <tag/Description/The function initializes the random number generator with
974 a seed derived from fast changing hardware events, so the seed itself can be
975 considered random to a certain degree.
976 <tag/Limits/<itemize>
977 <item>The randomness of the seed depends on the machine hardware.
979 <tag/Availability/cc65
981 <ref id="rand" name="rand">,
982 <ref id="srand" name="srand">
988 <sect1>_stroserror<label id="_stroserror"><p>
992 <tag/Function/Return a string describing an OS specific error code.
993 <tag/Header/<tt/<ref id="string.h" name="string.h">/
994 <tag/Declaration/<tt/const char* __fastcall__ _stroserror (unsigned char errcode);/
995 <tag/Description/<tt/_stroserror/ will return a string describing the given
996 operating system specific error code.
997 <tag/Limits/<itemize>
998 <item>Since operating system specific error code are - you guessed it -
999 operating system specific, the parameter and the string returned depend on the
1001 <item>The function is only available as fastcall function, so it may only be
1002 used in presence of a prototype.
1004 <tag/Availability/cc65
1006 <ref id="strerror" name="strerror">
1012 <sect1>_swap<label id="_swap"><p>
1016 <tag/Function/Swap the contents of memory areas.
1017 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1018 <tag/Declaration/<tt/void __fastcall__ _swap (void* p, void* q, size_t size);/
1019 <tag/Description/<tt/_swap/ will swap (exchange) the contents of the two memory
1020 areas pointed to by <tt/p/ and <tt/q/. Both memory areas are assumed to be
1021 <tt/size/ bytes in size.
1022 <tag/Limits/<itemize>
1023 <item>The memory areas may not overlap, otherwise the results are undefined.
1024 <item>The function is only available as fastcall function, so it may only be
1025 used in presence of a prototype.
1027 <tag/Availability/cc65
1029 <ref id="memcpy" name="memcpy">,
1030 <ref id="memmove" name="memmove">
1036 <sect1>_sys<label id="_sys"><p>
1040 <tag/Function/Call a subroutine passing register values.
1041 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
1042 <tag/Declaration/<tt/void __fastcall__ _sys (struct regs* r);/
1043 <tag/Description/The function will call the subroutine at the address
1044 specified in the <tt/pc/ member of the passed <tt/regs/ structure. All
1045 registers and the CPU flags are set to the values given in the <tt/regs/
1046 structure. On return from the subroutine, the new values of the registers and
1047 flags are stored back overwriting the old values.
1048 <tag/Limits/<itemize>
1049 <item>Bits 4 and 5 of the flags value in the <tt/regs/ structure are ignored
1050 when calling the subroutine (they are unchanged from their current values).
1051 <item>The function is only available as fastcall function, so it may only be
1052 used in presence of a prototype.
1054 <tag/Availability/cc65
1060 <sect1>BRK<label id="BRK"><p>
1064 <tag/Function/Insert a 6502 BRK instrunction into the code.
1065 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
1066 <tag/Declaration/<tt/void BRK (void);/
1067 <tag/Description/The function will insert a 6502 BRK instruction into the code
1068 which may be used to trigger a debugger.
1069 <tag/Limits/<itemize>
1070 <item>The function is actually a macro.
1071 <item>The inserted instruction may lead to unexpected results if no debugger
1074 <tag/Availability/cc65
1076 <ref id="CLI" name="CLI">,
1077 <ref id="SEI" name="SEI">
1083 <sect1>CLI<label id="CLI"><p>
1087 <tag/Function/Insert a 6502 CLI instrunction into the code.
1088 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
1089 <tag/Declaration/<tt/void CLI (void);/
1090 <tag/Description/The function will insert a 6502 CLI instruction into the code,
1091 so interrupts are enabled. Enabling interrupts has no effects if they are
1092 already enabled (the default).
1093 <tag/Limits/<itemize>
1094 <item>The function is actually a macro.
1095 <item>Disabling interrupts may lead to unexpected results.
1097 <tag/Availability/cc65
1099 <ref id="BRK" name="BRK">,
1100 <ref id="SEI" name="SEI">
1106 <sect1>PEEK<label id="PEEK"><p>
1110 <tag/Function/Read a byte from memory.
1111 <tag/Header/<tt/<ref id="peekpoke.h" name="peekpoke.h">/
1112 <tag/Declaration/<tt/unsigned char PEEK (unsigned addr);/
1113 <tag/Description/The function will read the absolute memory given by <tt/addr/
1114 and return the value read.
1115 <tag/Limits/<itemize>
1116 <item>The function is actually a macro.
1117 <item>This function depends highly on the platform and environment.
1119 <tag/Availability/cc65
1121 <ref id="PEEKW" name="PEEKW">,
1122 <ref id="POKE" name="POKE">
1128 <sect1>PEEKW<label id="PEEKW"><p>
1132 <tag/Function/Read a word (two bytes) from memory.
1133 <tag/Header/<tt/<ref id="peekpoke.h" name="peekpoke.h">/
1134 <tag/Declaration/<tt/unsigned PEEKW (unsigned addr);/
1135 <tag/Description/The function will read the absolute memory given by <tt/addr/
1136 and return the value read. The byte read from the higher address is the high
1137 byte of the return value.
1138 <tag/Limits/<itemize>
1139 <item>The function is actually a macro.
1140 <item>This function depends highly on the platform and environment.
1141 <item>The order in which the two bytes are read is unspecified and may
1142 depend of the address expression used.
1144 <tag/Availability/cc65
1146 <ref id="PEEK" name="PEEK">,
1147 <ref id="POKE" name="POKE">
1153 <sect1>POKE<label id="POKE"><p>
1157 <tag/Function/Write a byte to memory.
1158 <tag/Header/<tt/<ref id="peekpoke.h" name="peekpoke.h">/
1159 <tag/Declaration/<tt/void POKE (unsigned addr, unsigned char val);/
1160 <tag/Description/The function writes the value <tt/val/ to the absolute
1161 memory address given by <tt/addr/.
1162 <tag/Limits/<itemize>
1163 <item>The function is actually a macro.
1164 <item>This function depends highly on the platform and environment.
1165 <item>Careless use will cause the program to act strange or may crash the
1168 <tag/Availability/cc65
1170 <ref id="PEEK" name="PEEK">,
1171 <ref id="POKEW" name="POKEW">
1177 <sect1>POKEW<label id="POKEW"><p>
1181 <tag/Function/Write a word (two bytes) to memory.
1182 <tag/Header/<tt/<ref id="peekpoke.h" name="peekpoke.h">/
1183 <tag/Declaration/<tt/void POKEW (unsigned addr, unsigned val);/
1184 <tag/Description/The function writes the value <tt/val/ to the absolute
1185 memory address given by <tt/addr/. The low byte of <tt/val/ is written to
1186 the <tt/addr/, the high byte is written to <tt/addr+1/.
1187 <tag/Limits/<itemize>
1188 <item>The function is actually a macro.
1189 <item>This function depends highly on the platform and environment.
1190 <item>Careless use will cause the program to act strange or may crash the
1192 <item>The order in which the two bytes are written is unspecified and may
1193 depend of the address expression used.
1195 <tag/Availability/cc65
1197 <ref id="PEEK" name="PEEK">,
1198 <ref id="POKE" name="POKE">
1204 <sect1>SEI<label id="SEI"><p>
1208 <tag/Function/Insert a 6502 SEI instrunction into the code.
1209 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
1210 <tag/Declaration/<tt/void SEI (void);/
1211 <tag/Description/The function will insert a 6502 SEI instruction into the code,
1212 so interrupts are disabled. Note that non maskable interrupts cannot be
1214 <tag/Limits/<itemize>
1215 <item>The function is actually a macro.
1216 <item>Disabling interrupts may lead to unexpected results.
1218 <tag/Availability/cc65
1220 <ref id="BRK" name="BRK">,
1221 <ref id="CLI" name="CLI">
1227 <sect1>abort<label id="abort"><p>
1231 <tag/Function/Terminates a program abnormally.
1232 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1233 <tag/Declaration/<tt/void abort (void);/
1234 <tag/Description/<tt/abort/ raises <tt/SIGABRT/, writes a termination message
1235 on stderr, then terminates the program with an exit code of 3.
1236 <tag/Availability/ISO 9899
1238 <ref id="assert" name="assert">,
1239 <ref id="exit" name="exit">,
1240 <ref id="raise" name="raise">
1246 <sect1>abs<label id="abs"><p>
1250 <tag/Function/Returns the absolute value of an integer.
1251 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1252 <tag/Declaration/<tt/int __fastcall__ abs (int v);/
1253 <tag/Description/<tt/abs/ returns the absolute value of the argument passed to
1255 <tag/Limits/<itemize>
1256 <item>The return value is undefined if <tt/INT_MIN/ is passed to the function.
1257 <item>The function is only available as fastcall function, so it may only be
1258 used in presence of a prototype.
1260 <tag/Availability/ISO 9899
1262 <ref id="labs" name="labs">
1268 <sect1>assert<label id="assert"><p>
1272 <tag/Function/Test a condition and possibly abort.
1273 <tag/Header/<tt/<ref id="assert.h" name="assert.h">/
1274 <tag/Declaration/<tt/void assert (int cond);/
1275 <tag/Description/<tt/assert/ is a macro that expands to a <tt/id/
1276 statement. If the condition evaluates t zero (false), assert prints a message
1277 on stderr and aborts the program.
1278 <tag/Limits/<itemize>
1279 <item>The function is actually a macro.
1281 <tag/Availability/ISO 9899
1283 <ref id="abort" name="abort">,
1284 <ref id="exit" name="exit">
1290 <sect1>atexit<label id="atexit"><p>
1294 <tag/Function/Register an exit function.
1295 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1296 <tag/Declaration/<tt/int __fastcall__ atexit (void (*exitfunc) (void));/
1297 <tag/Description/<tt/atexit/ registers the function pointed to by
1298 <tt/exitfunc/ as an exit function. Exit functions are called when the program
1299 terminates, they are called in LIFO order (the last function registered is
1300 called first). <tt/atexit/ returns zero on success and a nonzero value on
1302 <tag/Limits/<itemize>
1303 <item>A maximum of 5 exit functions can be registered.
1304 <item>There is no way to unregister an exit function.
1305 <item>The function is only available as fastcall function, so it may only be
1306 used in presence of a prototype.
1308 <tag/Availability/ISO 9899
1310 <ref id="abort" name="abort">,
1311 <ref id="exit" name="exit">
1317 <sect1>atmos_load<label id="atmos_load"><p>
1321 <tag/Function/Load Atmos tape.
1322 <tag/Header/<tt/<ref id="atmos.h" name="atmos.h">/
1323 <tag/Declaration/<tt/void __fastcall__ atmos_load(const char* name);/
1324 <tag/Description/<tt/atmos_load/ reads a memory block from tape.
1325 <tag/Availability/cc65
1327 <ref id="atmos_save" name="atmos_save">
1333 <sect1>atmos_save<label id="atmos_save"><p>
1337 <tag/Function/Save Atmos tape.
1338 <tag/Header/<tt/<ref id="atmos.h" name="atmos.h">/
1339 <tag/Declaration/<tt/void __fastcall__ atmos_save(const char* name, const void* start, const void* end);/
1340 <tag/Description/<tt/atmos_save/ writes a memory block to tape.
1341 <tag/Availability/cc65
1343 <ref id="atmos_load" name="atmos_load">
1345 atmos_save("hires", 0xa000, 0xc000);
1351 <sect1>atoi<label id="atoi"><p>
1355 <tag/Function/Convert a string to an integer.
1356 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1357 <tag/Declaration/<tt/int __fastcall__ atoi (const char* s);/
1358 <tag/Description/<tt/atoi/ converts the given string into an integer.
1359 Conversion stops as soon as any invalid character is encountered.
1360 <tag/Limits/<itemize>
1361 <item>There is no way to detect any conversion errors.
1362 <item>The function does not check for an numerical overflow when converting.
1363 <item>The function is only available as fastcall function, so it may only be
1364 used in presence of a prototype.
1366 <tag/Availability/ISO 9899
1368 <ref id="atol" name="atol">,
1369 <ref id="itoa" name="itoa">,
1370 <ref id="ltoa" name="ltoa">,
1371 <ref id="ultoa" name="ultoa">,
1372 <ref id="utoa" name="utoa">
1378 <sect1>atol<label id="atol"><p>
1382 <tag/Function/Convert a string to a long integer.
1383 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1384 <tag/Declaration/<tt/long __fastcall__ atol (const char* s);/
1385 <tag/Description/<tt/atol/ converts the given string into a long integer.
1386 Conversion stops as soon as any invalid character is encountered.
1387 <tag/Limits/<itemize>
1388 <item>There is no way to detect any conversion errors.
1389 <item>The function does not check for an numerical overflow when converting.
1390 <item>The function is only available as fastcall function, so it may only be
1391 used in presence of a prototype.
1393 <tag/Availability/ISO 9899
1395 <ref id="atoi" name="atoi">,
1396 <ref id="itoa" name="itoa">,
1397 <ref id="ltoa" name="ltoa">,
1398 <ref id="ultoa" name="ultoa">,
1399 <ref id="utoa" name="utoa">
1405 <sect1>bgcolor<label id="bgcolor"><p>
1409 <tag/Function/Set the background text color.
1410 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
1411 <tag/Declaration/<tt/unsigned char __fastcall__ bgcolor (unsigned char color);/
1412 <tag/Description/The function will set a new background color and return the
1413 old (current) one. The background color is valid for the whole text output
1414 area of the screen, not just for new text.
1415 <tag/Limits/<itemize>
1416 <item>Background colors are system dependent. The function may have no effect
1417 on systems where the background color cannot be changed.
1418 <item>The function is only available as fastcall function, so it may only be
1419 used in presence of a prototype.
1421 <tag/Availability/cc65
1423 <ref id="bordercolor" name="bordercolor">,
1424 <ref id="textcolor" name="textcolor">
1430 <sect1>bordercolor<label id="bordercolor"><p>
1434 <tag/Function/Set the border (frame) color.
1435 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
1436 <tag/Declaration/<tt/unsigned char __fastcall__ bordercolor (unsigned char color);/
1437 <tag/Description/The function will set a new border color. It returns the old
1438 (current) border color.
1439 <tag/Limits/<itemize>
1440 <item>Border colors are system dependent. The function may have no effect
1441 on systems where the border color cannot be changed.
1442 <item>The function is only available as fastcall function, so it may only
1443 be used in presence of a prototype.
1445 <tag/Availability/cc65
1447 <ref id="bgcolor" name="bgcolor">,
1448 <ref id="textcolor" name="textcolor">
1454 <sect1>bsearch<label id="bsearch"><p>
1458 <tag/Function/Do a binary search in a sorted array.
1459 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1460 <tag/Declaration/<tt/void* __fastcall__ bsearch (const void* key,
1461 const void* base, size_t n, size_t size,
1462 int (*cmp) (const void*, const void*));/
1463 <tag/Description/<tt/bsearch/ searches a sorted array for a member that
1464 matches the one pointed to by <tt/key/. <tt/base/ is the address of the array,
1465 <tt/n/ is the number of elements, <tt/size/ the size of an element and <tt/cmp/
1466 the function used to compare the members against the key. The function returns
1467 a pointer to the member found, or <tt/NULL/ if there was no match.
1470 <item>The contents of the array must be sorted in ascending order according to
1471 the compare function given.
1472 <item>If there are multiple members that match the key, the function will
1473 return one of the members.
1474 <item>The function is only available as fastcall function, so it may only
1475 be used in presence of a prototype.
1477 <tag/Availability/ISO 9899
1479 <ref id="qsort" name="qsort">
1485 <sect1>bzero<label id="bzero"><p>
1489 <tag/Function/Fill a memory area with zeroes.
1490 <tag/Header/<tt/<ref id="string.h" name="string.h">/
1491 <tag/Declaration/<tt/void __fastcall__ bzero (void* p, size_t count);/
1492 <tag/Description/<tt/bzero/ fills the memory area pointed to by <tt/p/ with
1496 <item>The function is non standard and therefore only available in non ANSI
1497 mode. You should use <tt/<ref id="memset" name="memset">/ instead.
1498 <item>The function is only available as fastcall function, so it may only
1499 be used in presence of a prototype.
1501 <tag/Availability/cc65
1503 <ref id="_swap" name="_swap">,
1504 <ref id="memcpy" name="memcpy">,
1505 <ref id="memmove" name="memmove">,
1506 <ref id="memset" name="memset">,
1512 <sect1>c64mode<label id="c64mode"><p>
1516 <tag/Function/Switch the C128 into C64 compatible mode.
1517 <tag/Header/<tt/<ref id="c128.h" name="c128.h">/
1518 <tag/Declaration/<tt/void c64mode (void);/
1519 <tag/Description/The function will cause the machine to reboot into C64 mode.
1520 <tag/Limits/<itemize>
1521 <item>The function is specific to the C128.
1522 <item>The function will not return to the caller.
1524 <tag/Availability/C128
1530 <sect1>calloc<label id="calloc"><p>
1534 <tag/Function/Allocate and clear memory.
1535 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
1536 <tag/Declaration/<tt/void* __fastcall__ calloc (size_t n, size_t size);/
1537 <tag/Description/<tt/calloc/ allocates memory for an array of <tt/n/ elements
1538 of size <tt/size/, clears the whole block with binary zeroes and returns a
1539 pointer to it. On error (not enough memory available), <tt/calloc/ returns
1543 <item>Clearing the memory may not have the expected effect on all platforms:
1544 pointers in the block may not be <tt/NULL/ and floating point variables may
1545 not be zero (0.0). In other words: The "clearing" effect of this function
1546 should be used with care for portable programs.
1547 <item>The function is only available as fastcall function, so it may only
1548 be used in presence of a prototype.
1550 <tag/Availability/ISO 9899
1552 <ref id="_heapadd" name="_heapadd">,
1553 <ref id="_heapblocksize" name="_heapblocksize">,
1554 <ref id="_heapmaxavail" name="_heapmaxavail">,
1555 <ref id="_heapmemavail" name="_heapmemavail">,
1556 <ref id="free" name="free">,
1557 <ref id="malloc" name="malloc">,
1558 <ref id="realloc" name="realloc">
1564 <sect1>cbm_k_acptr<label id="cbm_k_acptr"><p>
1568 <tag/Function/Input byte from serial bus
1569 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1570 <tag/Declaration/<tt/unsigned char cbm_k_acptr (void);/
1571 <tag/Description/The function returns a byte of data, which it
1572 gets from the current TALKer on the serial bus.
1573 In order to receive the data, the device must have previously been
1574 sent a command to TALK and a secondary address if it needs one.
1575 <tag/Limits/<itemize>
1578 <tag/Availability/cc65
1580 <ref id="cbm_k_talk" name="cbm_k_talk">,
1586 <sect1>cbm_k_basin<label id="cbm_k_basin"><p>
1590 <tag/Function/Input a Character from the Current Device
1591 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1592 <tag/Declaration/<tt/unsigned char cbm_k_basin (void);/
1593 <tag/Description/The function returns a character from the current input device.
1594 Device must first have been OPENed and then designated as the input channel by the CHKIN routine.
1595 When this function is called, the next byte of data available from the device is returned.
1596 Exception is the routine for the keyboard device (which is the default input device).
1597 <tag/Limits/<itemize>
1600 <tag/Availability/cc65
1602 <ref id="cbm_k_open" name="cbm_k_open">,
1603 <ref id="cbm_k_chkin" name="cbm_k_chkin">
1609 <sect1>cbm_k_bsout<label id="cbm_k_bsout"><p>
1613 <tag/Function/Output a byte
1614 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1615 <tag/Declaration/<tt/void __fastcall__ cbm_k_bsout (unsigned char C);/
1616 <tag/Description/Function sends the character to the current output device.
1617 Unless a device has been OPENed and designated as the
1618 current output channel using the CHKOUT routine, the character is
1619 printed to the screen, which is the default output device. If the
1620 cassette is the current device, outputting a byte will only add it to
1621 the buffer. No actual transmission of data will occur until the
1622 192-byte buffer is full.
1623 <tag/Limits/<itemize>
1624 <item>The function is only available as fastcall function, so it may
1625 only be used in presence of a prototype.
1627 <tag/Availability/cc65
1629 <ref id="cbm_k_open" name="cbm_k_open">,
1630 <ref id="cbm_k_chkin" name="cbm_k_chkout">
1636 <sect1>cbm_k_chkin<label id="cbm_k_chkin"><p>
1640 <tag/Function/Designate a Logical File As the Current Input Channel
1641 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1642 <tag/Declaration/<tt/unsigned char __fastcall__ cbm_k_chkin (unsigned char FN);/
1643 <tag/Description/If you wish to
1644 get data from any device other than the keyboard, this function must be
1645 called after OPENing the device, before you can get a data byte with
1646 the cbm_k_basin or cbm_k_getin routine. When called, the routine will designate
1647 the logical file whose file number was supplied as the
1648 current file, its device as the current device, and its secondary
1649 address as the current secondary address. If the device on the
1650 channel is a serial device, which requires a TALK command and
1651 sometimes a secondary address, function will send them over the
1653 <tag/Limits/<itemize>
1654 <item>The function is only available as fastcall function, so it may
1655 only be used in presence of a prototype.
1657 <tag/Availability/cc65
1659 <ref id="cbm_k_open" name="cbm_k_open">,
1660 <ref id="cbm_k_basin" name="cbm_k_basin">,
1661 <ref id="cbm_k_getin" name="cbm_k_getin">
1667 <sect1>cbm_k_ciout<label id="cbm_k_ciout"><p>
1671 <tag/Function/Transmit a byte over the serial bus
1672 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1673 <tag/Declaration/<tt/void __fastcall__ cbm_k_ciout (unsigned char C);/
1674 <tag/Description/Purpose of this function is to send a byte of data over
1675 the serial bus. In order for the data to be received, the serial
1676 device must have first been commanded to LISTEN and been given a
1677 secondary address if necessary. This routine always buffers the
1678 current character, and defers sending it until the next byte is
1679 buffered. When the UNLISTEN command is sent, the last byte will be
1680 sent with an End or Identify (EOI).
1681 <tag/Limits/<itemize>
1682 <item>The function is only available as fastcall function, so it may
1683 only be used in presence of a prototype.
1685 <tag/Availability/cc65
1687 <ref id="cbm_k_listen" name="cbm_k_listen">,
1688 <ref id="cbm_k_unlsn" name="cbm_k_unlsn">
1694 <sect1>cbm_k_ckout<label id="cbm_k_ckout"><p>
1698 <tag/Function/Designate a Logical File As the Current Output Channel
1699 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1700 <tag/Declaration/<tt/unsigned char __fastcall__ cbm_k_ckout (unsigned char FN);/
1701 <tag/Description/If you wish to
1702 output data to any device other than the screen, this routine must be
1703 called after OPENing the device, and before you output a data byte
1704 with the cbm_k_bsout() function. When called, the function will designate the
1705 logical file whose file number was supplied as the current
1706 file, its device as the current device, and its secondary address as
1707 the current secondary address. If the device on the channel uses the
1708 serial bus, and therefore requires a LISTEN command and possibly a
1709 secondary address, this information will be sent on the bus.
1710 <tag/Limits/<itemize>
1711 <item>The function is only available as fastcall function, so it may
1712 only be used in presence of a prototype.
1714 <tag/Availability/cc65
1716 <ref id="cbm_k_bsout" name="cbm_k_bsout">,
1717 <ref id="cbm_k_listen" name="cbm_k_listen">
1723 <sect1>cbm_k_clall<label id="cbm_k_clall"><p>
1727 <tag/Function/Close All Logical I/O Files
1728 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1729 <tag/Declaration/<tt/void cbm_k_clall (void);/
1730 <tag/Description/It closes all
1731 open files, by resetting the index into open files to
1732 zero and restores the default I/O devices.
1733 <tag/Limits/<itemize>
1736 <tag/Availability/cc65
1738 <ref id="cbm_k_open" name="cbm_k_open">,
1739 <ref id="cbm_k_close" name="cbm_k_close">
1745 <sect1>cbm_k_close<label id="cbm_k_close"><p>
1749 <tag/Function/Close a Logical I/O File
1750 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1751 <tag/Declaration/<tt/void __fastcall__ cbm_k_close (unsigned char FN);/
1752 <tag/Description/It is used to
1753 close a logical file after all I/O operations involving that file have
1755 <tag/Limits/<itemize>
1756 <item>The function is only available as fastcall function, so it may
1757 only be used in presence of a prototype.
1759 <tag/Availability/cc65
1761 <ref id="cbm_k_open" name="cbm_k_open">,
1762 <ref id="cbm_k_clall" name="cbm_k_clall">
1768 <sect1>cbm_k_clrch<label id="cbm_k_clrch"><p>
1772 <tag/Function/Restore Current Input and Output Devices to the Default Devices
1773 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1774 <tag/Declaration/<tt/void cbm_k_clrch (void);/
1775 <tag/Description/It sets the
1776 current input device to the keyboard, and the current output device to
1777 the screen. Also, if the current input device was formerly a serial
1778 device, the routine sends it an UNTALK command on the serial bus, and
1779 if a serial device was formerly the current output device, the routine
1780 sends it an UNLISTEN command.
1781 <tag/Limits/<itemize>
1784 <tag/Availability/cc65
1786 <ref id="cbm_k_chkin" name="cbm_k_chkin">,
1787 <ref id="cbm_k_ckout" name="cbm_k_ckout">
1793 <sect1>cbm_k_getin<label id="cbm_k_getin"><p>
1797 <tag/Function/Get One Byte from the Input Device
1798 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1799 <tag/Declaration/<tt/unsigned char cbm_k_getin (void);/
1800 <tag/Description/Function gets a character from the current input device.
1801 <tag/Limits/<itemize>
1804 <tag/Availability/cc65
1806 <ref id="cbm_k_basin" name="cbm_k_basin">
1812 <sect1>cbm_k_iobase<label id="cbm_k_iobase"><p>
1816 <tag/Function/Return Base Address of Memory-Mapped I/O Devices
1817 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1818 <tag/Declaration/<tt/unsigned cbm_k_iobase (void);/
1819 <tag/Description/This function returns the address of
1820 the memory section where the memory mapped I/O devices are located. This
1821 address can then be used with an offset to access the memory mapped I/O
1822 devices in the Commodore 64. The offset is the number of locations from
1823 the beginning of the page on which the I/O register you want is located.
1824 This function exists to provide compatibility between the Commodore 64,
1825 VIC-20, and future models of the Commodore 64. If the I/O locations for
1826 a program are set by a call to this function, they should
1827 still remain compatible with future versions of the Commodore 64, the
1829 <tag/Limits/<itemize>
1832 <tag/Availability/cc65
1840 <sect1>cbm_k_listen<label id="cbm_k_listen"><p>
1844 <tag/Function/Command a device on the serial bus to LISTEN
1845 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1846 <tag/Declaration/<tt/void __fastcall__ cbm_k_listen (unsigned char dev);/
1847 <tag/Description/This function will command a device on the serial bus to
1848 receive data. The KERNAL routine will OR the supplied device number bit by bit
1849 to convert it to a listen address, then transmits this data as a command on
1850 the serial bus. The specified device will then go into listen mode, and
1851 be ready to accept information.
1852 <tag/Limits/<itemize>
1853 <item>The function is only available as fastcall function, so it may
1854 only be used in presence of a prototype.
1856 <tag/Availability/cc65
1858 <ref id="cbm_k_unlsn" name="cbm_k_unlsn">,
1864 <sect1>cbm_k_load<label id="cbm_k_load"><p>
1868 <tag/Function/Load RAM from a Device
1869 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1870 <tag/Declaration/<tt/unsigned int __fastcall__ cbm_k_load(unsigned char flag, unsigned addr);/
1871 <tag/Description/This function LOADs data bytes from any input device directly into the memory.
1872 It can also be used for a verify operation, comparing data from a device with the data already in
1873 memory, while leaving the data stored in RAM unchanged.
1874 The flag must be set to 0 for a LOAD operation, or 1 for a
1875 verify, If the input device is OPENed with a secondary address (SA) of 0
1876 the header information from the device is ignored. In this case, the starting address for the load must be supplied.
1877 If the device is addressed with a secondary address of 1, then the data is
1878 loaded into memory starting at the location specified by the header.
1879 Function returns the address of the highest RAM location loaded.
1880 Before this function can be called, the KERNAL SETLFS, and SETNAM
1881 routines must be called.
1882 <tag/Limits/<itemize>
1883 <item>The function is only available as fastcall function, so it may
1884 only be used in presence of a prototype.
1886 <tag/Availability/cc65
1888 <ref id="cbm_k_save" name="cbm_k_save">,
1889 <ref id="cbm_k_setlfs" name="cbm_k_setlfs">,
1890 <ref id="cbm_k_setnam" name="cbm_k_setnam">
1896 <sect1>cbm_k_open<label id="cbm_k_open"><p>
1900 <tag/Function/Open a Logical I/O File
1901 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1902 <tag/Declaration/<tt/unsigned char cbm_k_open (void);/
1903 <tag/Description/This function assigns a logical file to a device, so that it can be used for
1904 Input/Output operations. In order to specify the logical file number,
1905 the device number, and the secondary address if any, the cbm_k_setlfs() function must first be called.
1906 Likewise, in order to designate the filename, the cbm_k_setnam() function must be used first. After these two
1907 functions are called, cbm_k_open() is then called.
1908 <tag/Limits/<itemize>
1911 <tag/Availability/cc65
1913 <ref id="cbm_k_close" name="cbm_k_close">,
1914 <ref id="cbm_k_setlfs" name="cbm_k_setlfs">,
1915 <ref id="cbm_k_setnam" name="cbm_k_setnam">
1921 <sect1>cbm_k_readst<label id="cbm_k_readst"><p>
1925 <tag/Function/Read status word
1926 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1927 <tag/Declaration/<tt/unsigned char cbm_k_readst (void);/
1928 <tag/Description/This function returns the current status of the I/O devices. It is usually called after new communication to an I/O device and gives information about device status, or errors that have occurred during the I/O operation.
1929 <tag/Limits/<itemize>
1932 <tag/Availability/cc65
1940 <sect1>cbm_k_save<label id="cbm_k_save"><p>
1944 <tag/Function/Save RAM to a Device
1945 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1946 <tag/Declaration/<tt/unsigned char __fastcall__ cbm_k_save(unsigned int start, unsigned int end)/
1947 <tag/Description/This function saves a section of memory. The cbm_k_setlfs() and cbm_k_setnam() functions must be
1948 used before calling this function. However, a file name is not required to
1949 SAVE to device 1 (the Datassette(TM) recorder). Any attempt to save to
1950 other devices without using a file name results in an error. NOTE: Device 0 (the keyboard), device 2 (RS-232), and device 3 (the screen) cannot be SAVEd to. If the attempt is made, an error occurs, and the SAVE is stopped.
1951 <tag/Limits/<itemize>
1952 <item>The function is only available as fastcall function, so it may
1953 only be used in presence of a prototype.
1955 <tag/Availability/cc65
1957 <ref id="cbm_k_load" name="cbm_k_load">,
1958 <ref id="cbm_k_setlfs" name="cbm_k_setlfs">,
1959 <ref id="cbm_k_setnam" name="cbm_k_setnam">
1965 <sect1>cbm_k_setlfs<label id="cbm_k_setlfs"><p>
1969 <tag/Function/Set up a logical file
1970 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1971 <tag/Declaration/<tt/void __fastcall__ cbm_k_setlfs (unsigned char LFN, unsigned char DEV, unsigned char SA);/
1972 <tag/Description/This functions sets up the logical file by setting its number, device address,
1973 and secondary address.
1974 <tag/Limits/<itemize>
1975 <item>The function is only available as fastcall function, so it may
1976 only be used in presence of a prototype.
1978 <tag/Availability/cc65
1980 <ref id="cbm_k_setnam" name="cbm_k_setnam">
1986 <sect1>cbm_k_setnam<label id="cbm_k_setnam"><p>
1990 <tag/Function/Set Filename Parameters
1991 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
1992 <tag/Declaration/<tt/void __fastcall__ cbm_k_setnam (const char* Name);/
1993 <tag/Description/This function is used to set up the file name for the OPEN,
1994 SAVE, or LOAD operations.
1995 <tag/Limits/<itemize>
1996 <item>The function is only available as fastcall function, so it may
1997 only be used in presence of a prototype.
1999 <tag/Availability/cc65
2001 <ref id="cbm_k_open" name="cbm_k_open">,
2002 <ref id="cbm_k_load" name="cbm_k_load">,
2003 <ref id="cbm_k_save" name="cbm_k_save">
2009 <sect1>cbm_k_talk<label id="cbm_k_talk"><p>
2013 <tag/Function/Commands device to TALK
2014 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
2015 <tag/Declaration/<tt/void __fastcall__ cbm_k_talk (unsigned char dev);/
2016 <tag/Description/When called, it ORs the device number with the TALK code (64, $40) and sends it on the serial
2017 bus. This commands the device to TALK.
2018 <tag/Limits/<itemize>
2019 <item>The function is only available as fastcall function, so it may
2020 only be used in presence of a prototype.
2022 <tag/Availability/cc65
2024 <ref id="cbm_k_acptr" name="cbm_k_acptr">
2030 <sect1>cbm_k_unlsn<label id="cbm_k_unlsn"><p>
2034 <tag/Function/Send an UNLISTEN command
2035 <tag/Header/<tt/<ref id="cbm.h" name="cbm.h">/
2036 <tag/Declaration/<tt/void cbm_k_unlsn (void);/
2037 <tag/Description/This function commands all devices on the serial bus to
2038 stop receiving data from the host computer (i.e., UNLISTEN). Calling this
2039 function results in an UNLISTEN command being transmitted on the serial
2040 bus. Only devices previously commanded to LISTEN are affected. This
2041 function is normally used after the host computer is finished sending data
2042 to external devices. Sending the UNLISTEN commands the listening devices
2043 to get off the serial bus so it can be used for other purposes.
2044 <tag/Limits/<itemize>
2047 <tag/Availability/cc65
2049 <ref id="cbm_k_listen" name="cbm_k_listen">
2055 <sect1>cclear<label id="cclear"><p>
2059 <tag/Function/Clear part of a line (write a given number of spaces).
2060 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2061 <tag/Declaration/<tt/void __fastcall__ cclear (unsigned char length);/
2062 <tag/Description/The function clears part of a line by writing <tt/length/
2063 spaces in the current text color.
2064 <tag/Limits/<itemize>
2065 <item>The function is only available as fastcall function, so it may
2066 only be used in presence of a prototype.
2068 <tag/Availability/cc65
2070 <ref id="cclearxy" name="cclearxy">,
2071 <ref id="clrscr" name="clrscr">
2077 <sect1>cclearxy<label id="cclearxy"><p>
2081 <tag/Function/Clear part of a line (write a given number of spaces) starting
2082 at a specific screen position.
2083 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2084 <tag/Declaration/<tt/void __fastcall__ cclearxy (unsigned char x, unsigned char y, unsigned char length);/
2085 <tag/Description/The function moves the cursor to a specific position, and
2086 will then clear part of the line by writing <tt/length/ spaces in the current
2088 <tag/Limits/<itemize>
2089 <item>The function is only available as fastcall function, so it may
2090 only be used in presence of a prototype.
2092 <tag/Availability/cc65
2094 <ref id="cclear" name="cclear">,
2095 <ref id="clrscr" name="clrscr">
2101 <sect1>cgetc<label id="cgetc"><p>
2105 <tag/Function/Read a character from the keyboard.
2106 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2107 <tag/Declaration/<tt/char cgetc (void);/
2108 <tag/Description/The function reads a character from the keyboard. If there is
2109 no character available, <tt/cgetc/ waits until the user presses a key. If the
2110 cursor is enabled by use of the <tt/cursor/ function, a blinking cursor is
2111 displayed while waiting.
2112 <tag/Limits/<itemize>
2113 <item>If the system supports a keyboard buffer, <tt/cgetc/ will fetch a key
2114 from this buffer and wait only if the buffer is empty.
2116 <tag/Availability/cc65
2118 <ref id="cursor" name="cursor">,
2119 <ref id="kbhit" name="kbhit">
2125 <sect1>chline<label id="chline"><p>
2129 <tag/Function/Output a horizontal line in text mode.
2130 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2131 <tag/Declaration/<tt/void __fastcall__ chline (unsigned char length);/
2132 <tag/Description/The function outputs a horizontal line with the given length
2133 starting at the current cursor position.
2134 <tag/Limits/<itemize>
2135 <item>The character used to draw the horizontal line is system dependent.
2136 If available, a line drawing character is used. Drawing a line that is partially
2137 off screen leads to undefined behaviour.
2138 <item>The function is only available as fastcall function, so it may only be
2139 used in presence of a prototype.
2141 <tag/Availability/cc65
2143 <ref id="chlinexy" name="chlinexy">,
2144 <ref id="cvline" name="cvline">,
2145 <ref id="cvlinexy" name="cvlinexy">
2151 <sect1>chlinexy<label id="chlinexy"><p>
2155 <tag/Function/Output a horizontal line at a given position in text mode.
2156 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2157 <tag/Declaration/<tt/void __fastcall__ chlinexy (unsigned char x, unsigned char y, unsigned char length);/
2158 <tag/Description/The function outputs a horizontal line with the given length
2159 starting at a given position.
2160 <tag/Limits/<itemize>
2161 <item>The character used to draw the horizontal line is system dependent.
2162 If available, a line drawing character is used. Drawing a line that is partially
2163 off screen leads to undefined behaviour.
2164 <item>The function is only available as fastcall function, so it may only be
2165 used in presence of a prototype.
2167 <tag/Availability/cc65
2169 <ref id="chline" name="chline">,
2170 <ref id="cvline" name="cvline">,
2171 <ref id="cvlinexy" name="cvlinexy">
2177 <sect1>clearerr<label id="clearerr"><p>
2181 <tag/Function/Clear error and end-of-file status of a stream.
2182 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
2183 <tag/Declaration/<tt/void __fastcall__ clearerr (FILE* f);/
2184 <tag/Description/<tt/clearerr/ clears the error and end-of-file status
2185 indicators for the stream <tt/f/.
2186 <tag/Limits/<itemize>
2187 <item>The function is only available as fastcall function, so it may only be
2188 used in presence of a prototype.
2190 <tag/Availability/ISO 9899
2192 <ref id="feof" name="feof">,
2193 <ref id="ferror" name="ferror">
2199 <sect1>clock<label id="clock"><p>
2203 <tag/Function/Determine the processor time used.
2204 <tag/Header/<tt/<ref id="time.h" name="time.h">/
2205 <tag/Declaration/<tt/clock_t clock (void);/
2206 <tag/Description/The <tt/clock/ function returns an approximaton of processor
2207 time used by the program. The time is returned in implementation defined
2208 units. It can be converted to seconds by dividing by the value of the macro
2209 <tt/CLOCKS_PER_SEC/.
2210 <tag/Limits/<itemize>
2211 <item>Since the machines, cc65 generated programs run on, cannot run multiple
2212 processes, the function will actually return the time since some
2213 implementation defined point in the past.
2215 <tag/Availability/ISO 9899
2217 <ref id="time" name="time">
2223 <sect1>clrscr<label id="clrscr"><p>
2227 <tag/Function/Clear the text screen.
2228 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2229 <tag/Declaration/<tt/void clrscr (void);/
2230 <tag/Description/The function clears the text screen and moves the cursor to
2231 the upper left corner.
2232 <tag/Availability/cc65
2234 <ref id="cclear" name="cclear">,
2235 <ref id="cclearxy" name="cclearxy">
2241 <sect1>close<label id="close"><p>
2245 <tag/Function/Close a file descriptor.
2246 <tag/Header/<tt/<ref id="fcntl.h" name="fcntl.h">/
2247 <tag/Declaration/<tt/int __fastcall__ close (int fd);/
2248 <tag/Description/The function closes the given file descriptor. It returns zero
2249 on success and -1 on error. If an error occurs, the cause can be determined by
2250 reading the <tt/errno/ variable.
2251 <tag/Limits/<itemize>
2252 <item>The function is only available as fastcall function, so it may only
2253 be used in presence of a prototype.
2255 <tag/Availability/POSIX 1003.1
2257 <ref id="creat" name="creat">,
2258 <ref id="open" name="open">
2264 <sect1>closedir<label id="closedir"><p>
2268 <tag/Function/Close a directory.
2269 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
2270 <tag/Declaration/<tt/int __fastcall__ closedir (DIR* dir);/
2271 <tag/Description/The function closes the given directory descriptor. It returns
2272 zero on success and -1 on error. If an error occurs, the cause can be determined
2273 by reading the <tt/errno/ variable.
2274 <tag/Limits/<itemize>
2275 <item>The function is only available as fastcall function, so it may only
2276 be used in presence of a prototype.
2278 <tag/Availability/POSIX 1003.1
2280 <ref id="opendir" name="opendir">,
2281 <ref id="readdir" name="readdir">
2287 <sect1>creat<label id="creat"><p>
2291 <tag/Function/Create a file.
2292 <tag/Header/<tt/<ref id="fcntl.h" name="fcntl.h">/
2293 <tag/Declaration/<tt/int __fastcall__ creat (const char* name, unsigned mode);/
2294 <tag/Description/<tt/creat/ creates a new file and returns the file descriptor
2295 associated with it. On error, -1 is returned and an error code is stored in
2297 <tag/Limits/<itemize>
2298 <item><tt/creat/ is identical to calling <tt/<ref id="open" name="open">/ with
2299 <tt/flags/ equal to <tt/O_WRONLY | O_CREAT | O_TRUNC/.
2300 <item>The function is only available as fastcall function, so it may only
2301 be used in presence of a prototype.
2303 <tag/Availability/POSIX 1003.1
2305 <ref id="close" name="close">,
2306 <ref id="open" name="open">
2312 <sect1>cprintf<label id="cprintf"><p>
2316 <tag/Function/Formatted output to the console.
2317 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2318 <tag/Declaration/<tt/int cprintf (const char* format, ...);/
2319 <tag/Description/The arguments are converted to text where necessary and
2320 formatted according to the format string given. The resulting string is output
2321 to the console. <tt/cprintf/ supports the same format specifiers as
2322 <tt/printf/. <!-- <tt/<ref id="printf" name="printf">/. -->
2323 <tag/Limits/<itemize>
2324 <item>Like all other <tt/conio/ output functions, <tt/cprintf/ distinguishes
2325 between <tt/\r/ and <tt/\n/.
2327 <tag/Availability/cc65
2329 <ref id="cputc" name="cputc">,
2330 <ref id="cputcxy" name="cputcxy">,
2331 <ref id="cputs" name="cputs">,
2332 <ref id="cputsxy" name="cputsxy">,
2333 <ref id="vcprintf" name="vcprintf">
2339 <sect1>cputc<label id="cputc"><p>
2343 <tag/Function/Output a character directly to the console.
2344 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2345 <tag/Declaration/<tt/void __fastcall__ cputc (char c);/
2346 <tag/Description/Output one character to the console at the current cursor
2348 <tag/Limits/<itemize>
2349 <item>Like all other <tt/conio/ output functions, <tt/cputc/ distinguishes
2350 between <tt/\r/ and <tt/\n/.
2351 <item>The function is only available as fastcall function, so it may only
2352 be used in presence of a prototype.
2354 <tag/Availability/cc65
2356 <ref id="cprintf" name="cprintf">,
2357 <ref id="cputcxy" name="cputcxy">,
2358 <ref id="cputs" name="cputs">,
2359 <ref id="cputsxy" name="cputsxy">,
2360 <ref id="vcprintf" name="vcprintf">
2366 <sect1>cputcxy<label id="cputcxy"><p>
2370 <tag/Function/Output a character at a specific screen position.
2371 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2372 <tag/Declaration/<tt/void __fastcall__ cputcxy (unsigned char x, unsigned char y, char c);/
2373 <tag/Description/<tt/cputcxy/ moves the cursor to the given x/y position on
2374 the screen and outputs one character.
2375 <tag/Limits/<itemize>
2376 <item>Like all other <tt/conio/ output functions, <tt/cputcxy/ distinguishes
2377 between <tt/\r/ and <tt/\n/.
2378 <item>The function is only available as fastcall function, so it may only
2379 be used in presence of a prototype.
2381 <tag/Availability/cc65
2383 <ref id="cprintf" name="cprintf">,
2384 <ref id="cputc" name="cputc">,
2385 <ref id="cputs" name="cputs">,
2386 <ref id="cputsxy" name="cputsxy">,
2387 <ref id="vcprintf" name="vcprintf">
2393 <sect1>cputs<label id="cputs"><p>
2397 <tag/Function/Output a string directly to the console.
2398 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2399 <tag/Declaration/<tt/void __fastcall__ cputs (const char* s);/
2400 <tag/Description/The function outputs the given string on the console at the
2401 current cursor position.
2402 <tag/Limits/<itemize>
2403 <item>Like all other <tt/conio/ output functions, <tt/cputs/ distinguishes
2404 between <tt/\r/ and <tt/\n/.
2405 <item>The function is only available as fastcall function, so it may only
2406 be used in presence of a prototype.
2408 <tag/Availability/cc65
2410 <ref id="cprintf" name="cprintf">,
2411 <ref id="cputc" name="cputc">,
2412 <ref id="cputcxy" name="cputcxy">,
2413 <ref id="cputsxy" name="cputsxy">,
2414 <ref id="vcprintf" name="vcprintf">
2420 <sect1>cputsxy<label id="cputsxy"><p>
2424 <tag/Function/Output a string to the console at a given position.
2425 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2426 <tag/Declaration/<tt/void __fastcall__ cputsxy (unsigned char x, unsigned char y, const char* s);/
2427 <tag/Description/<tt/cputsxy/ moves the cursor to the given x/y position,
2428 and outputs the string <tt/s/.
2429 <tag/Limits/<itemize>
2430 <item>Like all other <tt/conio/ output functions, <tt/cputsxy/ distinguishes
2431 between <tt/\r/ and <tt/\n/.
2432 <item>The function is only available as fastcall function, so it may only
2433 be used in presence of a prototype.
2435 <tag/Availability/cc65
2437 <ref id="cprintf" name="cprintf">,
2438 <ref id="cputc" name="cputc">,
2439 <ref id="cputcxy" name="cputcxy">,
2440 <ref id="cputs" name="cputs">,
2441 <ref id="vcprintf" name="vcprintf">
2447 <sect1>cursor<label id="cursor"><p>
2451 <tag/Function/Enable/disable a blinking cursor when waiting for keyboard input.
2452 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2453 <tag/Declaration/<tt/unsigned char __fastcall__ cursor (unsigned char onoff);/
2454 <tag/Description/If the argument to the function is non zero, a blinking cursor
2455 will be enabled when the <tt/cgetc/ function waits for input from the keyboard.
2456 If the argument is zero, <tt/cgetc/ will wait without a blinking cursor.
2457 <tag/Limits/<itemize>
2458 <item>The function is only available as fastcall function, so it may only
2459 be used in presence of a prototype.
2461 <tag/Availability/cc65
2463 <ref id="cgetc" name="cgetc">,
2464 <ref id="kbhit" name="kbhit">
2470 <sect1>cvline<label id="cvline"><p>
2474 <tag/Function/Output a vertical line in text mode.
2475 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2476 <tag/Declaration/<tt/void __fastcall__ cvline (unsigned char length);/
2477 <tag/Description/The function outputs a vertical line with the given length
2478 starting at the current cursor position.
2479 <tag/Limits/<itemize>
2480 <item>The character used to draw the vertical line is system dependent.
2481 If available, a line drawing character is used. Drawing a line that is partially
2482 off screen leads to undefined behaviour.
2483 <item>The function is only available as fastcall function, so it may only be
2484 used in presence of a prototype.
2486 <tag/Availability/cc65
2488 <ref id="chline" name="chline">,
2489 <ref id="chlinexy" name="chlinexy">,
2490 <ref id="cvlinexy" name="cvlinexy">
2496 <sect1>cvlinexy<label id="cvlinexy"><p>
2500 <tag/Function/Output a vertical line at a given position in text mode.
2501 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
2502 <tag/Declaration/<tt/void __fastcall__ cvlinexy (unsigned char x, unsigned char y, unsigned char length);/
2503 <tag/Description/The function outputs a vertical line with the given length
2504 starting at a given position.
2505 <tag/Limits/<itemize>
2506 <item>The character used to draw the vertical line is system dependent.
2507 If available, a line drawing character is used. Drawing a line that is partially
2508 off screen leads to undefined behaviour.
2509 <item>The function is only available as fastcall function, so it may only be
2510 used in presence of a prototype.
2512 <tag/Availability/cc65
2514 <ref id="chline" name="chline">,
2515 <ref id="chlinexy" name="chlinexy">,
2516 <ref id="cvline" name="cvline">
2522 <sect1>div<label id="div"><p>
2526 <tag/Function/Divide two ints and return quotient and remainder.
2527 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
2528 <tag/Declaration/<tt/div_t __fastcall__ div (int numer, int denom);/
2529 <tag/Description/<tt/div/ divides <tt/numer/ by <tt/denom/ and returns the
2530 quotient and remainder in a <tt/div_t/ structure.
2533 <item>The function is only available as fastcall function, so it may only
2534 be used in presence of a prototype.
2536 <tag/Availability/ISO 9899
2544 <sect1>em_commit<label id="em_commit"><p>
2548 <tag/Function/Commit changes into extended memory.
2549 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2550 <tag/Declaration/<tt/void em_commit (void);/
2551 <tag/Description/Commit changes in the memory window to extended storage. If
2552 the contents of the memory window have been changed, these changes may be lost
2553 if <tt/<ref id="em_map" name="em_map">/, <tt/<ref id="em_use" name="em_use">/,
2554 <tt/<ref id="em_copyfrom" name="em_copyfrom">/ or <tt/<ref id="em_copyto"
2555 name="em_copyto">/ are called without calling <tt/em_commit/ first.
2556 <tag/Limits/<itemize>
2557 <item>Calling <tt/em_commit/ does not necessarily mean that changes to the
2558 memory window are discarded, it does just mean that the drivers is allowed
2560 <item>The function is only available as fastcall function, so it may only be
2561 used in presence of a prototype.
2562 <item>The function produces undefined results if no extended memory driver is
2565 <tag/Availability/cc65
2567 <ref id="em_load_driver" name="em_load_driver">,
2568 <ref id="em_map" name="em_map">,
2569 <ref id="em_use" name="em_use">
2575 <sect1>em_copyfrom<label id="em_copyfrom"><p>
2579 <tag/Function/Copy from extended into normal memory.
2580 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2581 <tag/Declaration/<tt/void __fastcall__ em_copyfrom (const struct em_copy* copy_data);/
2582 <tag/Description/Copy data from extended memory into linear memory. Source and
2583 target addresses as well as the number of bytes to transfer are specified in
2584 the <tt/em_copy/ structure that is passed as a parameter.
2585 <tag/Limits/<itemize>
2586 <item>Calling <tt/em_copyfrom/ will invalidate the memory window, so if you
2587 made any changes to the data in the window, call <tt/<ref id="em_commit"
2588 name="em_commit">/ first, or the changes are lost.
2589 <item>The function is only available as fastcall function, so it may only be
2590 used in presence of a prototype.
2591 <item>The function produces undefined results if no extended memory driver is
2594 <tag/Availability/cc65
2596 <ref id="em_commit" name="em_commit">,
2597 <ref id="em_copyto" name="em_copyto">,
2598 <ref id="em_load_driver" name="em_load_driver">
2604 <sect1>em_copyto<label id="em_copyto"><p>
2608 <tag/Function/Copy from normal into extended memory.
2609 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2610 <tag/Declaration/<tt/void __fastcall__ em_copyto (const struct em_copy* copy_data);/
2611 <tag/Description/Copy data from linear into extended memory. Source and
2612 target addresses as well as the number of bytes to transfer are specified in
2613 the <tt/em_copy/ structure that is passed as a parameter.
2614 <tag/Limits/<itemize>
2615 <item>Calling <tt/em_copyto/ will invalidate the memory window, so if you
2616 made any changes to the data in the window, call <tt/<ref id="em_commit"
2617 name="em_commit">/ first, or the changes are lost.
2618 <item>The function is only available as fastcall function, so it may only be
2619 used in presence of a prototype.
2620 <item>The function produces undefined results if no extended memory driver is
2623 <tag/Availability/cc65
2625 <ref id="em_commit" name="em_commit">,
2626 <ref id="em_copyfrom" name="em_copyfrom">,
2627 <ref id="em_load_driver" name="em_load_driver">
2633 <sect1>em_install<label id="em_install"><p>
2637 <tag/Function/Install an already loaded extended memory driver.
2638 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2639 <tag/Declaration/<tt/unsigned char _fastcall__ em_install (void* driver);/
2640 <tag/Description/The function installs an already loaded extended memory driver
2641 and returns an error code. The function may be used to install a driver linked
2642 statically to the program.
2643 <tag/Limits/<itemize>
2644 <item>Not all drivers are able to detect if the supported hardware is really
2646 <item>The function is only available as fastcall function, so it may only be
2647 used in presence of a prototype.
2649 <tag/Availability/cc65
2651 <ref id="em_load_driver" name="em_load_driver">,
2652 <ref id="em_uninstall" name="em_uninstall">,
2653 <ref id="em_unload" name="em_unload">
2659 <sect1>em_load_driver<label id="em_load_driver"><p>
2663 <tag/Function/Load and initialize an extended memory driver.
2664 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2665 <tag/Declaration/<tt/void __fastcall__ em_load_driver (const char* name);/
2666 <tag/Description/Load an extended memory driver into memory and initialize
2667 it. The function returns an error code that tells if all this has been
2669 <tag/Limits/<itemize>
2670 <item>Not all drivers are able to detect if the supported hardware is really
2672 <item>The function is only available as fastcall function, so it may only be
2673 used in presence of a prototype.
2674 <item>The driver is loaded by name, so currently you must know the type of
2675 extended memory that should be supported. There is no autodetect capability.
2677 <tag/Availability/cc65
2679 <ref id="em_unload" name="em_unload">
2685 <sect1>em_map<label id="em_map"><p>
2689 <tag/Function/Make a page of extended memory accessible.
2690 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2691 <tag/Declaration/<tt/void* __fastcall__ em_map (unsigned page);/
2692 <tag/Description/The function maps one page of extended memory into linear
2693 memory and returns a pointer to the page frame. Depending on the hardware
2694 and driver, the data is either mapped into the address space or transfered
2695 into a buffer. If you don't need the actual contents of the page (for example
2696 because you're going to overwrite it completely), it is better to call
2697 <tt/<ref id="em_use" name="em_use">/ instead. <tt/em_use/ will not transfer the
2698 data if it is possible to avoid that.
2699 <tag/Limits/<itemize>
2700 <item>Calling <tt/em_map/ will invalidate the memory window, so if you
2701 made any changes to the data in the window, call <tt/<ref id="em_commit"
2702 name="em_commit">/ first, or the changes are lost.
2703 <item>The function is only available as fastcall function, so it may only be
2704 used in presence of a prototype.
2705 <item>The function produces undefined results if no extended memory driver is
2708 <tag/Availability/cc65
2710 <ref id="em_commit" name="em_commit">,
2711 <ref id="em_load_driver" name="em_load_driver">,
2712 <ref id="em_use" name="em_use">
2718 <sect1>em_pagecount<label id="em_pagecount"><p>
2722 <tag/Function/Return the number of available extended memory pages.
2723 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2724 <tag/Declaration/<tt/unsigned em_pagecount (void);/
2725 <tag/Description/The function returns the size of the extended memory supported
2726 by the driver in 256 byte pages.
2727 <tag/Limits/<itemize>
2728 <item>The function returns zero if no extended memory driver is loaded.
2729 <item>The function may return zero if the supported hardware was not detected.
2731 <tag/Availability/cc65
2733 <ref id="em_load_driver" name="em_load_driver">
2739 <sect1>em_uninstall<label id="em_uninstall"><p>
2743 <tag/Function/Uninstall an already loaded extended memory driver.
2744 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2745 <tag/Declaration/<tt/unsigned char em_uninstall (void);/
2746 <tag/Description/The function uninstalls an already loaded extended memory
2747 driver but doesn't remove it from memory.
2748 <tag/Limits/<itemize>
2749 <item>If the driver has been loaded using <tt/<ref id="em_load_driver"
2750 name="em_load_driver">/, <tt/<ref id="em_unload" name="em_unload">/
2751 should be used instead of <tt/em_uninstall/ so the driver is also removed
2754 <tag/Availability/cc65
2756 <ref id="em_install" name="em_install">,
2757 <ref id="em_load_driver" name="em_load_driver">,
2758 <ref id="em_unload" name="em_unload">
2764 <sect1>em_unload<label id="em_unload"><p>
2768 <tag/Function/Unload an extended memory driver.
2769 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2770 <tag/Declaration/<tt/unsigned char em_unload (void);/
2771 <tag/Description/The function unloads a loaded extended memory driver and
2772 frees all memory allocated for the driver.
2773 <tag/Limits/<itemize>
2774 <item>The function does nothing if no driver is loaded.
2776 <tag/Availability/cc65
2778 <ref id="em_load_driver" name="em_load_driver">
2784 <sect1>em_use<label id="em_use"><p>
2788 <tag/Function/Prepare an extended memory page for use.
2789 <tag/Header/<tt/<ref id="em.h" name="em.h">/
2790 <tag/Declaration/<tt/void* __fastcall__ em_use (unsigned page);/
2791 <tag/Description/The function maps one page of extended memory into linear
2792 memory and returns a pointer to the page frame. This function is similar to
2793 <tt/<ref id="em_map" name="em_map">/, but will not transfer data into the
2794 actual memory window in the assumption that the existing data is wrong or
2795 will get overwritten.
2796 <tag/Limits/<itemize>
2797 <item>Calling <tt/em_use/ will invalidate the memory window, so if you
2798 made any changes to the data in the window, call <tt/<ref id="em_commit"
2799 name="em_commit">/ first, or the changes are lost.
2800 <item>The function is only available as fastcall function, so it may only be
2801 used in presence of a prototype.
2802 <item>The function produces undefined results if no extended memory driver is
2805 <tag/Availability/cc65
2807 <ref id="em_commit" name="em_commit">,
2808 <ref id="em_load_driver" name="em_load_driver">,
2809 <ref id="em_map" name="em_map">
2815 <sect1>exit<label id="exit"><p>
2819 <tag/Function/Terminate the program.
2820 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
2821 <tag/Declaration/<tt/void __fastcall__ exit (int status);/
2822 <tag/Description/<tt/exit/ terminates the program. The argument specifies the
2823 return code of the program. Before termination, all files are closed, buffered
2824 output is written and any functions registered with <tt/<ref id="atexit"
2825 name="atexit">/ are called. Common values for status are <tt/EXIT_SUCCESS/ and
2826 <tt/EXIT_FAILURE/ which are also defined in <tt/<ref id="stdlib.h"
2828 <tag/Limits/<itemize>
2829 <item>The function is only available as fastcall function, so it may only
2830 be used in presence of a prototype.
2831 <item>It depends on the host machine if the program return code can be
2832 evaluated or is ignored.
2834 <tag/Availability/ISO 9899
2836 <ref id="abort" name="abort">,
2837 <ref id="exit" name="exit">
2843 <sect1>exec<label id="exec"><p>
2847 <tag/Function/Execute a program file.
2848 <tag/Header/<tt/<ref id="unistd.h" name="unistd.h">/
2849 <tag/Declaration/<tt/int __fastcall__ exec (const char* progname, const char* cmdline);/
2850 <tag/Description/<tt/exec/ replaces the currently running program by a new one.
2851 Calling <tt/exec()/ is identical to calling <tt/<ref id="exit" name="exit()">/,
2852 then loading and starting the program named in the first argument, passing
2853 the command line specified as second argument. Instead of an empty string,
2854 a <tt/NULL/ pointer may be passed as second parameter.
2855 On success, the function does not return. On failure, -1 is returned and
2856 <tt/errno/ contains an error code.
2857 <tag/Limits/<itemize>
2858 <item>The function is only available as fastcall function, so it may only
2859 be used in presence of a prototype.
2860 <item>On most platforms, the function needs to copy a small stub loader to
2861 some memory area outside the program space. This may collide with other
2862 programs. See the platform specific docs on this.
2863 <item>Because it is necessary to terminate the running program before the
2864 memory can be reused to load the new one, there is a high chance that the
2865 function may not be able to return on errors.
2866 <item>The command line is passed to the new program in the same way as cc65
2867 programs expect the command line. If the new program is not a cc65 generated
2868 program, it may not be able to read it.
2870 <tag/Availability/cc65
2872 <ref id="exit" name="exit">
2878 <sect1>fast<label id="fast"><p>
2882 <tag/Function/Switch the C128 into 2MHz mode.
2883 <tag/Header/<tt/<ref id="c128.h" name="c128.h">/
2884 <tag/Declaration/<tt/void fast (void);/
2885 <tag/Description/The function will switch the clock of the C128 to 2MHz. This
2886 will nearly double the speed compared to slow mode.
2887 <tag/Limits/<itemize>
2888 <item>The function is specific to the C128.
2889 <item>2MHz clock will not work in 40 column mode.
2891 <tag/Availability/C128
2893 <ref id="slow" name="slow">,
2894 <ref id="toggle_videomode" name="toggle_videomode">,
2895 <ref id="videomode" name="videomode">
2901 <sect1>feof<label id="feof"><p>
2905 <tag/Function/Return the end-of-file indicator of a stream.
2906 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
2907 <tag/Declaration/<tt/int __fastcall__ feof (FILE* f);/
2908 <tag/Description/<tt/feof/ tests the end-of-file indicator ofthe stream
2909 <tt/f/, and returns a non zero value if it is set.
2910 <tag/Limits/<itemize>
2911 <item>The indicator is set only after a read past the end of a file is
2913 <item>The function is only available as fastcall function, so it may only be
2914 used in presence of a prototype.
2916 <tag/Availability/ISO 9899
2918 <ref id="feof" name="clearerr">,
2919 <ref id="ferror" name="ferror">
2925 <sect1>ferror<label id="ferror"><p>
2929 <tag/Function/Return the error indicator of a stream.
2930 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
2931 <tag/Declaration/<tt/int __fastcall__ ferror (FILE* f);/
2932 <tag/Description/<tt/ferror/ tests the error indicator of the stream
2933 <tt/f/, and returns a non zero value if it is set.
2934 <tag/Limits/<itemize>
2935 <item>The function is only available as fastcall function, so it may only be
2936 used in presence of a prototype.
2938 <tag/Availability/ISO 9899
2940 <ref id="feof" name="clearerr">,
2941 <ref id="ferror" name="feof">
2947 <sect1>fileno<label id="fileno"><p>
2951 <tag/Function/Return the file handle used by a stream.
2952 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
2953 <tag/Declaration/<tt/int __fastcall__ fileno (FILE* f);/
2954 <tag/Description/The <tt/fileno/ function returns the file handle used
2955 internally by a C stream. This file handle (an integer) can be used as a
2956 handle for the POSIX input/output functions.
2957 <tag/Limits/<itemize>
2958 <item>The function is only available as fastcall function, so it may only be
2959 used in presence of a prototype.
2960 <item>Mixing C file I/O functions and POSIX file I/O functions for the same
2961 file may have unpredictable results.
2963 <tag/Availability/POSIX 1003.1
2965 <ref id="creat" name="creat">,
2966 <ref id="open" name="open"> <!-- , -->
2967 <!-- <ref id="read" name="read">, -->
2968 <!-- <ref id="write" name="write"> -->
2974 <sect1>free<label id="free"><p>
2978 <tag/Function/Free a block of dynamic memory.
2979 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
2980 <tag/Declaration/<tt/void __fastcall__ free (void* block);/
2981 <tag/Description/Free a block of dynamic memory previously allocated with
2982 <tt/<ref id="malloc" name="malloc">/, <tt/<ref id="calloc" name="calloc">/
2983 or <tt/<ref id="realloc" name="realloc">/. As an exception, if the passed
2984 pointer is <tt/NULL/, no action is performed.
2987 <item>Passing an already free'd block to <tt/free/ again will cause undefined
2988 behaviour and may crash your program.
2989 <item>The function is only available as fastcall function, so it may only
2990 be used in presence of a prototype.
2992 <tag/Availability/ISO 9899
2994 <ref id="_heapadd" name="_heapadd">,
2995 <ref id="_heapblocksize" name="_heapblocksize">,
2996 <ref id="_heapmaxavail" name="_heapmaxavail">,
2997 <ref id="_heapmemavail" name="_heapmemavail">,
2998 <ref id="calloc" name="calloc">,
2999 <ref id="malloc" name="malloc">,
3000 <ref id="realloc" name="realloc">
3006 <sect1>get_ostype<label id="get_ostype"><p>
3010 <tag/Function/The function returns the operating system, the program runs on.
3011 <tag/Header/<tt/<ref id="apple2.h" name="apple2.h">,
3012 <ref id="atari.h" name="atari.h">, <ref id="c64.h" name="c64.h">/
3013 <tag/Declaration/<tt/unsigned char get_ostype (void);/
3014 <tag/Description/<tt/get_ostype/ is machine dependent and does not exist for
3015 all supported targets. If it exists, it returns a number that identifies the
3016 operating system or machine type, the program runs on. The machine dependent
3017 header files define constants that can be used to check the return code.
3018 <tag/Limits/<itemize>
3019 <item>The function does not exist on all platforms.
3020 <item>The return codes are platform dependent.
3022 <tag/Availability/cc65 (not all platforms)
3028 <sect1>getcpu<label id="getcpu"><p>
3032 <tag/Function/Determine on which CPU the program is running.
3033 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
3034 <tag/Declaration/<tt/unsigned char getcpu (void);/
3035 <tag/Description/The function checks on which CPU the code is running. It
3036 returns one of the constants<itemize>
3038 <item><tt/CPU_65C02/
3039 <item><tt/CPU_65816/
3041 <tag/Limits/<itemize>
3042 <item>Other, more exotic CPU types are not disinguished.
3044 <tag/Availability/cc65
3050 <sect1>getenv<label id="getenv"><p>
3054 <tag/Function/Return a value from the environment.
3055 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
3056 <tag/Declaration/<tt/char* __fastcall__ getenv (const char* name);/
3057 <tag/Description/The function searches the environment for an entry that
3058 matches <tt/name/ and returns its value. The environment consists of a list
3059 of strings in the form <tt/name=value/. If there is no match, <tt/getenv/
3061 <tag/Limits/<itemize>
3062 <item>What exactly is stored in the environment depends on the machine the
3063 program is running on.
3064 <item>The function is only available as fastcall function, so it may only
3065 be used in presence of a prototype.
3067 <tag/Availability/ISO 9899
3073 <sect1>getopt<label id="getopt"><p>
3077 <tag/Function/Parse command line options.
3078 <tag/Header/<tt/<ref id="unistd.h" name="unistd.h">/
3079 <tag/Declaration/<tt/int __fastcall__ getopt (int argc, char* const* argv,
3080 const char* optstring);/
3081 <tag/Description/The function parses command line arguments, <tt/argc/ and
3082 <tt/argv/ are the argument count and array passed to <tt/main/. <tt/optstring/
3083 is a string that contains command line option characters. If a character in
3084 <tt/optstring/ is followed by a colon, the option requires an argument. An
3085 option on the command line is recognized if it is one of the option characters
3087 <tt/getopt/ must be called repeatedly. It will return each option character
3088 found on the command line and <tt/EOF/ (-1) if there is no other option. An
3089 option argument is placed in <tt/optarg/, the index of the next element on the
3090 command line to be processed is placed in <tt/optind/.
3091 <tag/Limits/<itemize>
3092 <item>The implementation will not reorder options. A non option on the command
3093 line will terminate option processing. All remaining arguments are not
3094 recognized as options, even if the start with a '-' character.
3095 <item>The function is only available as fastcall function, so it may only
3096 be used in presence of a prototype.
3098 <tag/Availability/POSIX.2
3104 <sect1>gotox<label id="gotox"><p>
3108 <tag/Function/Move the text mode cursor to a new X position.
3109 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
3110 <tag/Declaration/<tt/void __fastcall__ gotox (unsigned char x);/
3111 <tag/Description/The function moves the text mode cursor to the specified X
3112 position while leaving the Y position untouched. The leftmost position on the
3113 screen has the coordinate 0.
3114 <tag/Limits/<itemize>
3115 <item>The function is only available as fastcall function, so it may
3116 only be used in presence of a prototype.
3117 <item>Invalid values for the X position (out of screen coordinates) may
3118 lead to undefined behaviour.
3120 <tag/Availability/cc65
3122 <ref id="gotoy" name="gotoy">,
3123 <ref id="gotoxy" name="gotoxy">,
3124 <ref id="wherex" name="wherex">,
3125 <ref id="wherey" name="wherey">
3131 <sect1>gotoxy<label id="gotoxy"><p>
3135 <tag/Function/Move the text mode cursor to a new position.
3136 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
3137 <tag/Declaration/<tt/void __fastcall__ gotoxy (unsigned char x, unsigned char y);/
3138 <tag/Description/The function moves the text mode cursor to the specified
3139 position. The leftmost position on the screen has the X coordinate 0, the
3140 topmost line has the Y coordinate 0.
3141 <tag/Limits/<itemize>
3142 <item>The function is only available as fastcall function, so it may only be
3143 used in presence of a prototype.
3144 <item>Invalid values for any of both coordinates (out of screen positions) may
3145 lead to undefined behaviour.
3147 <tag/Availability/cc65
3149 <ref id="gotox" name="gotox">,
3150 <ref id="gotoy" name="gotoy">,
3151 <ref id="wherex" name="wherex">,
3152 <ref id="wherey" name="wherey">
3158 <sect1>gotoy<label id="gotoy"><p>
3162 <tag/Function/Move the text mode cursor to a new Y position.
3163 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
3164 <tag/Declaration/<tt/void __fastcall__ gotoy (unsigned char x);/
3165 <tag/Description/The function moves the text mode cursor to the specified Y
3166 position while leaving the X position untouched. The uppermost position on the
3167 screen has the coordinate 0.
3168 <tag/Limits/<itemize>
3169 <item>The function is only available as fastcall function, so it may
3170 only be used in presence of a prototype.
3171 <item>Invalid values for the Y position (out of screen coordinates) may lead
3172 to undefined behaviour.
3174 <tag/Availability/cc65
3176 <ref id="gotox" name="gotox">,
3177 <ref id="gotoxy" name="gotoxy">,
3178 <ref id="wherex" name="wherex">,
3179 <ref id="wherey" name="wherey">
3185 <sect1>isalnum<label id="isalnum"><p>
3189 <tag/Function/Check if a given character is a letter or digit.
3190 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3191 <tag/Declaration/<tt/int __fastcall__ isalnum (int c);/
3192 <tag/Description/The function returns a non zero value if the given argument
3193 is a letter or digit. The return value is zero if the character is anything
3195 <tag/Limits/<itemize>
3196 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3197 inline sequence generated by the macro will not work correctly for values
3198 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3199 this range. The non inline function may be accessed by <tt/#undef/'ing
3201 <item>When compiling without <tt/-Os/, the function is only available as
3202 fastcall function, so it may only be used in presence of a prototype.
3204 <tag/Availability/ISO 9899
3206 <ref id="isalpha" name="isalpha">,
3207 <ref id="isascii" name="isascii">,
3208 <ref id="isblank" name="isblank">,
3209 <ref id="iscntrl" name="iscntrl">,
3210 <ref id="isdigit" name="isdigit">,
3211 <ref id="isgraph" name="isgraph">,
3212 <ref id="islower" name="islower">,
3213 <ref id="isprint" name="isprint">,
3214 <ref id="ispunct" name="ispunct">,
3215 <ref id="isspace" name="isspace">,
3216 <ref id="isupper" name="isupper">,
3217 <ref id="isxdigit" name="isxdigit">
3223 <sect1>isalpha<label id="isalpha"><p>
3227 <tag/Function/Check if a given character is a letter.
3228 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3229 <tag/Declaration/<tt/int __fastcall__ isalpha (int c);/
3230 <tag/Description/The function returns a non zero value if the given argument
3231 is a letter. The return value is zero if the character is anything else.
3232 <tag/Limits/<itemize>
3233 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3234 inline sequence generated by the macro will not work correctly for values
3235 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3236 this range. The non inline function may be accessed by <tt/#undef/'ing the
3238 <item>When compiling without <tt/-Os/, the function is only available as
3239 fastcall function, so it may only be used in presence of a prototype.
3241 <tag/Availability/ISO 9899
3243 <ref id="isalnum" name="isalnum">,
3244 <ref id="isascii" name="isascii">,
3245 <ref id="isblank" name="isblank">,
3246 <ref id="iscntrl" name="iscntrl">,
3247 <ref id="isdigit" name="isdigit">,
3248 <ref id="isgraph" name="isgraph">,
3249 <ref id="islower" name="islower">,
3250 <ref id="isprint" name="isprint">,
3251 <ref id="ispunct" name="ispunct">,
3252 <ref id="isspace" name="isspace">,
3253 <ref id="isupper" name="isupper">,
3254 <ref id="isxdigit" name="isxdigit">
3260 <sect1>isascii<label id="isascii"><p>
3264 <tag/Function/Check if a given character is in the ASCII (0..127) range.
3265 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3266 <tag/Declaration/<tt/int __fastcall__ isascii (int c);/
3267 <tag/Description/The function returns a non zero value if the given argument
3268 is in the range 0..127 (the range of valid ASCII characters) and zero if not.
3269 <tag/Limits/<itemize>
3270 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3271 inline sequence generated by the macro will not work correctly for values
3272 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3273 this range. The non inline function may be accessed by <tt/#undef/'ing the
3275 <item>When compiling without <tt/-Os/, the function is only available as
3276 fastcall function, so it may only be used in presence of a prototype.
3278 <tag/Availability/ISO 9899
3280 <ref id="isalnum" name="isalnum">,
3281 <ref id="isalpha" name="isalpha">,
3282 <ref id="isblank" name="isblank">,
3283 <ref id="iscntrl" name="iscntrl">,
3284 <ref id="isdigit" name="isdigit">,
3285 <ref id="isgraph" name="isgraph">,
3286 <ref id="islower" name="islower">,
3287 <ref id="isprint" name="isprint">,
3288 <ref id="ispunct" name="ispunct">,
3289 <ref id="isspace" name="isspace">,
3290 <ref id="isupper" name="isupper">,
3291 <ref id="isxdigit" name="isxdigit">
3297 <sect1>isblank<label id="isblank"><p>
3301 <tag/Function/Check if a given character is a space or tab.
3302 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3303 <tag/Declaration/<tt/int __fastcall__ isblank (int c);/
3304 <tag/Description/The function returns a non zero value if the given argument
3305 is a space or tab character. The return value is zero if the character is
3307 <tag/Limits/<itemize>
3308 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3309 inline sequence generated by the macro will not work correctly for values
3310 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3311 this range. The non inline function may be accessed by <tt/#undef/'ing the
3313 <item>When compiling without <tt/-Os/, the function is only available as
3314 fastcall function, so it may only be used in presence of a prototype.
3316 <tag/Availability/cc65
3318 <ref id="isalnum" name="isalnum">,
3319 <ref id="isalpha" name="isalpha">,
3320 <ref id="isascii" name="isascii">,
3321 <ref id="iscntrl" name="iscntrl">,
3322 <ref id="isdigit" name="isdigit">,
3323 <ref id="isgraph" name="isgraph">,
3324 <ref id="islower" name="islower">,
3325 <ref id="isprint" name="isprint">,
3326 <ref id="ispunct" name="ispunct">,
3327 <ref id="isspace" name="isspace">,
3328 <ref id="isupper" name="isupper">,
3329 <ref id="isxdigit" name="isxdigit">
3335 <sect1>iscntrl<label id="iscntrl"><p>
3339 <tag/Function/Check if a given character is a control character.
3340 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3341 <tag/Declaration/<tt/int __fastcall__ iscntrl (int c);/
3342 <tag/Description/The function returns a non zero value if the given argument
3343 is a control character. The return value is zero if the character is anything
3345 <tag/Limits/<itemize>
3346 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3347 inline sequence generated by the macro will not work correctly for values
3348 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3349 this range. The non inline function may be accessed by <tt/#undef/'ing the
3351 <item>When compiling without <tt/-Os/, the function is only available as
3352 fastcall function, so it may only be used in presence of a prototype.
3354 <tag/Availability/ISO 9899
3356 <ref id="isalnum" name="isalnum">,
3357 <ref id="isalpha" name="isalpha">,
3358 <ref id="isascii" name="isascii">,
3359 <ref id="isblank" name="isblank">,
3360 <ref id="isdigit" name="isdigit">,
3361 <ref id="isgraph" name="isgraph">,
3362 <ref id="islower" name="islower">,
3363 <ref id="isprint" name="isprint">,
3364 <ref id="ispunct" name="ispunct">,
3365 <ref id="isspace" name="isspace">,
3366 <ref id="isupper" name="isupper">,
3367 <ref id="isxdigit" name="isxdigit">
3373 <sect1>isdigit<label id="isdigit"><p>
3377 <tag/Function/Check if a given character is a digit.
3378 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3379 <tag/Declaration/<tt/int __fastcall__ isdigit (int c);/
3380 <tag/Description/The function returns a non zero value if the given argument
3381 is a digit. The return value is zero if the character is anything else.
3382 <tag/Limits/<itemize>
3383 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3384 inline sequence generated by the macro will not work correctly for values
3385 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3386 this range. The non inline function may be accessed by <tt/#undef/'ing the
3388 <item>When compiling without <tt/-Os/, the function is only available as
3389 fastcall function, so it may only be used in presence of a prototype.
3391 <tag/Availability/ISO 9899
3393 <ref id="isalnum" name="isalnum">,
3394 <ref id="isalpha" name="isalpha">,
3395 <ref id="isascii" name="isascii">,
3396 <ref id="isblank" name="isblank">,
3397 <ref id="iscntrl" name="iscntrl">,
3398 <ref id="isgraph" name="isgraph">,
3399 <ref id="islower" name="islower">,
3400 <ref id="isprint" name="isprint">,
3401 <ref id="ispunct" name="ispunct">,
3402 <ref id="isspace" name="isspace">,
3403 <ref id="isupper" name="isupper">,
3404 <ref id="isxdigit" name="isxdigit">
3410 <sect1>isgraph<label id="isgraph"><p>
3414 <tag/Function/Check if a given character is a printable character (except
3416 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3417 <tag/Declaration/<tt/int __fastcall__ isgraph (int c);/
3418 <tag/Description/The function returns a non zero value if the given argument
3419 is a printable character with the exception of space. The return value is zero
3420 if the character is anything else.
3421 <tag/Limits/<itemize>
3422 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3423 inline sequence generated by the macro will not work correctly for values
3424 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3425 this range. The non inline function may be accessed by <tt/#undef/'ing the
3427 <item>When compiling without <tt/-Os/, the function is only available as
3428 fastcall function, so it may only be used in presence of a prototype.
3430 <tag/Availability/ISO 9899
3432 <ref id="isalnum" name="isalnum">,
3433 <ref id="isalpha" name="isalpha">,
3434 <ref id="isascii" name="isascii">,
3435 <ref id="isblank" name="isblank">,
3436 <ref id="iscntrl" name="iscntrl">,
3437 <ref id="isdigit" name="isdigit">,
3438 <ref id="islower" name="islower">,
3439 <ref id="isprint" name="isprint">,
3440 <ref id="ispunct" name="ispunct">,
3441 <ref id="isspace" name="isspace">,
3442 <ref id="isupper" name="isupper">,
3443 <ref id="isxdigit" name="isxdigit">
3449 <sect1>islower<label id="islower"><p>
3453 <tag/Function/Check if a given character is a lower case letter.
3454 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3455 <tag/Declaration/<tt/int __fastcall__ islower (int c);/
3456 <tag/Description/The function returns a non zero value if the given argument
3457 is a lower case letter. The return value is zero if the character is anything
3459 <tag/Limits/<itemize>
3460 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3461 inline sequence generated by the macro will not work correctly for values
3462 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3463 this range. The non inline function may be accessed by <tt/#undef/'ing the
3465 <item>When compiling without <tt/-Os/, the function is only available as
3466 fastcall function, so it may only be used in presence of a prototype.
3468 <tag/Availability/ISO 9899
3470 <ref id="isalnum" name="isalnum">,
3471 <ref id="isalpha" name="isalpha">,
3472 <ref id="isascii" name="isascii">,
3473 <ref id="isblank" name="isblank">,
3474 <ref id="iscntrl" name="iscntrl">,
3475 <ref id="isdigit" name="isdigit">,
3476 <ref id="isgraph" name="isgraph">,
3477 <ref id="isprint" name="isprint">,
3478 <ref id="ispunct" name="ispunct">,
3479 <ref id="isspace" name="isspace">,
3480 <ref id="isupper" name="isupper">,
3481 <ref id="isxdigit" name="isxdigit">
3487 <sect1>isprint<label id="isprint"><p>
3491 <tag/Function/Check if a given character is a printable character.
3492 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3493 <tag/Declaration/<tt/int __fastcall__ isprint (int c);/
3494 <tag/Description/The function returns a non zero value if the given argument
3495 is a printable character (this includes the space character). The return value
3496 is zero if the character is anything else.
3497 <tag/Limits/<itemize>
3498 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3499 inline sequence generated by the macro will not work correctly for values
3500 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3501 this range. The non inline function may be accessed by <tt/#undef/'ing the
3503 <item>When compiling without <tt/-Os/, the function is only available as
3504 fastcall function, so it may only be used in presence of a prototype.
3506 <tag/Availability/ISO 9899
3508 <ref id="isalnum" name="isalnum">,
3509 <ref id="isalpha" name="isalpha">,
3510 <ref id="isascii" name="isascii">,
3511 <ref id="isblank" name="isblank">,
3512 <ref id="iscntrl" name="iscntrl">,
3513 <ref id="isdigit" name="isdigit">,
3514 <ref id="isgraph" name="isgraph">,
3515 <ref id="islower" name="islower">,
3516 <ref id="ispunct" name="ispunct">,
3517 <ref id="isspace" name="isspace">,
3518 <ref id="isupper" name="isupper">,
3519 <ref id="isxdigit" name="isxdigit">
3525 <sect1>ispunct<label id="ispunct"><p>
3529 <tag/Function/Check if a given character is a printable character but not a
3530 space or an alphanumeric character.
3531 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3532 <tag/Declaration/<tt/int __fastcall__ ispunct (int c);/
3533 <tag/Description/The function returns a non zero value if the given argument
3534 is a printable character, but not a space or anything alphanumeric. The return
3535 value is zero if the character is anything else.
3536 <tag/Limits/<itemize>
3537 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3538 inline sequence generated by the macro will not work correctly for values
3539 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3540 this range. The non inline function may be accessed by <tt/#undef/'ing the
3542 <item>When compiling without <tt/-Os/, the function is only available as
3543 fastcall function, so it may only be used in presence of a prototype.
3545 <tag/Availability/ISO 9899
3547 <ref id="isalnum" name="isalnum">,
3548 <ref id="isalpha" name="isalpha">,
3549 <ref id="isascii" name="isascii">,
3550 <ref id="isblank" name="isblank">,
3551 <ref id="iscntrl" name="iscntrl">,
3552 <ref id="isdigit" name="isdigit">,
3553 <ref id="isgraph" name="isgraph">,
3554 <ref id="islower" name="islower">,
3555 <ref id="isprint" name="isprint">,
3556 <ref id="isspace" name="isspace">,
3557 <ref id="isupper" name="isupper">,
3558 <ref id="isxdigit" name="isxdigit">
3564 <sect1>isspace<label id="isspace"><p>
3568 <tag/Function/Check if a given character is a a white-space character.
3569 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3570 <tag/Declaration/<tt/int __fastcall__ isspace (int c);/
3571 <tag/Description/The function returns a non zero value if the given argument
3572 is a white space character. The return value is zero if the character is
3573 anything else. The standard white space characters are: space, formfeed ('\f'),
3574 newline ('\n'), carriage return ('\r'), horizontal tab ('\t'), and vertical tab
3576 <tag/Limits/<itemize>
3577 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3578 inline sequence generated by the macro will not work correctly for values
3579 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3580 this range. The non inline function may be accessed by <tt/#undef/'ing the
3582 <item>When compiling without <tt/-Os/, the function is only available as
3583 fastcall function, so it may only be used in presence of a prototype.
3585 <tag/Availability/ISO 9899
3587 <ref id="isalnum" name="isalnum">,
3588 <ref id="isalpha" name="isalpha">,
3589 <ref id="isascii" name="isascii">,
3590 <ref id="isblank" name="isblank">,
3591 <ref id="iscntrl" name="iscntrl">,
3592 <ref id="isdigit" name="isdigit">,
3593 <ref id="isgraph" name="isgraph">,
3594 <ref id="islower" name="islower">,
3595 <ref id="isprint" name="isprint">,
3596 <ref id="ispunct" name="ispunct">,
3597 <ref id="isupper" name="isupper">,
3598 <ref id="isxdigit" name="isxdigit">
3604 <sect1>isupper<label id="isupper"><p>
3608 <tag/Function/Check if a given character is an upper case letter.
3609 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3610 <tag/Declaration/<tt/int __fastcall__ isupper (int c);/
3611 <tag/Description/The function returns a non zero value if the given argument
3612 is an upper case letter. The return value is zero if the character is anything
3614 <tag/Limits/<itemize>
3615 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3616 inline sequence generated by the macro will not work correctly for values
3617 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3618 this range. The non inline function may be accessed by <tt/#undef/'ing the
3620 <item>When compiling without <tt/-Os/, the function is only available as
3621 fastcall function, so it may only be used in presence of a prototype.
3623 <tag/Availability/ISO 9899
3625 <ref id="isalnum" name="isalnum">,
3626 <ref id="isalpha" name="isalpha">,
3627 <ref id="isascii" name="isascii">,
3628 <ref id="isblank" name="isblank">,
3629 <ref id="iscntrl" name="iscntrl">,
3630 <ref id="isdigit" name="isdigit">,
3631 <ref id="isgraph" name="isgraph">,
3632 <ref id="islower" name="islower">,
3633 <ref id="isprint" name="isprint">,
3634 <ref id="ispunct" name="ispunct">,
3635 <ref id="isspace" name="isspace">,
3636 <ref id="isxdigit" name="isxdigit">
3642 <sect1>isxdigit<label id="isxdigit"><p>
3646 <tag/Function/Check if a given character is a hexadecimal digit.
3647 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
3648 <tag/Declaration/<tt/int __fastcall__ isxdigit (int c);/
3649 <tag/Description/The function returns a non zero value if the given argument
3650 is a hexadecimal digit (0..9, a..f and A..F). The return value is zero if the
3651 character is anything else.
3652 <tag/Limits/<itemize>
3653 <item>When compiling with <tt/-Os/ the function is actually a macro. The
3654 inline sequence generated by the macro will not work correctly for values
3655 outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
3656 this range. The non inline function may be accessed by <tt/#undef/'ing the
3658 <item>When compiling without <tt/-Os/, the function is only available as
3659 fastcall function, so it may only be used in presence of a prototype.
3661 <tag/Availability/ISO 9899
3663 <ref id="isalnum" name="isalnum">,
3664 <ref id="isalpha" name="isalpha">,
3665 <ref id="isascii" name="isascii">,
3666 <ref id="isblank" name="isblank">,
3667 <ref id="iscntrl" name="iscntrl">,
3668 <ref id="isdigit" name="isdigit">,
3669 <ref id="isgraph" name="isgraph">,
3670 <ref id="islower" name="islower">,
3671 <ref id="isprint" name="isprint">,
3672 <ref id="ispunct" name="ispunct">,
3673 <ref id="isspace" name="isspace">,
3674 <ref id="isupper" name="isupper">
3680 <sect1>itoa<label id="itoa"><p>
3684 <tag/Function/Convert an integer into a string.
3685 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
3686 <tag/Declaration/<tt/char* __fastcall__ itoa (int val, char* buf, int radix);/
3687 <tag/Description/<tt/itoa/ converts the integer <tt/val/ into a string using
3688 <tt/radix/ as the base.
3689 <tag/Limits/<itemize>
3690 <item>There are no provisions to prevent a buffer overflow.
3691 <item>If <tt/val/ contains <tt/INT_MIN/, the behaviour is undefined.
3692 <item>The function is non standard, so it is not available in strict ANSI mode.
3693 You should probably use <tt/sprintf/ instead.
3694 <item>The function is only available as fastcall function, so it may only be
3695 used in presence of a prototype.
3697 <tag/Availability/cc65
3699 <ref id="atoi" name="atoi">,
3700 <ref id="atol" name="atol">,
3701 <ref id="ltoa" name="ltoa">,
3702 <ref id="ultoa" name="ultoa">,
3703 <ref id="utoa" name="utoa">
3709 <sect1>joy_count<label id="joy_count"><p>
3713 <tag/Function/Return the number of joysticks supported by the current driver.
3714 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3715 <tag/Declaration/<tt/unsigned char joy_count (void);/
3716 <tag/Description/The function returns a the number of joysticks supported
3717 by the current joystick driver.
3718 <tag/Limits/<itemize>
3719 <item>A joystick driver must be loaded using <ref id="joy_load_driver"
3720 name="joy_load_driver"> before calling this function.
3721 <item>The function returns the number of joysticks supported by the driver.
3722 There's no way to check for the number of actually connected joysticks.
3724 <tag/Availability/cc65
3726 <ref id="joy_load_driver" name="joy_load_driver">,
3727 <ref id="joy_read" name="joy_read">
3733 <sect1>joy_install<label id="joy_install"><p>
3737 <tag/Function/Install an already loaded driver and return an error code.
3738 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3739 <tag/Declaration/<tt/unsigned char __fastcall__ joy_install (void* driver);/
3740 <tag/Description/The function installs a driver that was already loaded into
3741 memory (or linked statically to the program). It returns an error code
3742 (<tt/JOY_ERR_OK/ in case of success).
3743 <tag/Limits/<itemize>
3744 <item>The function is only available as fastcall function, so it may only be
3745 used in presence of a prototype.
3747 <tag/Availability/cc65
3749 <ref id="joy_load_driver" name="joy_load_driver">,
3750 <ref id="joy_uninstall" name="joy_uninstall">,
3751 <ref id="joy_unload" name="joy_unload">
3757 <sect1>joy_load_driver<label id="joy_load_driver"><p>
3761 <tag/Function/Load a driver from disk and install it.
3762 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3763 <tag/Declaration/<tt/unsigned char __fastcall__ joy_load_driver (const char* driver);/
3764 <tag/Description/The function loads a driver with the given name from disk
3765 and installs it. An error code is returned, which is <tt/JOY_ERR_OK/ if the
3766 driver was successfully loaded and installed.
3767 <tag/Limits/<itemize>
3768 <item>The function is only available as fastcall function, so it may only be
3769 used in presence of a prototype.
3771 <tag/Availability/cc65
3773 <ref id="joy_install" name="joy_install">,
3774 <ref id="joy_uninstall" name="joy_uninstall">,
3775 <ref id="joy_unload" name="joy_unload">
3781 <sect1>joy_read<label id="joy_read"><p>
3785 <tag/Function/Read the status of a joystick.
3786 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3787 <tag/Declaration/<tt/unsigned char __fastcall__ joy_read (unsigned char joystick);/
3788 <tag/Description/The function reads the status bits for a joystick. The number
3789 of the joystick is passed as parameter. The result may be examined by using one
3790 of the <tt/JOY_xxx/ macros from <ref id="joystick.h" name="joystick.h">.
3791 <tag/Limits/<itemize>
3792 <item>A joystick driver must be loaded using <ref id="joy_load_driver"
3793 name="joy_load_driver"> before calling this function.
3794 <item>The function is only available as fastcall function, so it may only be
3795 used in presence of a prototype.
3797 <tag/Availability/cc65
3799 <ref id="joy_count" name="joy_count">,
3800 <ref id="joy_load_driver" name="joy_load_driver">,
3801 <ref id="joy_unload" name="joy_unload">
3807 <sect1>joy_uninstall<label id="joy_uninstall"><p>
3811 <tag/Function/Uninstall the current joystick driver.
3812 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3813 <tag/Declaration/<tt/unsigned char joy_uninstall (void);/
3814 <tag/Description/The function uninstalls the currently installed joystick
3815 driver. It does not remove the driver from memory. The function returns an
3816 error code, which is <tt/JOY_ERR_OK/ if the driver was successfully uninstalled.
3817 <tag/Limits/<itemize>
3818 <item>A joystick driver must be installed using <ref id="joy_install"
3819 name="joy_install"> before calling this function.
3821 <tag/Availability/cc65
3823 <ref id="joy_install" name="joy_install">,
3824 <ref id="joy_load_driver" name="joy_load_driver">,
3825 <ref id="joy_unload" name="joy_unload">
3831 <sect1>joy_unload<label id="joy_unload"><p>
3835 <tag/Function/Uninstall, then unload the current joystick driver.
3836 <tag/Header/<tt/<ref id="joystick.h" name="joystick.h">/
3837 <tag/Declaration/<tt/unsigned char joy_unload (void);/
3838 <tag/Description/The function uninstalls the currently installed joystick
3839 driver and removes it from memory. An error code is returned, which is
3840 <tt/JOY_ERR_OK/ if the driver was successfully uninstalled.
3841 <tag/Limits/<itemize>
3842 <item>A joystick driver must be loaded using <ref id="joy_load_driver"
3843 name="joy_load_driver"> before calling this function.
3845 <tag/Availability/cc65
3847 <ref id="joy_load_driver" name="joy_load_driver">
3853 <sect1>kbhit<label id="kbhit"><p>
3857 <tag/Function/Check if there's a key waiting in the keyboard buffer.
3858 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
3859 <tag/Declaration/<tt/unsigned char kbhit (void);/
3860 <tag/Description/The function returns a value of zero if there is no character
3861 waiting to be read from the keyboard. It returns non zero otherwise.
3862 <tag/Limits/<itemize>
3863 <item>If the system does not support a keyboard buffer (most systems
3864 do), the function is rather useless.
3866 <tag/Availability/cc65
3868 <ref id="cgetc" name="cgetc">,
3869 <ref id="cursor" name="cursor">
3875 <sect1>labs<label id="labs"><p>
3879 <tag/Function/Returns the absolute value of a long integer.
3880 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
3881 <tag/Declaration/<tt/long __fastcall__ labs (long v);/
3882 <tag/Description/<tt/labs/ returns the absolute value of the argument passed to
3884 <tag/Limits/<itemize>
3885 <item>The return value is undefined if <tt/LONG_MIN/ is passed to the function.
3886 <item>The function is only available as fastcall function, so it may only be
3887 used in presence of a prototype.
3889 <tag/Availability/ISO 9899
3891 <ref id="abs" name="abs">
3897 <sect1>ltoa<label id="ltoa"><p>
3901 <tag/Function/Convert a long integer into a string.
3902 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
3903 <tag/Declaration/<tt/char* __fastcall__ ltoa (long val, char* buf, int radix);/
3904 <tag/Description/<tt/itoa/ converts the long integer <tt/val/ into a string
3905 using <tt/radix/ as the base.
3906 <tag/Limits/<itemize>
3907 <item>There are no provisions to prevent a buffer overflow.
3908 <item>If <tt/val/ contains <tt/LONG_MIN/, the behaviour is undefined.
3909 <item>The function is non standard, so it is not available in strict ANSI mode.
3910 You should probably use <tt/sprintf/ instead.
3911 <item>The function is only available as fastcall function, so it may only be
3912 used in presence of a prototype.
3914 <tag/Availability/cc65
3916 <ref id="atoi" name="atoi">,
3917 <ref id="atol" name="atol">,
3918 <ref id="itoa" name="itoa">,
3919 <ref id="ultoa" name="ultoa">,
3920 <ref id="utoa" name="utoa">
3926 <sect1>localeconv<label id="localeconv"><p>
3930 <tag/Function/Returns a pointer to the current locale structure.
3931 <tag/Header/<tt/<ref id="locale.h" name="locale.h">/
3932 <tag/Declaration/<tt/struct lconv* localeconv (void);/
3933 <tag/Description/<tt/localeconv/ returns a pointer to the current locale
3935 <tag/Limits/<itemize>
3936 <item>cc65 supports only the "C" locale, so even after setting a new locale
3937 using <tt/<ref id="setlocale" name="setlocale">/, the structure returned will
3940 <tag/Availability/ISO 9899
3942 <ref id="setlocale" name="setlocale">
3948 <sect1>longjmp<label id="longjmp"><p>
3952 <tag/Function/Non local goto.
3953 <tag/Header/<tt/<ref id="setjmp.h" name="setjmp.h">/
3954 <tag/Declaration/<tt/void __fastcall__ longjmp (jmp_buf buf, int retval);/
3955 <tag/Description/The <tt/longjmp/ function restores a program context from the
3956 data in <tt/buf/, which must have been set by a preceeding call to
3957 <tt/<ref id="setjmp" name="setjmp">/. Program execution continues as if the
3958 call to <tt/<ref id="setjmp" name="setjmp">/ has just returned the value
3962 <item>If the parameter <tt/retval/ is zero, the function will behave as if it
3963 was called with a value of one.
3964 <item>The function is only available as fastcall function, so it may only
3965 be used in presence of a prototype.
3967 <tag/Availability/ISO 9899
3969 <ref id="setjmp" name="setjmp">
3975 <sect1>malloc<label id="malloc"><p>
3979 <tag/Function/Allocate dynamic memory.
3980 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
3981 <tag/Declaration/<tt/void* __fastcall__ malloc (size_t size);/
3982 <tag/Description/<tt/malloc/ allocates size bytes on the heap and returns a
3983 pointer to the allocated memory block. On error (not enough memory available),
3984 <tt/malloc/ returns <tt/NULL/.
3987 <item>The function is only available as fastcall function, so it may only
3988 be used in presence of a prototype.
3990 <tag/Availability/ISO 9899
3992 <ref id="_heapadd" name="_heapadd">,
3993 <ref id="_heapblocksize" name="_heapblocksize">,
3994 <ref id="_heapmaxavail" name="_heapmaxavail">,
3995 <ref id="_heapmemavail" name="_heapmemavail">,
3996 <ref id="calloc" name="calloc">,
3997 <ref id="free" name="free">,
3998 <ref id="realloc" name="realloc">,
3999 <ref id="strdup" name="strdup">
4005 <sect1>memchr<label id="memchr"><p>
4009 <tag/Function/Search for a character in a block of raw memory.
4010 <tag/Header/<tt/<ref id="string.h" name="string.h">/
4011 <tag/Declaration/<tt/void* __fastcall__ strchr (const void* mem, int c, size_t count);/
4012 <tag/Description/The <tt/memchr/ function locates the first occurrence of <tt/c/
4013 (converted to a char) in the block of raw memory string pointed to by <tt/mem/
4014 that is of size <tt/count/. Upon completion, the function returns a pointer to
4015 the character found, or a null pointer if the character was not found.
4016 <tag/Limits/<itemize>
4017 <item>The function is only available as fastcall function, so it may only
4018 be used in presence of a prototype.
4020 <tag/Availability/ISO 9899
4022 <ref id="strchr" name="strchr">
4028 <sect1>memcmp<label id="memcmp"><p>
4032 <tag/Function/Compare two memory areas.
4033 <tag/Header/<tt/<ref id="string.h" name="string.h">/
4034 <tag/Declaration/<tt/int __fastcall__ memcmp (const void* p1, const void* p2, size_t count);/
4035 <tag/Description/<tt/memcmp/ compares <tt/count/ bytes from the memory area
4036 pointed to by <tt/p1/ into the memory area pointed to by <tt/p2/. It returns a value that is less than
4037 zero if <tt/p1/ is less than <tt/p2/, zero if <tt/p1/ is the same as <tt/p2/,
4038 and a value greater than zero if <tt/p1/ is greater than <tt/p2/.
4041 <item>The function is only available as fastcall function, so it may only
4042 be used in presence of a prototype.
4044 <tag/Availability/ISO 9899
4046 <ref id="strcmp" name="strcmp">,
4047 <ref id="memmove" name="memmove">,
4048 <ref id="memset" name="memset">
4054 <sect1>memcpy<label id="memcpy"><p>
4058 <tag/Function/Copy a memory area.
4059 <tag/Header/<tt/<ref id="string.h" name="string.h">/
4060 <tag/Declaration/<tt/void* __fastcall__ memcpy (void* dest, const void* src, size_t count);/
4061 <tag/Description/<tt/memcpy/ copies <tt/count/ bytes from the memory area
4062 pointed to by <tt/src/ into the memory area pointed to by <tt/dest/. It returns
4066 <item>The result is undefined if the memory areas do overlap. Use
4067 <tt/<ref id="memmove" name="memmove">/ to copy overlapping memory areas.
4068 <item>The function is only available as fastcall function, so it may only
4069 be used in presence of a prototype.
4071 <tag/Availability/ISO 9899
4073 <ref id="_swap" name="_swap">,
4074 <ref id="memmove" name="memmove">,
4075 <ref id="memset" name="memset">
4081 <sect1>memmove<label id="memmove"><p>
4085 <tag/Function/Copy a memory area.
4086 <tag/Header/<tt/<ref id="string.h" name="string.h">/
4087 <tag/Declaration/<tt/void* __fastcall__ memmove (void* dest, const void* src, size_t count);/
4088 <tag/Description/<tt/memmove/ copies <tt/count/ bytes from the memory area
4089 pointed to by <tt/src/ into the memory area pointed to by <tt/dest/. It returns
4093 <item>While <tt/memmove/ allows the memory areas to overlap, it has some
4094 additional overhead compared to <tt/<ref id="memcpy" name="memcpy">/.
4095 <item>The function is only available as fastcall function, so it may only
4096 be used in presence of a prototype.
4098 <tag/Availability/ISO 9899
4100 <ref id="_swap" name="_swap">,
4101 <ref id="memcpy" name="memcpy">,
4102 <ref id="memset" name="memset">
4108 <sect1>memset<label id="memset"><p>
4112 <tag/Function/Fill a memory area.
4113 <tag/Header/<tt/<ref id="string.h" name="string.h">/
4114 <tag/Declaration/<tt/void* __fastcall__ memset (void* p, int val, size_t count);/
4115 <tag/Description/<tt/memset/ fills the memory area pointed to by <tt/p/ with
4116 the value <tt/val/. The function returns <tt/p/.
4119 <item>The function is only available as fastcall function, so it may only
4120 be used in presence of a prototype.
4122 <tag/Availability/ISO 9899
4124 <ref id="_swap" name="_swap">,
4125 <ref id="bzero" name="bzero">,
4126 <ref id="memcpy" name="memcpy">,
4127 <ref id="memmove" name="memmove">
4133 <sect1>mod_free<label id="mod_free"><p>
4137 <tag/Function/Free a relocatable module.
4138 <tag/Header/<tt/<ref id="modload.h" name="modload.h">/
4139 <tag/Declaration/<tt/void __fastcall__ mod_free (void* module);/
4140 <tag/Description/The function will free a module loaded into memory by use of
4141 the <tt/<ref id="mod_load" name="mod_load">/ function.
4142 <tag/Limits/<itemize>
4143 <item>The pointer passed as parameter is the pointer to the module memory,
4144 not the pointer to the control structure.
4146 <tag/Availability/cc65
4148 <ref id="mod_load" name="mod_load">
4154 <sect1>mod_load<label id="mod_load"><p>
4158 <tag/Function/Load a relocatable module.
4159 <tag/Header/<tt/<ref id="modload.h" name="modload.h">/
4160 <tag/Declaration/<tt/unsigned char mod_load (struct mod_ctrl* ctrl);/
4161 <tag/Description/The function will load a code module into memory and relocate
4162 it. The function will return an error code. If <tt/MLOAD_OK/ is returned, the
4163 outgoing fields in the passed <tt/mod_ctrl/ struct contain information about
4164 the module just loaded. Possible error codes are:
4166 <item><tt/MLOAD_OK/ - Module load successful
4167 <item><tt/MLOAD_ERR_READ/ - Read error
4168 <item><tt/MLOAD_ERR_HDR/ - Header error
4169 <item><tt/MLOAD_ERR_OS/ - Wrong operating system
4170 <item><tt/MLOAD_ERR_FMT/ - Data format error
4171 <item><tt/MLOAD_ERR_MEM/ - Not enough memory
4173 <tag/Limits/<itemize>
4174 <item>The <htmlurl url="ld65.html" name="ld65"> linker is needed to create
4175 relocatable o65 modules for use with this function.
4177 <tag/Availability/cc65
4179 <ref id="mod_free" name="mod_free">
4185 <sect1>mouse_setbox<label id="mouse_setbox"><p>
4189 <tag/Function/Specify a bounding box for the mouse cursor.
4190 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4191 <tag/Declaration/<tt/void __fastcall__ mouse_setbox (const struct mouse_box* box);/
4192 <tag/Description/The function allows to set a bounding box for mouse movement.
4193 <tag/Limits/<itemize>
4194 <item>The function does not check if the mouse cursor is currently within the
4195 given rectangle. Placing the mouse cursor within the bounding box is the
4196 responsibility of the programmer.
4197 <item>While the bounding box may be larger than the actual screen size, the
4198 standard mouse cursor draw routines may fail to set the cursor to coordinates
4199 outside of the screen area. Depending on the platform, you may have to supply
4200 your own mouse cursor routines.
4201 <item>The function is only available as fastcall function, so it may only be
4202 used in presence of a prototype.
4204 <tag/Availability/cc65
4206 <ref id="mouse_getbox" name="mouse_getbox">,
4207 <ref id="mouse_move" name="mouse_move">
4213 <sect1>mouse_getbox<label id="mouse_getbox"><p>
4217 <tag/Function/Return the current bounding box for the mouse cursor.
4218 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4219 <tag/Declaration/<tt/void __fastcall__ mouse_getbox (struct mouse_box* box);/
4220 <tag/Description/The function queries the current bounding box for mouse
4222 <tag/Limits/<itemize>
4223 <item>The function is only available as fastcall function, so it may only be
4224 used in presence of a prototype.
4226 <tag/Availability/cc65
4228 <ref id="mouse_move" name="mouse_move">,
4229 <ref id="mouse_setbox" name="mouse_setbox">
4235 <sect1>mouse_buttons<label id="mouse_buttons"><p>
4239 <tag/Function/Return a bit mask encoding the state of the mouse buttons.
4240 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4241 <tag/Declaration/<tt/unsigned char mouse_buttons (void);/
4242 <tag/Description/The function returns a bit mask that encodes the state of the
4243 mouse buttons. You may use the <tt/MOUSE_BTN_XXX/ flags to decode the function
4245 <tag/Availability/cc65
4247 <ref id="mouse_info" name="mouse_info">,
4248 <ref id="mouse_pos" name="mouse_pos">
4254 <sect1>mouse_geterrormsg<label id="mouse_geterrormsg"><p>
4258 <tag/Function/Return a readable error message for an error code.
4259 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4260 <tag/Declaration/<tt/const char* __fastcall__ mouse_geterrormsg (unsigned char
4262 <tag/Description/The function returns an error message (in english) for the
4263 error code passed parameter.
4264 <tag/Limits/<itemize>
4265 <item>The function will return "Unknown error" for invalid error codes.
4266 <item>The function is only available as fastcall function, so it may only be
4267 used in presence of a prototype.
4269 <tag/Availability/cc65
4271 <ref id="mouse_load_driver" name="mouse_load_driver">,
4272 <ref id="mouse_uninstall" name="mouse_uninstall">,
4273 <ref id="mouse_unload" name="mouse_unload">
4279 <sect1>mouse_hide<label id="mouse_hide"><p>
4283 <tag/Function/Hide the mouse pointer.
4284 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4285 <tag/Declaration/<tt/void mouse_hide (void);/
4286 <tag/Description/The function hides the mouse pointer. It manages a counter
4287 that is shared between <tt/<ref id="mouse_show" name="mouse_show">/ and
4288 <tt/mouse_hide/ so that every call call to <tt/mouse_hide/ must be followed by
4289 a call to <tt/<ref id="mouse_show" name="mouse_show">/ to make the mouse cursor
4291 <tag/Availability/cc65
4293 <ref id="mouse_show" name="mouse_show">
4299 <sect1>mouse_info<label id="mouse_info"><p>
4303 <tag/Function/Return the state of the mouse buttons and the position of the
4305 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4306 <tag/Declaration/<tt/void __fastcall__ mouse_info (struct mouse_info* info);/
4307 <tag/Description/The function returns the state of the mouse buttons and the
4308 position of the mouse in the <tt/mouse_info/ structure passed as parameter.
4309 <tag/Limits/<itemize>
4310 <item>The <tt/mouse_info/ struct is a superset of the <tt/mouse_pos/ struct,
4311 so if you just need the mouse position, call <tt/<ref id="mouse_pos"
4312 name="mouse_pos">/ instead.
4313 <item>The function is only available as fastcall function, so it may only be
4314 used in presence of a prototype.
4316 <tag/Availability/cc65
4318 <ref id="mouse_buttons" name="mouse_buttons">,
4319 <ref id="mouse_pos" name="mouse_pos">
4325 <sect1>mouse_install<label id="mouse_install"><p>
4329 <tag/Function/Install an already loaded mouse driver.
4330 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4331 <tag/Declaration/<tt/unsigned char __fastcall__ mouse_install (const struct
4332 mouse_callbacks* c, void* driver);/
4333 <tag/Description/The function installs an already loaded mouse driver and
4334 returns an error code. The <tt/mouse_callbacks/ structure passed as first
4335 parameter contains pointers to routines needed to move or hide/show the mouse
4336 pointer. Defaults for these routines are supplied by the library, so if you
4337 can live with these defaults (which are platform specific), just pass a
4338 pointer to <tt/mouse_def_callbacks/. The function may be used to install a
4339 driver linked statically to the program.
4340 <tag/Limits/<itemize>
4341 <item>Not all drivers are able to detect if the supported hardware is really
4343 <item>After installing a driver, the mouse cursor is hidden.
4344 <item>The function is only available as fastcall function, so it may only be
4345 used in presence of a prototype.
4347 <tag/Availability/cc65
4349 <ref id="mouse_load_driver" name="mouse_load_driver">,
4350 <ref id="mouse_uninstall" name="mouse_uninstall">,
4351 <ref id="mouse_unload" name="mouse_unload">
4357 <sect1>mouse_ioctl<label id="mouse_ioctl"><p>
4361 <tag/Function/Call the driver specific ioctl function.
4362 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4363 <tag/Declaration/<tt/unsigned char __fastcall__ mouse_ioctl (unsigned char code, void* data);/
4364 <tag/Description/The function calls the IOCTL entry in the mouse driver,
4365 which is driver specific. The <tt/code/ parameter will choose between
4366 different IOCTL functions, and the <tt/data/ depends on code. The
4367 function returns an error code. The purpose of this function is to allow
4368 for driver specific extensions. See the documentation for a specific mouse
4369 driver for supported ioctl calls.
4370 <tag/Limits/<itemize>
4371 <item>Calling this function is non portable, because each driver may
4372 implement different ioctl calls (or none at all).
4373 <item>The function is only available as fastcall function, so it may only be
4374 used in presence of a prototype.
4376 <tag/Availability/cc65
4382 <sect1>mouse_load_driver<label id="mouse_load_driver"><p>
4386 <tag/Function/Load and initialize a mouse driver.
4387 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4388 <tag/Declaration/<tt/unsigned char __fastcall__ mouse_load_driver (const struct
4389 mouse_callbacks* c, const char* driver);/
4390 <tag/Description/Load a mouse driver into memory and initialize it. The
4391 function returns an error code that tells if the call has been successful. The
4392 <tt/mouse_callbacks/ structure passed as first parameter contains pointers to
4393 routines needed to move or hide/show the mouse pointer. Defaults for these
4394 routines are supplied by the library, so if you can live with these defaults
4395 (which are platform specific), just pass a pointer to <tt/mouse_def_callbacks/.
4396 <tag/Limits/<itemize>
4397 <item>The driver is loaded by name, so currently you must know the type of
4398 mouse that should be supported. There is no autodetect capability.
4399 <item>Not all drivers are able to detect if the supported hardware is really
4401 <item>After installing a driver, the mouse cursor is hidden.
4402 <item>The function is only available as fastcall function, so it may only be
4403 used in presence of a prototype.
4405 <tag/Availability/cc65
4407 <ref id="mouse_install" name="mouse_install">,
4408 <ref id="mouse_uninstall" name="mouse_uninstall">,
4409 <ref id="mouse_unload" name="mouse_unload">
4415 <sect1>mouse_move<label id="mouse_move"><p>
4419 <tag/Function/Move the mouse cursor to a specific position.
4420 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4421 <tag/Declaration/<tt/void __fastcall__ mouse_move (int x, int y);/
4422 <tag/Description/The function updates the mouse position. If the mouse cursor
4423 is visible, it is shown at the new position.
4424 <tag/Limits/<itemize>
4425 <item>The function does not check if the new position is within the bounding
4426 box specified with <tt/<ref id="mouse_setbox" name="mouse_setbox">/.
4427 <item>The function is only available as fastcall function, so it may only be
4428 used in presence of a prototype.
4430 <tag/Availability/cc65
4432 <ref id="mouse_getbox" name="mouse_getbox">,
4433 <ref id="mouse_setbox" name="mouse_setbox">
4439 <sect1>mouse_pos<label id="mouse_pos"><p>
4443 <tag/Function/Return the position of the mouse.
4444 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4445 <tag/Declaration/<tt/void __fastcall__ mouse_pos (struct mouse_pos* pos);/
4446 <tag/Description/The function returns the position of the mouse in the
4447 <tt/mouse_pos/ structure passed as parameter.
4448 <tag/Limits/<itemize>
4449 <item>The <tt/mouse_pos/ struct is a subset of the <tt/mouse_info/ struct,
4450 so if you do also need the mouse buttons, call <tt/<ref id="mouse_info"
4451 name="mouse_info">/ instead.
4452 <item>The function is only available as fastcall function, so it may only be
4453 used in presence of a prototype.
4455 <tag/Availability/cc65
4457 <ref id="mouse_buttons" name="mouse_buttons">,
4458 <ref id="mouse_info" name="mouse_info">
4464 <sect1>mouse_show<label id="mouse_show"><p>
4468 <tag/Function/Show the mouse pointer.
4469 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4470 <tag/Declaration/<tt/void mouse_show (void);/
4471 <tag/Description/The function shows the mouse pointer. It manages a counter
4472 that is shared between <tt/<ref id="mouse_hide" name="mouse_hide">/ and
4473 <tt/mouse_show/. The mouse cursor is visible if there was one more call to
4474 <tt/mouse_show/ than to <tt/<ref id="mouse_hide" name="mouse_hide">/.
4475 <tag/Availability/cc65
4477 <ref id="mouse_hide" name="mouse_hide">
4483 <sect1>mouse_uninstall<label id="mouse_uninstall"><p>
4487 <tag/Function/Uninstall an already loaded mouse driver.
4488 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4489 <tag/Declaration/<tt/unsigned char mouse_uninstall (void);/
4490 <tag/Description/The function uninstalls an already loaded mouse driver but
4491 don't removes it from memory.
4492 <tag/Limits/<itemize>
4493 <item>If the driver has been loaded using <tt/<ref id="mouse_load_driver"
4494 name="mouse_load_driver">/, <tt/<ref id="mouse_unload" name="mouse_unload">/
4495 should be used instead of <tt/mouse_uninstall/ so the driver is also removed
4498 <tag/Availability/cc65
4500 <ref id="mouse_install" name="mouse_install">,
4501 <ref id="mouse_load_driver" name="mouse_load_driver">,
4502 <ref id="mouse_unload" name="mouse_unload">
4508 <sect1>mouse_unload<label id="mouse_unload"><p>
4512 <tag/Function/Unload a mouse driver.
4513 <tag/Header/<tt/<ref id="mouse.h" name="mouse.h">/
4514 <tag/Declaration/<tt/unsigned char __fastcall__ mouse_unload (void);/
4515 <tag/Description/The function unloads a loaded mouse driver and frees all
4516 memory allocated for the driver.
4517 <tag/Limits/<itemize>
4518 <item>The function does nothing if no driver is loaded.
4520 <tag/Availability/cc65
4522 <ref id="mouse_install" name="mouse_install">,
4523 <ref id="mouse_load_driver" name="mouse_load_driver">,
4524 <ref id="mouse_uninstall" name="mouse_uninstall">
4530 <sect1>offsetof<label id="offsetof"><p>
4534 <tag/Function/Calculate the offset of a struct or union member.
4535 <tag/Header/<tt/<ref id="stddef.h" name="stddef.h">/
4536 <tag/Declaration/<tt/size_t offsetof (type, member);/
4537 <tag/Description/<tt/offsetof/ calculates the address offset of a <tt/struct/
4538 or <tt/union/ member.
4539 <tag/Limits/<itemize>
4540 <item>The function is actually a macro.
4542 <tag/Availability/ISO 9899
4548 <sect1>open<label id="open"><p>
4552 <tag/Function/Open and possibly create a file.
4553 <tag/Header/<tt/<ref id="fcntl.h" name="fcntl.h">/
4554 <tag/Declaration/<tt/int open (const char* name, int flags, ...);/
4555 <tag/Description/<tt/open/ opens a file and returns the file descriptor
4556 associated with it. On error, -1 is returned and an error code is stored in
4557 <tt/errno/. Several flags may be passed to <tt/open/ that change the behaviour.
4558 <tag/Limits/<itemize>
4559 <item>POSIX specifies an additional <tt/mode/ argument that may be passed to
4560 open, which is used as the permission mask when a new file is created. While
4561 cc65 allows to pass this argument, it is ignored.
4563 <tag/Availability/POSIX 1003.1
4565 <ref id="close" name="close">,
4566 <ref id="creat" name="creat">
4572 <sect1>opendir<label id="opendir"><p>
4576 <tag/Function/Open a directory.
4577 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
4578 <tag/Declaration/<tt/DIR* __fastcall__ opendir (const char* name);/
4579 <tag/Description/<tt/opendir/ opens a directory and returns the direcory
4580 descriptor associated with it. On error, NULL is returned and an error code is
4581 stored in <tt/errno/.
4582 <tag/Limits/<itemize>
4583 <item>The function is only available as fastcall function, so it may only
4584 be used in presence of a prototype.
4586 <tag/Availability/POSIX 1003.1
4588 <ref id="closedir" name="closedir">,
4589 <ref id="readdir" name="readdir">
4595 <sect1>peekbsys<label id="peekbsys"><p>
4599 <tag/Function/Read one byte from a location in the system bank.
4600 <tag/Header/<tt/<ref id="cbm610.h" name="cbm610.h">/,
4601 <tt/<ref id="cbm510.h" name="cbm510.h">/
4602 <tag/Declaration/<tt/unsigned char __fastcall__ peekbsys (unsigned addr);/
4603 <tag/Description/<tt/peekbsys/ reads one byte from the given address in the
4604 system bank (bank 15) of the CBM PET-II machines and returns it.
4607 <item>The function is only available as fastcall function, so it may only
4608 be used in presence of a prototype.
4609 <item>This function may be a macro depending on the compiler options. The
4610 actual function is accessible by #undef'ing the macro.
4612 <tag/Availability/cc65
4614 <ref id="PEEK" name="PEEK">,
4615 <ref id="PEEKW" name="PEEKW">,
4616 <ref id="peekwsys" name="peekwsys">,
4617 <ref id="pokebsys" name="pokebsys">,
4618 <ref id="pokewsys" name="pokewsys">
4624 <sect1>peekwsys<label id="peekwsys"><p>
4628 <tag/Function/Read one word from a location in the system bank.
4629 <tag/Header/<tt/<ref id="cbm610.h" name="cbm610.h">/,
4630 <tt/<ref id="cbm510.h" name="cbm510.h">/
4631 <tag/Declaration/<tt/unsigned __fastcall__ peekwsys (unsigned addr);/
4632 <tag/Description/<tt/peekwsys/ reads one word from the given address in the
4633 system bank (bank 15) of the CBM PET-II machines and returns it. Following
4634 the usual 6502 conventions, the low byte is read from <tt/addr/, and the
4635 high byte is read from <tt/addr+1/.
4638 <item>The function is only available as fastcall function, so it may only
4639 be used in presence of a prototype.
4640 <item>The order in which the two bytes are read is undefined.
4642 <tag/Availability/cc65
4644 <ref id="PEEK" name="PEEK">,
4645 <ref id="PEEKW" name="PEEKW">,
4646 <ref id="peekbsys" name="peekbsys">,
4647 <ref id="pokebsys" name="pokebsys">,
4648 <ref id="pokewsys" name="pokewsys">
4654 <sect1>perror<label id="perror"><p>
4658 <tag/Function/Print an error message for the error in <tt/errno/.
4659 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
4660 <tag/Declaration/<tt/void __fastcall__ perror (const char* s);/
4661 <tag/Description/<tt/perror/ prints an error message to <tt/stderr/. If <tt/s/
4662 is not <tt/NULL/ and not an empty string, it is printed followed by a colon and
4663 a blank. Then the error message for the current contents of <tt/errno/ is
4664 printed followed by a newline. The message output is the same as returned by
4665 <tt/<ref id="strerror" name="strerror">/ with an argument of <tt/errno/.
4668 <item>The function is only available as fastcall function, so it may only
4669 be used in presence of a prototype.
4671 <tag/Availability/ISO 9899
4673 <ref id="_poserror" name="_poserror">,
4674 <ref id="strerror" name="strerror">
4680 <sect1>pokebsys<label id="pokebsys"><p>
4684 <tag/Function/Write one byte to a location in the system bank.
4685 <tag/Header/<tt/<ref id="cbm610.h" name="cbm610.h">/,
4686 <tt/<ref id="cbm510.h" name="cbm510.h">/
4687 <tag/Declaration/<tt/void __fastcall__ pokebsys (unsigned addr, unsigned char val);/
4688 <tag/Description/<tt/pokebsys/ writes one byte to the given address in the
4689 system bank (bank 15) of the CBM PET-II machines.
4692 <item>The function is only available as fastcall function, so it may only
4693 be used in presence of a prototype.
4695 <tag/Availability/cc65
4697 <ref id="POKE" name="POKE">,
4698 <ref id="POKEW" name="POKEW">,
4699 <ref id="peekbsys" name="peekbsys">,
4700 <ref id="peekwsys" name="peekwsys">,
4701 <ref id="pokewsys" name="pokewsys">
4707 <sect1>pokewsys<label id="pokewsys"><p>
4711 <tag/Function/Write one word to a location in the system bank.
4712 <tag/Header/<tt/<ref id="cbm610.h" name="cbm610.h">/,
4713 <tt/<ref id="cbm510.h" name="cbm510.h">/
4714 <tag/Declaration/<tt/void __fastcall__ pokewsys (unsigned addr, unsigned val);/
4715 <tag/Description/<tt/pokewsys/ writes one word to the given address in the
4716 system bank (bank 15) of the CBM PET-II machines. Following the usual 6502
4717 conventions, the low byte of <tt/val/ is written to <tt/addr/, and the
4718 high byte is written to <tt/addr+1/.
4721 <item>The function is only available as fastcall function, so it may only
4722 be used in presence of a prototype.
4723 <item>The order in which the two bytes are written is undefined.
4725 <tag/Availability/cc65
4727 <ref id="POKE" name="POKE">,
4728 <ref id="POKEW" name="POKEW">,
4729 <ref id="peekbsys" name="peekbsys">,
4730 <ref id="peekwsys" name="peekwsys">,
4731 <ref id="pokebsys" name="pokebsys">
4737 <sect1>qsort<label id="qsort"><p>
4741 <tag/Function/Sort an array.
4742 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
4743 <tag/Declaration/<tt/void __fastcall__ qsort (void* base, size_t count,
4744 size_t size, int (*compare) (const void*, const void*));/
4745 <tag/Description/<tt/qsort/ sorts an array according to a given compare
4746 function <tt/compare/. <tt/base/ is the address of the array, <tt/count/
4747 is the number of elements, <tt/size/ the size of an element and <tt/compare/
4748 the function used to compare the members.
4751 <item>If there are multiple members with the same key, the order after calling
4752 the function is undefined.
4753 <item>The function is only available as fastcall function, so it may only
4754 be used in presence of a prototype.
4756 <tag/Availability/ISO 9899
4758 <ref id="bsearch" name="bsearch">
4764 <sect1>raise<label id="raise"><p>
4768 <tag/Function/Send a signal to the executing program.
4769 <tag/Header/<tt/<ref id="signal.h" name="signal.h">/
4770 <tag/Declaration/<tt/int __fastcall__ raise (int sig);/
4771 <tag/Description/<tt/raise/ sends the given signal to the program. If the
4772 program has installed a signal handler for the signal, this signal handler
4773 will be executed. If no handler has been installed, the default action for
4774 the raised signal will be taken. The function returns zero on success,
4776 <tag/Limits/<itemize>
4777 <item>The function is only available as fastcall function, so it may only
4778 be used in presence of a prototype.
4780 <tag/Availability/ISO 9899
4782 <ref id="abort" name="abort">,
4783 <ref id="signal" name="signal">
4789 <sect1>rand<label id="rand"><p>
4793 <tag/Function/Return a pseudo random number.
4794 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
4795 <tag/Declaration/<tt/int rand (void);/
4796 <tag/Description/The function returns a pseudo random number
4797 between 0 and <tt/RAND_MAX/ (exclusive).
4798 <tag/Limits/<itemize>
4799 <item>Without using <tt><ref id="srand" name="srand"></tt>, always the same
4800 flow of numbers is generated.
4801 <item>On startup, the function behaves as if <ref id="srand" name="srand">
4802 had been used with an argument of 1.
4804 <tag/Availability/ISO 9899
4806 <ref id="_randomize" name="_randomize">,
4807 <ref id="srand" name="srand">
4813 <sect1>readdir<label id="readdir"><p>
4817 <tag/Function/Read a directory.
4818 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
4819 <tag/Declaration/<tt/struct dirent* __fastcall__ readdir (DIR* dir);/
4820 <tag/Description/<tt/readdir/ reads the next directory entry from the directory
4821 stream pointed to by <tt/dir/. It stores the data in a <tt/dirent/ structure
4822 and returns a pointer to it. If the end of directory is reached, or an error
4823 occurs, NULL is returned. In case of errors, an error code is stored into
4825 <tag/Limits/<itemize>
4826 <item>The function is only available as fastcall function, so it may only
4827 be used in presence of a prototype.
4828 <item>The returned pointer may point to a statically allocated instance of
4829 <tt/struct dirent/, so it may get overwritten by subsequent calls to
4831 <item>On several platforms, namely the CBMs and the Atari, the disk drives get
4832 confused when opening/closing files between directory reads. So for example a
4833 program that reads the list of files on a disk, and after each call to
4834 <tt/readdir/, opens the file to process it, will fail.<newline>
4835 Possible solutions are reading the directory into memory before processing the
4836 file list, or to reset the directory by seeking to the correct position after
4837 opening/closing a file:
4839 seekdir (DIR, telldir (DIR));
4841 Platforms known to work without problems are: Apple.
4843 <tag/Availability/POSIX 1003.1
4845 <ref id="closedir" name="closedir">,
4846 <ref id="opendir" name="opendir">
4852 <sect1>realloc<label id="realloc"><p>
4856 <tag/Function/Change the size of an allocated memory block.
4857 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
4858 <tag/Declaration/<tt/void* __fastcall__ realloc (void* block, size_t size);/
4859 <tag/Description/<tt/realloc/ changes the size of the memory block pointed to
4860 by <tt/block/ to <tt/size/ bytes. If <tt/block/ is <tt/NULL/, <tt/realloc/
4861 behaves as if <tt/malloc/ had been called. If <tt/size/ is zero, <tt/realloc/
4862 behaves as if <tt/free/ had been called. On error (not enough memory
4863 available), <tt/realloc/ returns <tt/NULL/.
4866 <item>The part of the memory block that is returned will have its contents
4868 <item>This function is somewhat dangerous to use. Be careful to save the
4869 pointer you're passing somewhere else, otherwise
4871 ptr = realloc (ptr, size);
4873 will loose your only copy of <tt/ptr/ if <tt/realloc/ returns <tt/NULL/.
4874 <item>The function is only available as fastcall function, so it may only
4875 be used in presence of a prototype.
4877 <tag/Availability/ISO 9899
4879 <ref id="_heapadd" name="_heapadd">,
4880 <ref id="_heapblocksize" name="_heapblocksize">,
4881 <ref id="_heapmaxavail" name="_heapmaxavail">,
4882 <ref id="_heapmemavail" name="_heapmemavail">,
4883 <ref id="calloc" name="calloc">,
4884 <ref id="free" name="free">,
4885 <ref id="realloc" name="realloc">
4891 <sect1>remove<label id="remove"><p>
4895 <tag/Function/Delete a file.
4896 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
4897 <tag/Declaration/<tt/int __fastcall__ remove (const char* name);/
4898 <tag/Description/<tt/remove/ deletes the file with the given name. On success,
4899 zero is returned. On error, -1 is returned and <tt/errno/ is set to an error
4900 code describing the reason for the failure.
4903 <item>This function is not available on all cc65 targets (depends on the
4904 availability of file I/O).
4905 <item>The function is only available as fastcall function, so it may only
4906 be used in presence of a prototype.
4908 <tag/Availability/ISO 9899
4910 <ref id="rename" name="rename">,
4911 <ref id="unlink" name="unlink">
4914 #include <stdio.h>
4916 #define FILENAME "helloworld"
4918 if (remove (FILENAME) == 0) {
4919 printf ("We deleted %s successfully\n", FILENAME);
4921 printf ("There was a problem deleting %s\n", FILENAME);
4928 <sect1>rename<label id="rename"><p>
4932 <tag/Function/Rename a file.
4933 <tag/Header/<tt/<ref id="stdio.h" name="stdio.h">/
4934 <tag/Declaration/<tt/int __fastcall__ rename (const char* oldname, const char* newname);/
4935 <tag/Description/<tt/rename/ renames a file (gives it a new name). On success,
4936 zero is returned. On error, -1 is returned and <tt/errno/ is set to an error
4937 code describing the reason for the failure.
4940 <item>This function is not available on all cc65 targets (depends on the
4941 capabilities of the storage devices).
4942 <item>The function is only available as fastcall function, so it may only
4943 be used in presence of a prototype.
4945 <tag/Availability/ISO 9899
4947 <ref id="remove" name="remove">
4950 #include <stdio.h>
4952 #define OLDNAME "textfile.txt"
4953 #define NEWNAME "textfile.bak"
4955 if (rename (OLDNAME, NEWNAME) == 0) {
4956 printf ("Renamed %s to %s\n", OLDNAME, NEWNAME);
4958 printf ("Error renaming %s to %s\n", OLDNAME, NEWNAME);
4965 <sect1>reset_brk<label id="reset_brk"><p>
4969 <tag/Function/Resets the break vector to its original value.
4970 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
4971 <tag/Declaration/<tt/void reset_brk (void);/
4972 <tag/Description/<tt/reset_brk/ resets the break vector to the value it had
4973 before a call to <tt/set_brk/.
4976 <item>Since <tt/<ref id="set_brk" name="set_brk">/ installs an exit handler,
4977 it is not strictly necessary to call this function as part of the cleanup when
4980 <tag/Availability/cc65
4982 <ref id="reset_irq" name="reset_irq">,
4983 <ref id="set_brk" name="set_brk">,
4984 <ref id="set_irq" name="set_irq">
4990 <sect1>reset_irq<label id="reset_irq"><p>
4994 <tag/Function/Resets the C level interrupt request vector.
4995 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
4996 <tag/Declaration/<tt/void reset_irq (void);/
4997 <tag/Description/<tt/reset_irq/ resets the C level interrupt request vector.
5000 <item>The original IRQ vector is restored on program termination even without
5001 calling this function.
5003 <tag/Availability/cc65
5005 <ref id="reset_brk" name="reset_brk">,
5006 <ref id="set_brk" name="set_brk">,
5007 <ref id="set_irq" name="set_irq">
5013 <sect1>revers<label id="revers"><p>
5017 <tag/Function/Control revers character display.
5018 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
5019 <tag/Declaration/<tt/unsigned char __fastcall__ revers (unsigned char onoff);/
5020 <tag/Description/If the argument is non zero, the function enables reverse
5021 character display. If the argument is zero, reverse character display is
5022 switched off. The old value of the setting is returned.
5023 <tag/Limits/<itemize>
5024 <item>The function may not be supported by the hardware, in which case
5025 the call is ignored.
5026 <item>The function is only available as fastcall function, so it may only
5027 be used in presence of a prototype.
5029 <tag/Availability/cc65
5031 <ref id="textcolor" name="textcolor">
5037 <sect1>rewinddir<label id="rewinddir"><p>
5041 <tag/Function/Reset a directory stream.
5042 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
5043 <tag/Declaration/<tt/void __fastcall__ rewinddir (DIR* dir);/
5044 <tag/Description/<tt/rewinddir/ sets the position of the directory stream
5045 pointed to by <tt/dir/ to the start of the directory.
5046 <tag/Limits/<itemize>
5047 <item>The function is only available as fastcall function, so it may only
5048 be used in presence of a prototype.
5050 <tag/Availability/POSIX 1003.1
5052 <ref id="seekdir" name="seekdir">,
5053 <ref id="telldir" name="telldir">
5059 <sect1>screensize<label id="screensize"><p>
5063 <tag/Function/Return the dimensions of the text mode screen.
5064 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
5065 <tag/Declaration/<tt/void __fastcall__ screensize (unsigned char* x, unsigned char* y);/
5066 <tag/Description/The function returns the dimensions of the text mode screen.
5067 <tag/Limits/<itemize>
5068 <item>The function is only available as fastcall function, so it may only
5069 be used in presence of a prototype.
5071 <tag/Availability/cc65
5073 <ref id="gotox" name="gotox">,
5074 <ref id="gotoxy" name="gotoxy">,
5075 <ref id="gotoy" name="gotoy">,
5076 <ref id="wherex" name="wherex">,
5077 <ref id="wherey" name="wherey">
5083 <sect1>seekdir<label id="seekdir"><p>
5087 <tag/Function/Set the position of a directory stream.
5088 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
5089 <tag/Declaration/<tt/void __fastcall__ seekdir (DIR* dir, long offset);/
5090 <tag/Description/<tt/seekdir/ sets the position of the directory stream
5091 pointed to by <tt/dir/ to the value given in <tt/offset/, which should be a
5092 value returned by <tt/<ref id="telldir" name="telldir">/.
5093 <tag/Limits/<itemize>
5094 <item>The function is only available as fastcall function, so it may only
5095 be used in presence of a prototype.
5097 <tag/Availability/POSIX 1003.1
5099 <ref id="rewinddir" name="rewinddir">,
5100 <ref id="telldir" name="telldir">
5106 <sect1>ser_close<label id="ser_close"><p>
5110 <tag/Function/Close the port and disable interrupts
5111 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5112 <tag/Declaration/<tt/unsigned char ser_close (void);/
5113 <tag/Description/Close the port by clearing buffers and disable interrupts.
5114 <tag/Availability/cc65
5115 <tag/See also/Other serial functions.
5120 static void initialize(){
5121 struct ser_params params = {
5128 ser_install(lynx_comlynx); // This will activate the ComLynx
5130 ser_open(&params);
5137 <sect1>ser_get<label id="ser_get"><p>
5141 <tag/Function/Read a character from serial port.
5142 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5143 <tag/Declaration/<tt/unsigned char __fastcall__ ser_get (char* b);/
5144 <tag/Description/Get a character from the serial port. If no characters are
5145 available, the function will return SER_ERR_NO_DATA, so this is not a fatal
5147 <tag/Limits/<itemize>
5148 <item>The function is only available as fastcall function, so it may only
5149 be used in presence of a prototype.
5151 <tag/Availability/cc65
5152 <tag/See also/Other serial functions.
5154 Wait for a character to be available from a serial port.
5157 while (ser_get(&ch) == SER_ERR_NO_DATA)
5164 <sect1>ser_install<label id="ser_install"><p>
5168 <tag/Function/Install an already loaded driver and return an error code.
5169 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5170 <tag/Declaration/<tt/unsigned char __fastcall__ ser_install (void* driver);/
5171 <tag/Description/The function installs a driver that was already loaded into
5172 memory (or linked statically to the program). It returns an error code
5173 (<tt/SER_ERR_OK/ in case of success).
5174 <tag/Limits/<itemize>
5175 <item>The function is only available as fastcall function, so it may only be
5176 used in presence of a prototype.
5178 <tag/Availability/cc65
5180 <ref id="ser_load_driver" name="ser_load_driver">,
5181 <ref id="ser_uninstall" name="ser_uninstall">,
5182 <ref id="ser_unload" name="ser_unload">
5184 ser_install(lynx_comlynx); //Include the driver statically instead of loading it.
5190 <sect1>ser_ioctl<label id="ser_ioctl"><p>
5194 <tag/Function/Platform dependent code extensions.
5195 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5196 <tag/Declaration/<tt/unsigned __fastcall__ ser_ioctl (unsigned char code, void* data);/
5197 <tag/Description/Some platforms have extra serial functions that are not
5198 supported by standard serial driver functions. You can extend the driver to support
5199 this extra functionality bt using ser_ioctl functions.
5200 <tag/Limits/<itemize>
5201 <item>The function is only available as fastcall function, so it may only
5202 be used in presence of a prototype.
5203 <item>These functions are not easily portable to other cc65 platforms.
5205 <tag/Availability/cc65
5206 <tag/See also/Other serial functions.
5211 <sect1>ser_load_driver<label id="ser_load_driver"><p>
5215 <tag/Function/Load and install a serial driver.
5216 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5217 <tag/Declaration/<tt/unsigned char __fastcall__ ser_load_driver (const char *name);/
5218 <tag/Description/Load and install the driver by name.
5219 Will just load the driver and check if loading was successful.
5220 <tag/Limits/<itemize>
5221 <item>The function is only available as fastcall function, so it may only
5222 be used in presence of a prototype.
5224 <tag/Availability/cc65
5225 <tag/See also/Other serial functions.
5231 <sect1>ser_open<label id="ser_open"><p>
5235 <tag/Function/Open the port by setting the port parameters and enable interrupts
5236 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5237 <tag/Declaration/<tt/unsigned char __fastcall__ ser_open (const struct ser_params* params);/
5238 <tag/Description/Open the port by setting the port parameters and enable interrupts.
5239 <tag/Limits/<itemize>
5240 <item>The function is only available as fastcall function, so it may only
5241 be used in presence of a prototype.
5243 <tag/Availability/cc65
5244 <tag/See also/Other serial functions.
5249 static void initialize(){
5250 struct ser_params params = {
5257 ser_install(lynx_comlynx); // This will activate the ComLynx
5259 ser_open(&params);
5266 <sect1>ser_put<label id="ser_put"><p>
5270 <tag/Function/Write a character to a serial port.
5271 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5272 <tag/Declaration/<tt/unsigned char __fastcall__ ser_put (char b);/
5273 <tag/Description/Send a character via the serial port. There is a transmit
5274 buffer, but transmitting is not done via interrupt. The function returns
5275 SER_ERR_OVERFLOW if there is no space left in the transmit buffer.
5276 <tag/Limits/<itemize>
5277 <item>The function is only available as fastcall function, so it may only
5278 be used in presence of a prototype.
5280 <tag/Availability/cc65
5281 <tag/See also/Other serial functions.
5290 <sect1>ser_status<label id="ser_status"><p>
5294 <tag/Function/Return the serial port status.
5295 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5296 <tag/Declaration/<tt/unsigned char __fastcall__ ser_status (unsigned char* status);/
5297 <tag/Description/Return the serial port status.
5298 <tag/Limits/<itemize>
5299 <item>The function is only available as fastcall function, so it may only
5300 be used in presence of a prototype.
5302 <tag/Availability/cc65
5303 <tag/See also/Other serial functions.
5309 <sect1>ser_uninstall<label id="ser_uninstall"><p>
5313 <tag/Function/Uninstall the currently loaded driver but do not unload it.
5314 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5315 <tag/Declaration/<tt/unsigned char ser_uninstall (void);/
5316 <tag/Description/Uninstall the currently loaded driver but do not unload it.
5317 <tag/Availability/cc65
5318 <tag/See also/Other serial functions.
5323 <sect1>ser_unload<label id="ser_unload"><p>
5327 <tag/Function/Uninstall, then unload the currently loaded driver.
5328 <tag/Header/<tt/<ref id="serial.h" name="serial.h">/
5329 <tag/Declaration/<tt/unsigned char ser_unload (void);/
5330 <tag/Description/Uninstall, then unload the currently loaded driver.
5331 <tag/Availability/cc65
5332 <tag/See also/Other serial functions.
5338 <sect1>set_brk<label id="set_brk"><p>
5342 <tag/Function/Set the break vector to a user function.
5343 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
5344 <tag/Declaration/<tt/void __fastcall__ set_brk (brk_handler func);/
5345 <tag/Description/<tt/set_brk/ allows a user program to handle breaks within the
5346 program code by letting the vector point to a user written C function. The
5347 runtime library installs a small stub that saves the registers into global
5348 variables that may be accessed (and changed) by the break handler.
5351 <item>The function is only available as fastcall function, so it may only
5352 be used in presence of a prototype.
5353 <item>The stub saves the zero page registers used by the C runtime and switches
5354 to a small break handler stack. This means that it is safe to execute C code,
5355 even if C code was interrupted. Be careful however not to use too many local
5356 variables, and do not enable stack checks for the handler function or any other
5357 function called from it.
5358 <item>The <tt/brk_pc/ variable points to the <tt/BRK/ instruction. If you want
5359 the continue with the interrupted code, you have to adjust <tt/brk_pc/,
5360 otherwise the <tt/BRK/ instruction will get executed over and over again.
5361 <item>Since <tt/set_brk/ installs an exit handler, it is not strictly necessary
5362 to call <tt/<ref id="reset_brk" name="reset_brk">/ as part of the cleanup when
5363 the program terminates.
5365 <tag/Availability/cc65
5367 <ref id="reset_brk" name="reset_brk">
5373 <sect1>set_irq<label id="set_irq"><p>
5377 <tag/Function/Set the C level interrupt request vector to the given address.
5378 <tag/Header/<tt/<ref id="6502.h" name="6502.h">/
5379 <tag/Declaration/<tt/void __fastcall__ set_irq (irq_handler f, void *stack_addr, size_t stack_size);/
5380 <tag/Description/<tt/set_irq/ allows a user program to handle interrupt requests
5381 (IRQs) within the program code by letting the vector point to a user written C
5382 function. The runtime library installs a small stub that saves the zero page
5383 registers used by the C runtime before calling the handler function and restores
5384 them after the handler function returns. Additionally the stub temporarily switches
5385 the C runtime stack to the stack area provided as parameter. If the handler function
5386 was set up to handle a "private", "exclusive" interrupt request source it must
5387 return the value <tt/IRQ_HANDLED/ if and only if it has verified that the current
5388 interrupt request actually stems from that source. In all other cases it must return
5389 the value <tt/IRQ_NOT_HANDLED/.
5392 <item>The function is only available as fastcall function, so it may only
5393 be used in presence of a prototype.
5394 <item>The stub saves the registers and zero page locations used by the C runtime
5395 and switches to the provided stack area. As a consequence, there is some
5396 runtime overhead, but it it is safe to execute C code, even if other C code
5397 was interrupted. Be careful however not to call C library functions, and do not
5398 enable stack checks for the handler function or any other function called from
5400 <item>The interrupt vector is reset on function termination, so it's not
5401 strictly necessary to call <tt/<ref id="reset_irq" name="reset_irq">/ as part
5402 of the cleanup when the program terminates.
5404 <tag/Availability/cc65
5406 <ref id="reset_brk" name="reset_brk">,
5407 <ref id="reset_irq" name="reset_irq">,
5408 <ref id="set_brk" name="set_brk">
5414 <sect1>setjmp<label id="setjmp"><p>
5418 <tag/Function/Save the context for use with <tt/longjmp/.
5419 <tag/Header/<tt/<ref id="setjmp.h" name="setjmp.h">/
5420 <tag/Declaration/<tt/int __fastcall__ setjmp (jmp_buf buf);/
5421 <tag/Description/The <tt/setjmp/ function saves the current context in <tt/buf/
5422 for subsequent use by the <tt/<ref id="longjmp" name="longjmp">/ function and
5426 <item>The function is only available as fastcall function, so it may only
5427 be used in presence of a prototype.
5428 <item><tt/setjmp/ is actually a macro as required by the ISO standard.
5429 <item><tt/setjmp/ will not save the signal context.
5431 <tag/Availability/ISO 9899
5433 <ref id="longjmp" name="longjmp">
5439 <sect1>setlocale<label id="setlocale"><p>
5443 <tag/Function/Selects a locale.
5444 <tag/Header/<tt/<ref id="locale.h" name="locale.h">/
5445 <tag/Declaration/<tt/char* __fastcall__ setlocale (int category, const char* locale);/
5446 <tag/Description/<tt/setlocale/ sets or queries the program's locale.
5449 <item>The function is only available as fastcall function, so it may only
5450 be used in presence of a prototype.
5451 <item>cc65 supports only the "C" locale, so calling this function to set a
5452 different locale has no effect.
5454 <tag/Availability/ISO 9899
5456 <ref id="localeconv" name="localeconv">,
5457 <ref id="strcoll" name="strcoll">
5458 <ref id="strxfrm" name="strxfrm">
5464 <sect1>signal<label id="signal"><p>
5468 <tag/Function/Install a signal handler.
5469 <tag/Header/<tt/<ref id="signal.h" name="signal.h">/
5470 <tag/Declaration/<tt/__sigfunc __fastcall__ signal (int sig, __sigfunc func);/
5471 <tag/Description/<tt/signal/ installs a handler for the given signal. The
5472 handler may either be a user supplied function, or one of the predefined
5473 signal handlers <tt/SIG_IGN/ or <tt/SIG_DFL/. The function returns the
5474 previous value if the signal , or the special function vector SIG_ERR in
5476 <tag/Limits/<itemize>
5477 <item>The function is only available as fastcall function, so it may only
5478 be used in presence of a prototype.
5480 <tag/Availability/ISO 9899
5482 <ref id="abort" name="abort">,
5483 <ref id="raise" name="raise">
5489 <sect1>sleep<label id="sleep"><p>
5493 <tag/Function/Sleep for a specified amount of time.
5494 <tag/Header/<tt/<ref id="unistd.h" name="unistd.h">/
5495 <tag/Declaration/<tt/void __fastcall__ sleep (unsigned seconds);/
5496 <tag/Description/The function will return after the specified number of
5497 seconds have elapsed.
5498 <tag/Limits/<itemize>
5499 <item>The function is only available as fastcall function, so it may only
5500 be used in presence of a prototype.
5502 <tag/Availability/POSIX 1003.1
5508 <sect1>slow<label id="slow"><p>
5512 <tag/Function/Switch the C128 into 1MHz mode.
5513 <tag/Header/<tt/<ref id="c128.h" name="c128.h">/
5514 <tag/Declaration/<tt/void slow (void);/
5515 <tag/Description/The function will switch the clock of the C128 to 1MHz. This
5516 will halve the speed compared to fast mode.
5517 <tag/Limits/<itemize>
5518 <item>The function is specific to the C128.
5520 <tag/Availability/C128
5522 <ref id="fast" name="fast">,
5523 <ref id="toggle_videomode" name="toggle_videomode">,
5524 <ref id="videomode" name="videomode">
5530 <sect1>srand<label id="srand"><p>
5534 <tag/Function/Initialize the pseudo random number generator.
5535 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
5536 <tag/Declaration/<tt/void __fastcall__ srand (unsigned seed);/
5537 <tag/Description/The function initializes the random number generator using
5538 the given seed. On program startup, the generator behaves as if <tt/srand/ has
5539 been called with an argument of 1.
5540 <tag/Limits/<itemize>
5541 <item>The function is only available as fastcall function, so it may only
5542 be used in presence of a prototype.
5544 <tag/Availability/ISO 9899
5546 <ref id="_randomize" name="_randomize">,
5547 <ref id="rand" name="rand">
5553 <sect1>strcasecmp<label id="strcasecmp"><p>
5557 <tag/Function/Compare two strings case insensitive.
5558 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5559 <tag/Declaration/<tt/int __fastcall__ strcasecmp (const char* s1, const char* s2);/
5560 <tag/Description/The <tt/strcasecmp/ function compares the two strings passed
5561 as parameters without case sensitivity. It returns a value that is less than
5562 zero if <tt/s1/ is less than <tt/s2/, zero if <tt/s1/ is the same as <tt/s2/,
5563 and a value greater than zero if <tt/s1/ is greater than <tt/s2/.
5564 <tag/Limits/<itemize>
5565 <item>The function is only available as fastcall function, so it may only
5566 be used in presence of a prototype.
5567 <item>The function is not available in strict ANSI mode.
5569 <tag/Availability/cc65
5571 <ref id="strcmp" name="strcmp">,
5572 <ref id="strcoll" name="strcoll">,
5573 <ref id="stricmp" name="stricmp">,
5574 <ref id="strncmp" name="strncmp">,
5575 <ref id="strxfrm" name="strxfrm">
5581 <sect1>strcat<label id="strcat"><p>
5585 <tag/Function/Concatentate two strings.
5586 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5587 <tag/Declaration/<tt/char* __fastcall__ strcat (char* s1, const char* s2);/
5588 <tag/Description/The <tt/strcat/ function appends a copy of the string
5589 pointed to by s2 (including the terminating null byte) to the end of the
5590 string pointed to by s1. The initial byte of s2 overwrites the null byte at
5592 <tag/Limits/<itemize>
5593 <item>The function is only available as fastcall function, so it may only
5594 be used in presence of a prototype.
5595 <item>If copying takes place between objects that overlap, the behaviour
5598 <tag/Availability/ISO 9899
5600 <ref id="strcpy" name="strcpy">,
5601 <ref id="strncat" name="strncat">,
5602 <ref id="strncpy" name="strncpy">
5608 <sect1>strchr<label id="strchr"><p>
5612 <tag/Function/Search for a character in a string.
5613 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5614 <tag/Declaration/<tt/char* __fastcall__ strchr (const char* s, int c);/
5615 <tag/Description/The <tt/strchr/ function locates the first occurrence of <tt/c/
5616 (converted to a char) in the string pointed to by <tt/s/. The terminating null
5617 byte is considered to be part of the string. Upon completion, the function
5618 returns a pointer to the byte, or a null pointer if the byte was not found.
5619 <tag/Limits/<itemize>
5620 <item>The function is only available as fastcall function, so it may only
5621 be used in presence of a prototype.
5623 <tag/Availability/ISO 9899
5625 <ref id="memchr" name="memchr">,
5626 <ref id="strrchr" name="strrchr">
5632 <sect1>strcmp<label id="strcmp"><p>
5636 <tag/Function/Compare two strings.
5637 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5638 <tag/Declaration/<tt/int __fastcall__ strcmp (const char* s1, const char* s2);/
5639 <tag/Description/The <tt/strcmp/ function compares the two strings passed as
5640 parameters. It returns a value that is less than zero if <tt/s1/ is less than
5641 <tt/s2/, zero if <tt/s1/ is the same as <tt/s2/, and a value greater than zero
5642 if <tt/s1/ is greater than <tt/s2/.
5643 <tag/Limits/<itemize>
5644 <item>The function is only available as fastcall function, so it may only
5645 be used in presence of a prototype.
5647 <tag/Availability/ISO 9899
5649 <ref id="strcasecmp" name="strcasecmp">,
5650 <ref id="strcoll" name="strcoll">,
5651 <ref id="stricmp" name="stricmp">,
5652 <ref id="strncmp" name="strncmp">
5653 <ref id="strxfrm" name="strxfrm">
5659 <sect1>strcoll<label id="strcoll"><p>
5663 <tag/Function/Compare two strings.
5664 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5665 <tag/Declaration/<tt/int __fastcall__ strcoll (const char* s1, const char* s2);/
5666 <tag/Description/The <tt/strcoll/ function compares the two strings passed as
5667 parameters, according to the collating sequence set by <tt/<ref id="setlocale"
5668 name="setlocale">/. It returns a value that is less than zero if <tt/s1/ is
5669 less than <tt/s2/, zero if <tt/s1/ is the same as <tt/s2/, and a value greater
5670 than zero if <tt/s1/ is greater than <tt/s2/.
5671 <tag/Limits/<itemize>
5672 <item>The function is only available as fastcall function, so it may only
5673 be used in presence of a prototype.
5675 <tag/Availability/ISO 9899
5677 <ref id="setlocale" name="setlocale">,
5678 <ref id="strcasecmp" name="strcasecmp">,
5679 <ref id="strcmp" name="strcmp">,
5680 <ref id="stricmp" name="stricmp">,
5681 <ref id="strncmp" name="strncmp">,
5682 <ref id="strxfrm" name="strxfrm">
5688 <sect1>strcpy<label id="strcpy"><p>
5692 <tag/Function/Copy a string.
5693 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5694 <tag/Declaration/<tt/char* __fastcall__ strcpy (char* s1, const char* s2);/
5695 <tag/Description/The <tt/strcpy/ function copies the string pointed to by
5696 <tt/s2/ (including the terminating null byte) into the array pointed to by
5697 <tt/s1/. The function will always return <tt/s1/.
5698 <tag/Limits/<itemize>
5699 <item>The function is only available as fastcall function, so it may only
5700 be used in presence of a prototype.
5701 <item>If copying takes place between objects that overlap, the behaviour
5704 <tag/Availability/ISO 9899
5706 <ref id="strcat" name="strcat">,
5707 <ref id="strncat" name="strncat">,
5708 <ref id="strncpy" name="strncpy">
5711 #include <string.h>
5713 static char hello[14];
5715 strcpy (hello, "Hello world!\n");
5721 <sect1>strcspn<label id="strcspn"><p>
5725 <tag/Function/Compute the length of a substring.
5726 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5727 <tag/Declaration/<tt/size_t __fastcall__ strcspn (const char* s, const char* set);/
5728 <tag/Description/The <tt/strcspn/ function computes and returns the length of
5729 the substring pointed to by <tt/s/ which does <em>not</em> consist of
5730 characters contained in the string <tt/set/.
5731 <tag/Limits/<itemize>
5732 <item>The function is only available as fastcall function, so it may only
5733 be used in presence of a prototype.
5735 <tag/Availability/ISO 9899
5737 <ref id="strspn" name="strspn">,
5738 <ref id="strstr" name="strstr">,
5739 <ref id="strtok" name="strtok">
5745 <sect1>strdup<label id="strdup"><p>
5749 <tag/Function/Allocate a copy of a string on the heap.
5750 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5751 <tag/Declaration/<tt/char* __fastcall__ strdup (const char* s);/
5752 <tag/Description/<tt/strdup/ allocates a memory block on the heap, big enough
5753 to hold a copy of <tt/s/ including the terminating zero. If the allocation
5754 fails, <tt/NULL/ is returned, otherwise <tt/s/ is copied into the allocated
5755 memory block, and a pointer to the block is returned.
5756 <tag/Limits/<itemize>
5757 <item>The function is only available as fastcall function, so it may only
5758 be used in presence of a prototype.
5759 <item>It is up to the caller to free the allocated memory block.
5761 <tag/Availability/ISO 9899
5763 <ref id="free" name="free">,
5764 <ref id="malloc" name="malloc">
5770 <sect1>strerror<label id="strerror"><p>
5774 <tag/Function/Return a string describing an error code.
5775 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5776 <tag/Declaration/<tt/char* __fastcall__ strerror (int errcode);/
5777 <tag/Description/The <tt/strerror/ function returns a string describing the
5778 given error code. If an invalid error code is passed, the string "Unknown
5779 error" is returned, and <tt/errno/ is set to <tt/EINVAL/. In all other cases,
5780 <tt/errno/ is left untouched.
5781 <tag/Limits/<itemize>
5782 <item>The function is only available as fastcall function, so it may only
5783 be used in presence of a prototype.
5784 <item>While the return type of the function is a <tt/char*/, the returned
5785 string must not be modified by the caller!
5787 <tag/Availability/ISO 9899
5789 <ref id="_stroserror" name="_stroserror">
5795 <sect1>stricmp<label id="stricmp"><p>
5799 <tag/Function/Compare two strings case insensitive.
5800 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5801 <tag/Declaration/<tt/int __fastcall__ stricmp (const char* s1, const char* s2);/
5802 <tag/Description/The <tt/stricmp/ function compares the two strings passed as
5803 parameters without case sensitivity. It returns a value that is less than zero
5804 if <tt/s1/ is less than <tt/s2/, zero if <tt/s1/ is the same as <tt/s2/, and a
5805 value greater than zero if <tt/s1/ is greater than <tt/s2/.
5806 <tag/Limits/<itemize>
5807 <item>The function is only available as fastcall function, so it may only
5808 be used in presence of a prototype.
5809 <item>The function is not available in strict ANSI mode.
5811 <tag/Availability/cc65
5813 <ref id="strcasecmp" name="strcasecmp">,
5814 <ref id="strcmp" name="strcmp">,
5815 <ref id="strcoll" name="strcoll">,
5816 <ref id="strncmp" name="strncmp">,
5817 <ref id="strxfrm" name="strxfrm">
5823 <sect1>strlen<label id="strlen"><p>
5827 <tag/Function/Return the length of a string.
5828 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5829 <tag/Declaration/<tt/size_t __fastcall__ strlen (const char* s);/
5830 <tag/Description/The <tt/strlen/ function computes the number of bytes in the
5831 string to which s points, not including the terminating null byte.
5832 <tag/Limits/<itemize>
5833 <item>The function is only available as fastcall function, so it may only
5834 be used in presence of a prototype.
5835 <item>When compiling with <tt/-Os/ (inline known standard functions), the
5836 function does not work correctly for strings with more than 255 characters.
5838 <tag/Availability/ISO 9899
5840 <ref id="strcpy" name="strcpy">
5846 <sect1>strlower<label id="strlower"><p>
5850 <tag/Function/Make a string lower case.
5851 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5852 <tag/Declaration/<tt/char* __fastcall__ strlower (char* s);/
5853 <tag/Description/The <tt/strlower/ function will apply the <tt/tolower/
5854 function to each character of a string. The function will always return <tt/s/.
5855 <tag/Limits/<itemize>
5856 <item>The function is only available as fastcall function, so it may only
5857 be used in presence of a prototype.
5858 <item>The function prototype is unavailable when compiling in strict ANSI mode.
5859 <item>An alias name for this function is <tt/strlwr/.
5861 <tag/Availability/cc65
5863 <ref id="strupper" name="strupper">,
5864 <ref id="tolower" name="tolower">
5870 <sect1>strlwr<label id="strlwr"><p>
5877 <sect1>strncat<label id="strncat"><p>
5881 <tag/Function/Concatentate two strings.
5882 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5883 <tag/Declaration/<tt/char* __fastcall__ strncat (char* s1, const char* s2, size_t n);/
5884 <tag/Description/The <tt/strncat/ function appends not more than n characters
5885 of the string pointed to by s2 to the end of the string pointed to by s1. The
5886 terminating null character at the end of s1 is overwritten. A terminating null
5887 character is appended to the result, even if not all of s2 is appended to s1.
5888 <tag/Limits/<itemize>
5889 <item>The function is only available as fastcall function, so it may only
5890 be used in presence of a prototype.
5891 <item>If copying takes place between objects that overlap, the behaviour
5894 <tag/Availability/ISO 9899
5896 <ref id="strcpy" name="strcpy">,
5897 <ref id="strncat" name="strncat">,
5898 <ref id="strncpy" name="strncpy">
5904 <sect1>strncmp<label id="strncmp"><p>
5908 <tag/Function/Compare two strings.
5909 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5910 <tag/Declaration/<tt/int __fastcall__ strncmp (const char* s1, const char* s2, size_t count);/
5911 <tag/Description/The <tt/strncmp/ function compares not more than <tt/count/
5912 characters of the two strings passed as parameters. It returns a value that is
5913 less than zero if the first <tt/count/ characters of <tt/s1/ are less than
5914 <tt/s2/, zero if they are identical, and a value greater than zero they are
5916 <tag/Limits/<itemize>
5917 <item>The function is only available as fastcall function, so it may only
5918 be used in presence of a prototype.
5920 <tag/Availability/ISO 9899
5922 <ref id="strcasecmp" name="strcasecmp">,
5923 <ref id="strcmp" name="strcmp">,
5924 <ref id="strcoll" name="strcoll">,
5925 <ref id="stricmp" name="stricmp">,
5926 <ref id="strxfrm" name="strxfrm">
5932 <sect1>strncpy<label id="strncpy"><p>
5936 <tag/Function/Copy part of a string.
5937 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5938 <tag/Declaration/<tt/char* __fastcall__ strcpy (char* s1, const char* s2, size_t n);/
5939 <tag/Description/The <tt/strncpy/ function copies not more than n bytes from
5940 the array pointed to by <tt/s2/ to the array pointed to by <tt/s1/. If the array
5941 pointed to by <tt/s2/ is a string that is shorter than n bytes, null bytes are
5942 appended to the copy in the array pointed to by <tt/s1/, until <tt/n/ bytes are
5943 written. The function will always return <tt/s1/.
5944 <tag/Limits/<itemize>
5945 <item>The function is only available as fastcall function, so it may only
5946 be used in presence of a prototype. If there is no null byte in the first <tt/n/
5947 bytes of the array pointed to by <tt/s2/, the result is not null-terminated.
5948 <item>If copying takes place between objects that overlap, the behaviour is
5951 <tag/Availability/ISO 9899
5953 <ref id="strcat" name="strcat">,
5954 <ref id="strcpy" name="strcpy">,
5955 <ref id="strncat" name="strncat">
5960 static char hello[6];
5962 strcpy (hello, "Hello world!\n", sizeof (hello) - 1);
5969 <sect1>strrchr<label id="strrchr"><p>
5973 <tag/Function/Search for a character in a string.
5974 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5975 <tag/Declaration/<tt/char* __fastcall__ strrchr (const char* s, int c);/
5976 <tag/Description/The <tt/strrchr/ function locates the last occurrence of <tt/c/
5977 (converted to a char) in the string pointed to by <tt/s/. The terminating null
5978 byte is considered to be part of the string. Upon completion, the function
5979 returns a pointer to the byte, or a null pointer if the byte was not found.
5980 <tag/Limits/<itemize>
5981 <item>The function is only available as fastcall function, so it may only
5982 be used in presence of a prototype.
5984 <tag/Availability/ISO 9899
5986 <ref id="strchr" name="strchr">
5992 <sect1>strspn<label id="strspn"><p>
5996 <tag/Function/Compute the length of a substring.
5997 <tag/Header/<tt/<ref id="string.h" name="string.h">/
5998 <tag/Declaration/<tt/size_t __fastcall__ strspn (const char* s, const char* set);/
5999 <tag/Description/The <tt/strspn/ function computes and returns the length of
6000 the substring pointed to by <tt/s/ which does consist only of characters
6001 contained in the string <tt/set/.
6002 <tag/Limits/<itemize>
6003 <item>The function is only available as fastcall function, so it may only
6004 be used in presence of a prototype.
6006 <tag/Availability/ISO 9899
6008 <ref id="strcspn" name="strcspn">,
6009 <ref id="strstr" name="strstr">
6015 <sect1>strstr<label id="strstr"><p>
6019 <tag/Function/Find a substring.
6020 <tag/Header/<tt/<ref id="string.h" name="string.h">/
6021 <tag/Declaration/<tt/char* __fastcall__ strstr (const char* str, const char* substr);/
6022 <tag/Description/<tt/strstr/ searches for the first occurance of the string
6023 <tt/substr/ within <tt/str/. If found, it returns a pointer to the copy,
6024 otherwise it returns <tt/NULL/.
6025 <tag/Limits/<itemize>
6026 <item>The function is only available as fastcall function, so it may only
6027 be used in presence of a prototype.
6029 <tag/Availability/ISO 9899
6031 <ref id="strcspn" name="strcspn">,
6032 <ref id="strspn" name="strspn">
6038 <sect1>strtok<label id="strtok"><p>
6042 <tag/Function/Break a string into tokens.
6043 <tag/Header/<tt/<ref id="string.h" name="string.h">/
6044 <tag/Declaration/<tt/char* __fastcall__ strtok (char* s1, const char* s2);/
6045 <tag/Description/<tt/strtok/ will break the string s1 into a sequence of
6046 tokens, which are delimited by characters from the string s2. The first call
6047 to <tt/strtok/ will return a pointer to the first token in the string s1.
6048 Following calls must pass a <tt/NULL/ pointer as s1 in order to get the next
6049 token in the string. Different sets of delimiters may be used for the
6050 subsequent calls to <tt/strtok/.
6051 <tag/Limits/<itemize>
6052 <item>The function is only available as fastcall function, so it may only
6053 be used in presence of a prototype.
6054 <item><tt/strtok/ will modify the string s1.
6056 <tag/Availability/ISO 9899
6058 <ref id="strcspn" name="strcspn">,
6059 <!-- <ref id="strpbrk" name="strpbrk"> -->
6065 <sect1>strxfrm<label id="strxfrm"><p>
6069 <tag/Function/Transform a string.
6070 <tag/Header/<tt/<ref id="string.h" name="string.h">/
6071 <tag/Declaration/<tt/size_t __fastcall__ strxfrm (char* s1, const char* s2, size_t n);/
6072 <tag/Description/The <tt/strxfrm/ function transforms the string pointed to by
6073 s2 and places the resulting string into the string pointed to by s1. The
6074 transformation is such that if the <tt/strcmp/ function is applied to two
6075 transformed strings, it returns a value greater than, equal to, or less than
6076 zero, corresponding to the result of the <tt/strcoll/ function applied to the
6077 same two original strings. No more than n characters are placed into the
6078 resulting array pointed to by s1, including the terminating null character.
6079 <tag/Limits/<itemize>
6080 <item><tt/s1/ and <tt/s2/ must not point to the same memory area, otherwise
6081 the behaviour is undefined.
6082 <item>If <tt/n/ is zero, <tt/s1/ may be a NULL pointer.
6083 <item>The function is only available as fastcall function, so it may only
6084 be used in presence of a prototype.
6085 <item>Since cc65 doesn't support different charcter sets, <tt/strxfrm/ will
6086 just copy s2 to s1 using <tt><ref id="strncpy" name="strncpy"></tt>.
6088 <tag/Availability/ISO 9899
6090 <ref id="strcmp" name="strcmp">,
6091 <ref id="strcoll" name="strcoll">,
6092 <ref id="strncpy" name="strncpy">
6098 <sect1>strupper<label id="strupper"><p>
6102 <tag/Function/Make a string upper case.
6103 <tag/Header/<tt/<ref id="string.h" name="string.h">/
6104 <tag/Declaration/<tt/char* __fastcall__ strupper (char* s);/
6105 <tag/Description/The <tt/strupper/ function will apply the <tt/toupper/
6106 function to each character of a string. The function will always return <tt/s/.
6107 <tag/Limits/<itemize>
6108 <item>The function is only available as fastcall function, so it may only
6109 be used in presence of a prototype.
6110 <item>The function prototype is unavailable when compiling in strict ANSI mode.
6111 <item>An alias name for this function is <tt/strupr/.
6113 <tag/Availability/cc65
6115 <ref id="strlower" name="strlower">
6116 <ref id="toupper" name="toupper">
6122 <sect1>strupr<label id="strupr"><p>
6129 <sect1>telldir<label id="telldir"><p>
6133 <tag/Function/Return the current position of a directory stream.
6134 <tag/Header/<tt/<ref id="dirent.h" name="dirent.h">/
6135 <tag/Declaration/<tt/long __fastcall__ telldir (DIR* dir);/
6136 <tag/Description/<tt/telldir/ returns the current position of a directory
6137 stream. The return value may be used in subsequent calls to
6138 <tt/<ref id="seekdir" name="seekdir">/.
6139 <tag/Limits/<itemize>
6140 <item>The function is only available as fastcall function, so it may only
6141 be used in presence of a prototype.
6143 <tag/Availability/POSIX 1003.1
6145 <ref id="seekdir" name="seekdir">,
6146 <ref id="telldir" name="telldir">
6152 <sect1>textcolor<label id="textcolor"><p>
6156 <tag/Function/Set the text color.
6157 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
6158 <tag/Declaration/<tt/unsigned char __fastcall__ textcolor (unsigned char color);/
6159 <tag/Description/The function will set a new text color. It returns the old
6160 (current) text color. Text output using any <tt/conio.h/ function will use
6161 the color set by this function.
6162 <tag/Limits/<itemize>
6163 <item>Text colors are system dependent. The function may have no effect
6164 on systems where the text color cannot be changed.
6165 <item>The function is only available as fastcall function, so it may only
6166 be used in presence of a prototype.
6168 <tag/Availability/cc65
6170 <ref id="bgcolor" name="bgcolor">,
6171 <ref id="bordercolor" name="bordercolor">
6177 <sect1>tgi_arc<label id="tgi_arc"><p>
6181 <tag/Function/Draw an elliptic arc in the current color.
6182 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6183 <tag/Declaration/<tt/void __fastcall__ tgi_arc (int x, int y,
6184 unsigned char rx, unsigned char ry, unsigned sa, unsigned ea);/
6185 <tag/Description/The function draws an elliptic arc with center at x/y and
6186 radii rx/ry using the current drawing color. The arc covers the angle
6187 between sa and ea (startangle and endangle), which must be in the range
6189 <tag/Limits/<itemize>
6190 <item>The function is only available as fastcall function, so it may only
6191 be used in presence of a prototype.
6192 <item>The function behaves unexpectedly or may crash if the angles are out
6195 <tag/Availability/cc65
6197 <ref id="tgi_bar" name="tgi_bar">,
6198 <ref id="tgi_circle" name="tgi_circle">,
6199 <ref id="tgi_ellipse" name="tgi_ellipse">,
6200 <ref id="tgi_pieslice" name="tgi_pieslice">,
6201 <ref id="tgi_setcolor" name="tgi_setcolor">
6203 /* Draw the upper half of an ellipse */
6204 tgi_setcolor(TGI_COLOR_BLUE);
6205 tgi_arc (50, 50, 40, 20, 0, 180);
6211 <sect1>tgi_bar<label id="tgi_bar"><p>
6215 <tag/Function/The function fills a rectangle on the drawpage with the current
6217 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6218 <tag/Declaration/<tt/void __fastcall__ tgi_bar (int x1, int y1, int x2, int y2);/
6219 <tag/Description/The function fills a rectangle on the drawpage with the current
6221 <tag/Limits/<itemize>
6222 <item>The function is only available as fastcall function, so it may only
6223 be used in presence of a prototype.
6225 <tag/Availability/cc65
6226 <tag/See also/Other tgi function
6228 tgi_setcolor(TGI_COLOR_GREEN);
6229 tgi_bar(10, 10, 100, 60);
6235 <sect1>tgi_circle<label id="tgi_circle"><p>
6239 <tag/Function/The function draws a circle in the current color.
6240 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6241 <tag/Declaration/<tt/void __fastcall__ tgi_circle (int x, int y, unsigned char radius);/
6242 <tag/Description/The function draws a circle in the current color.
6243 <tag/Limits/<itemize>
6244 <item>The function is only available as fastcall function, so it may only
6245 be used in presence of a prototype.
6247 <tag/Availability/cc65
6249 <ref id="tgi_arc" name="tgi_arc">,
6250 <ref id="tgi_bar" name="tgi_bar">,
6251 <ref id="tgi_ellipse" name="tgi_ellipse">,
6252 <ref id="tgi_pieslice" name="tgi_pieslice">,
6253 <ref id="tgi_setcolor" name="tgi_setcolor">
6255 tgi_setcolor(TGI_COLOR_BLACK);
6256 tgi_circle(50, 40, 40);
6262 <sect1>tgi_clear<label id="tgi_clear"><p>
6266 <tag/Function/Clear the drawpage
6267 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6268 <tag/Declaration/<tt/void tgi_clear (void);/
6269 <tag/Description/Clear the drawpage
6270 <tag/Availability/cc65
6271 <tag/See also/Other tgi functions
6277 <sect1>tgi_done<label id="tgi_done"><p>
6281 <tag/Function/End graphics mode, switch back to text mode.
6282 Will NOT uninstall or unload the driver!
6283 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6284 <tag/Declaration/<tt/void tgi_done (void);/
6285 <tag/Description/End graphics mode, switch back to text mode.
6286 Will NOT uninstall or unload the driver!
6287 <tag/Availability/cc65
6288 <tag/See also/Other tgi functions
6294 <sect1>tgi_ellipse<label id="tgi_ellipse"><p>
6298 <tag/Function/The function draws an ellipse in the current color.
6299 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6300 <tag/Declaration/<tt/void __fastcall__ tgi_ellipse (int x, int y, unsigned char rx, unsigned char ry);/
6301 <tag/Description/The function draws an ellipse at position x/y with radii
6302 rx and ry, using the current drawing color.
6303 <tag/Limits/<itemize>
6304 <item>The function is only available as fastcall function, so it may only
6305 be used in presence of a prototype.
6307 <tag/Availability/cc65
6309 <ref id="tgi_arc" name="tgi_arc">,
6310 <ref id="tgi_bar" name="tgi_bar">,
6311 <ref id="tgi_circle" name="tgi_circle">,
6312 <ref id="tgi_pieslice" name="tgi_pieslice">,
6313 <ref id="tgi_setcolor" name="tgi_setcolor">
6315 tgi_setcolor(TGI_COLOR_RED);
6316 tgi_ellipse (50, 40, 40, 20);
6322 <sect1>tgi_free_vectorfont<label id="tgi_free_vectorfont"><p>
6326 <tag/Function/Free a vector font that was previously loaded into memory.
6327 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6328 <tag/Declaration/<tt/void tgi_free_vectorfont (const tgi_vectorfont* font);/
6329 <tag/Description/Free a vector font that was previously loaded into memory.
6330 <tag/Limits/<itemize>
6331 <item>The function is only available as fastcall function, so it may only
6332 be used in presence of a prototype.
6334 <tag/Availability/cc65
6336 <ref id="tgi_load_vectorfont" name="tgi_load_vectorfont">,
6337 <ref id="tgi_install_vectorfont" name="tgi_install_vectorfont">
6343 <sect1>tgi_getaspectratio<label id="tgi_getaspectratio"><p>
6345 <quote> <descrip> <tag/Function/Return the pixel aspect ratio.
6346 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6347 <tag/Declaration/<tt/unsigned tgi_getaspectratio (void);/
6348 <tag/Description/The function returns the pixel aspect ratio for the current
6349 driver and display as an 8.8 fixed point value. It may be used to correct
6350 geometric shapes so they look correct on the display. As an example, a circle
6351 with a radius of 100 pixels may look elliptic on some driver/display
6352 combinations if the aspect ratio is not 1.00.
6353 <tag/Limits/<itemize>
6354 <item>The aspect ratio is encoded in the TGI driver which assumes a "standard"
6355 monitor for the given platform. The aspect ratio may be wrong if another
6357 <item>No TGI function will use the aspect ratio. It is up to the programmer to
6359 <item>The <ref id="tgi_setaspectratio" name="tgi_setaspectratio"> function can
6360 be used to change the aspect ratio for a loaded driver. The value is not reset
6361 by <ref id="tgi_init" name="tgi_init">, so if a driver is linked statically to
6362 an application, switching into and out of graphics mode will not restore the
6363 original aspect ratio.
6365 <tag/Availability/cc65
6367 <ref id="tgi_setaspectratio" name="tgi_setaspectratio">
6373 <sect1>tgi_getcolor<label id="tgi_getcolor"><p>
6377 <tag/Function/Return the current drawing color.
6378 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6379 <tag/Declaration/<tt/unsigned char tgi_getcolor (void);/
6380 <tag/Description/The actual color is an index to a palette. During tgi_init
6381 you will get a default palette. The number of colors depend on the platform.
6382 All platforms recognize at least TGI_COLOR_BLACK and TGI_COLOR_WHITE. But some
6383 platforms have many more predefined colors. If you paint using TGI_COLOR_GREEN
6384 and then you change the green of the palette to blue using tgi_setpalette then
6385 after this painting in TGI_COLOR_GREEN will actually be blue.
6386 <tag/Availability/cc65
6387 <tag/See also/Other tgi functions
6389 color = tgi_getcolor();
6395 <sect1>tgi_getcolorcount<label id="tgi_getcolorcount"><p>
6399 <tag/Function/Get the number of available colors.
6400 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6401 <tag/Declaration/<tt/unsigned char tgi_getcolorcount (void);/
6402 <tag/Description/Tgi platforms use indexed color palettes. This function
6403 returns the number of entries we can use in the palette.
6404 <tag/Availability/cc65
6405 <tag/See also/Other tgi functions
6407 if (tgi_getcolorcount() == 2) {
6408 printf("Only monochrome graphics is supported\n");
6415 <sect1>tgi_getdefpalette<label id="tgi_getdefpalette"><p>
6419 <tag/Function/Get the palette installed by default.
6420 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6421 <tag/Declaration/<tt/const unsigned char* tgi_getdefpalette (void);/
6422 <tag/Description/The tgi driver has a default palette that is active at startup.
6423 The named colors TGI_COLOR_BLACK, TGI_COLOR_WHITE, TGI_COLOR_RED... need this
6424 palette to work correctly.
6425 <tag/Availability/cc65
6426 <tag/See also/Other tgi functions
6432 <sect1>tgi_geterror<label id="tgi_geterror"><p>
6436 <tag/Function/Return the error code for the last operation.
6437 This will also clear the error.
6438 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6439 <tag/Declaration/<tt/unsigned char tgi_geterror (void);/
6440 <tag/Description/Return the error code for the last operation.
6441 This will also clear the error.
6442 <tag/Availability/cc65
6443 <tag/See also/Other tgi functions
6449 <sect1>tgi_geterrormsg<label id="tgi_geterrormsg"><p>
6453 <tag/Function/Get an error message describing the error.
6454 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6455 <tag/Declaration/<tt/const char* __fastcall__ tgi_geterrormsg (unsigned char code);/
6456 <tag/Description/Get an error message describing the error.
6457 <tag/Limits/<itemize>
6458 <item>The function is only available as fastcall function, so it may only
6459 be used in presence of a prototype.
6461 <tag/Availability/cc65
6462 <tag/See also/Other tgi functions
6468 <sect1>tgi_getmaxcolor<label id="tgi_getmaxcolor"><p>
6472 <tag/Function/Get the highest index of the palette.
6473 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6474 <tag/Declaration/<tt/unsigned char tgi_getmaxcolor (void);/
6475 <tag/Description/Get the highest index of the palette.
6476 <tag/Availability/cc65
6477 <tag/See also/Other tgi functions
6483 <sect1>tgi_getmaxx<label id="tgi_getmaxx"><p>
6487 <tag/Function/Get the maximum x coordinate that can be used on this screen.
6488 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6489 <tag/Declaration/<tt/unsigned tgi_getmaxx (void);/
6490 <tag/Description/Get the maximum x coordinate that can be used on this screen.
6491 <tag/Availability/cc65
6492 <tag/See also/Other tgi functions
6498 <sect1>tgi_getmaxy<label id="tgi_getmaxy"><p>
6502 <tag/Function/Get the maximum y coordinate that can be used on this screen.
6503 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6504 <tag/Declaration/<tt/unsigned tgi_getmaxy (void);/
6505 <tag/Description/Get the maximum y coordinate that can be used on this screen.
6506 <tag/Availability/cc65
6507 <tag/See also/Other tgi functions
6513 <sect1>tgi_getpagecount<label id="tgi_getpagecount"><p>
6517 <tag/Function/Return the number of screen pages available.
6518 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6519 <tag/Declaration/<tt/unsigned tgi_getpagecount (void);/
6520 <tag/Description/Return the number of screen pages available.
6521 <tag/Availability/cc65
6523 <ref id="tgi_setdrawpage" name="tgi_setdrawpage">,
6524 <ref id="tgi_setviewpage" name="tgi_setviewpage">
6530 <sect1>tgi_getpalette<label id="tgi_getpalette"><p>
6534 <tag/Function/Get the palette installed.
6535 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6536 <tag/Declaration/<tt/const unsigned char* tgi_getpalette (void);/
6537 <tag/Description/Get the palette installed.
6538 <tag/Availability/cc65
6539 <tag/See also/Other tgi functions
6545 <sect1>tgi_getpixel<label id="tgi_getpixel"><p>
6549 <tag/Function/Get the color of a pixel from the viewpage.
6550 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6551 <tag/Declaration/<tt/unsigned char __fastcall__ tgi_getpixel (int x, int y);/
6552 <tag/Description/Get the color of a pixel from the viewpage.
6553 <tag/Limits/<itemize>
6554 <item>The function is only available as fastcall function, so it may only
6555 be used in presence of a prototype.
6557 <tag/Availability/cc65
6558 <tag/See also/Other tgi functions.
6564 <sect1>tgi_getxres<label id="tgi_getxres"><p>
6568 <tag/Function/Get number of horisontal pixels on the screen.
6569 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6570 <tag/Declaration/<tt/unsigned tgi_getxres (void);/
6571 <tag/Description/Get number of horisontal pixels on the screen.
6572 This is same as tgi_maxx()+1.
6573 <tag/Availability/cc65
6574 <tag/See also/Other tgi functions.
6580 <sect1>tgi_getyres<label id="tgi_getyres"><p>
6584 <tag/Function/Get number of vertical pixels on the screen.
6585 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6586 <tag/Declaration/<tt/unsigned tgi_getyres (void);/
6587 <tag/Description/Get number of vertical pixels on the screen.
6588 This is same as tgi_maxy()+1.
6589 <tag/Availability/cc65
6590 <tag/See also/Other tgi functions.
6596 <sect1>tgi_gotoxy<label id="tgi_gotoxy"><p>
6600 <tag/Function/Set graphics cursor at x, y.
6601 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6602 <tag/Declaration/<tt/void __fastcall__ tgi_gotoxy (int x, int y);/
6603 <tag/Description/Set graphics cursor at x, y.
6604 <tag/Limits/<itemize>
6605 <item>The function is only available as fastcall function, so it may only
6606 be used in presence of a prototype.
6608 <tag/Availability/cc65
6609 <tag/See also/Other tgi functions.
6615 <sect1>tgi_init<label id="tgi_init"><p>
6619 <tag/Function/Initialize the already loaded graphics driver.
6620 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6621 <tag/Declaration/<tt/void tgi_init (void);/
6622 <tag/Description/The tgi_init function will set the default palette to the
6624 <tag/Limits/<itemize>
6625 <item><tt/tgi_init/ will not clear the screen. This allows switching between
6626 text and graphics mode on platforms that have separate memory areas for the
6627 screens. If you want the screen cleared, call <tt/<ref id="tgi_clear"
6628 name="tgi_clear">/ after <tt/tgi_init/.
6630 <tag/Availability/cc65
6631 <tag/See also/Other tgi functions.
6633 tgi_install(tgi_static_stddrv); //Include the driver statically instead of loading it.
6634 tgi_init(); //Set up the default palette and clear the screen.
6640 <sect1>tgi_install<label id="tgi_install"><p>
6644 <tag/Function/Install an already loaded driver and return an error code.
6645 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6646 <tag/Declaration/<tt/unsigned char __fastcall__ tgi_install (void* driver);/
6647 <tag/Description/The function installs a driver that was already loaded into
6648 memory (or linked statically to the program). It returns an error code
6649 (<tt/TGI_ERR_OK/ in case of success).
6650 <tag/Limits/<itemize>
6651 <item>The function is only available as fastcall function, so it may only be
6652 used in presence of a prototype.
6654 <tag/Availability/cc65
6656 <ref id="tgi_load_driver" name="tgi_load_driver">,
6657 <ref id="tgi_uninstall" name="tgi_uninstall">,
6658 <ref id="tgi_unload" name="tgi_unload">
6660 tgi_install(tgi_static_stddrv); //Include the driver statically instead of loading it.
6661 tgi_init(); //Set up the default palette and clear the screen.
6667 <sect1>tgi_install_vectorfont<label id="tgi_install_vectorfont"><p>
6671 <tag/Function/Install an already loaded driver and return an error code.
6672 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6673 <tag/Declaration/<tt/void __fastcall__ tgi_install_vectorfont (const tgi_vectorfont* font);/
6675 Install a vector font for use. More than one vector font can be loaded,
6676 but only one can be active. This function is used to tell which one. Call
6677 with a NULL pointer to uninstall the currently installed font.
6678 <tag/Limits/<itemize>
6679 <item>The function is only available as fastcall function, so it may only be
6680 used in presence of a prototype.
6682 <tag/Availability/cc65
6684 <ref id="tgi_load_vectorfont" name="tgi_load_vectorfont">,
6685 <ref id="tgi_free_vectorfont" name="tgi_free_vectorfont">
6691 <sect1>tgi_ioctl<label id="tgi_ioctl"><p>
6695 <tag/Function/Platform dependent code extensions.
6696 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6697 <tag/Declaration/<tt/unsigned __fastcall__ tgi_ioctl (unsigned char code, void* data);/
6698 <tag/Description/Some platforms have extra display hardware that is not
6699 supported by standard tgi functions. You can extend the driver to support
6700 this extra hardware using tgi_ioctl functions.
6701 <tag/Limits/<itemize>
6702 <item>The function is only available as fastcall function, so it may only
6703 be used in presence of a prototype.
6704 <item>These functions are not easily portable to other cc65 platforms.
6706 <tag/Availability/cc65
6707 <tag/See also/Other tgi functions.
6709 #define tgi_sprite(spr) tgi_ioctl(0, (void*)(spr))
6710 #define tgi_flip() tgi_ioctl(1, (void*)0)
6711 #define tgi_setbgcolor(bgcol) tgi_ioctl(2, (void*)(bgcol))
6712 #define tgi_setframerate(rate) tgi_ioctl(3, (void*)(rate))
6713 #define tgi_busy() tgi_ioctl(4, (void*)0)
6714 #define tgi_updatedisplay() tgi_ioctl(4, (void*)1)
6716 tgi_sprite(&background);
6717 tgi_setcolor(TGI_COLOR_BLUE);
6718 tgi_outttextxy(20,40,"Hello World");
6719 tgi_updatedisplay();
6726 <sect1>tgi_line<label id="tgi_line"><p>
6730 <tag/Function/Draw a line in the current drawing color.
6731 The graphics cursor will be set to x2/y2 by this call.
6732 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6733 <tag/Declaration/<tt/void __fastcall__ tgi_line (int x1, int y1, int x2, int y2);/
6734 <tag/Description/Draw a line in the current drawing color.
6735 The graphics cursor will be set to x2/y2 by this call.
6736 <tag/Limits/<itemize>
6737 <item>The function is only available as fastcall function, so it may only
6738 be used in presence of a prototype.
6740 <tag/Availability/cc65
6741 <tag/See also/Other tgi functions.
6747 <sect1>tgi_lineto<label id="tgi_lineto"><p>
6751 <tag/Function/Draw a line in the current drawing color from the graphics
6752 cursor to the new end point. The graphics cursor will be updated to x2/y2.
6753 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6754 <tag/Declaration/<tt/void __fastcall__ tgi_lineto (int x2, int y2);/
6755 <tag/Description/Draw a line in the current drawing color from the graphics
6756 cursor to the new end point. The graphics cursor will be updated to x2/y2.
6757 <tag/Limits/<itemize>
6758 <item>The function is only available as fastcall function, so it may only
6759 be used in presence of a prototype.
6761 <tag/Availability/cc65
6762 <tag/See also/Other tgi functions.
6768 <sect1>tgi_load_driver<label id="tgi_load_driver"><p>
6772 <tag/Function/Load and install the given driver.
6773 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6774 <tag/Declaration/<tt/void __fastcall__ tgi_load_driver (const char *name);/
6775 <tag/Description/Load and install the driver by name.
6776 Will just load the driver and check if loading was successful.
6777 Will not switch to graphics mode.
6778 <tag/Limits/<itemize>
6779 <item>The function is only available as fastcall function, so it may only
6780 be used in presence of a prototype.
6782 <tag/Availability/cc65
6783 <tag/See also/Other tgi functions.
6789 <sect1>tgi_load_vectorfont<label id="tgi_load_vectorfont"><p>
6793 <tag/Function/Load the given vector font.
6794 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6795 <tag/Declaration/<tt/const tgi_vectorfont* __fastcall__ tgi_load_vectorfont (const char* name);/
6797 Load a vector font into memory and return it. In case of errors, NULL is
6798 returned and an error is set, which can be retrieved using tgi_geterror.
6799 To use the font, it has to be installed using tgi_install_vectorfont.
6800 <tag/Limits/<itemize>
6801 <item>The function is only available as fastcall function, so it may only
6802 be used in presence of a prototype.
6804 <tag/Availability/cc65
6806 <ref id="tgi_install_vectorfont" name="tgi_install_vectorfont">,
6807 <ref id="tgi_free_vectorfont" name="tgi_free_vectorfont">
6813 <sect1>tgi_outtext<label id="tgi_outtext"><p>
6817 <tag/Function/Output text at the current graphics cursor position.
6818 The graphics cursor is moved to the end of the text.
6819 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6820 <tag/Declaration/<tt/void __fastcall__ tgi_outtext (const char* s);/
6821 <tag/Description/Output text at the current graphics cursor position.
6822 The graphics cursor is moved to the end of the text.
6823 <tag/Limits/<itemize>
6824 <item>The function is only available as fastcall function, so it may only
6825 be used in presence of a prototype.
6827 <tag/Availability/cc65
6828 <tag/See also/Other tgi functions.
6834 <sect1>tgi_outtextxy<label id="tgi_outtextxy"><p>
6838 <tag/Function/Output text at the given cursor position.
6839 The graphics cursor is moved to the end of the text.
6840 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6841 <tag/Declaration/<tt/void __fastcall__ tgi_outtextxy (int x, int y, const char* s);/
6842 <tag/Description/Output text at the given cursor position.
6843 The graphics cursor is moved to the end of the text.
6844 <tag/Limits/<itemize>
6845 <item>The function is only available as fastcall function, so it may only
6846 be used in presence of a prototype.
6848 <tag/Availability/cc65
6849 <tag/See also/Other tgi functions.
6855 <sect1>tgi_pieslice<label id="tgi_pieslice"><p>
6859 <tag/Function/Draw an elliptic pie slice in the current color.
6860 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6861 <tag/Declaration/<tt/void __fastcall__ tgi_pie slice (int x, int y,
6862 unsigned char rx, unsigned char ry, unsigned sa, unsigned ea);/
6863 <tag/Description/The function draws an elliptic pie slice with center at x/y
6864 and radii rx/ry using the current drawing color. The pie slice covers the angle
6865 between sa and ea (startangle and endangle), which must be in the range
6867 <tag/Limits/<itemize>
6868 <item>The function is only available as fastcall function, so it may only
6869 be used in presence of a prototype.
6870 <item>The function behaves unexpectedly or may crash if the angles are out
6873 <tag/Availability/cc65
6875 <ref id="tgi_bar" name="tgi_arc">,
6876 <ref id="tgi_bar" name="tgi_bar">,
6877 <ref id="tgi_circle" name="tgi_circle">,
6878 <ref id="tgi_ellipse" name="tgi_ellipse">,
6879 <ref id="tgi_setcolor" name="tgi_setcolor">
6881 /* Draw the closed upper half of an ellipse */
6882 tgi_setcolor(TGI_COLOR_BLUE);
6883 tgi_pieslice (50, 50, 40, 20, 0, 180);
6889 <sect1>tgi_setaspectratio<label id="tgi_setaspectratio"><p>
6891 <quote> <descrip> <tag/Function/Set the pixel aspect ratio.
6892 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6893 <tag/Declaration/<tt/void __fastcall__ tgi_setaspectratio (unsigned ratio);/
6894 <tag/Description/The function sets the pixel aspect ratio for the current
6895 driver and display. The argument is an 8.8 fixed point value. The aspect ratio
6896 may be used to correct geometric shapes so they look correct on a given
6897 display. As an example, a circle with a radius of 100 pixels may look elliptic
6898 on some driver/display combinations if the aspect ratio is not 1.00.
6899 <tag/Limits/<itemize>
6900 <item>The aspect ratio is encoded in the TGI driver which assumes a "standard"
6901 monitor for the given platform. The aspect ratio may be wrong if another
6903 <item>No TGI function will use the aspect ratio. It is up to the programmer to
6905 <item>The <tt/tgi_setaspectratio/ function can be used to change the aspect
6906 ratio for a loaded driver. The value is not reset by <ref id="tgi_init"
6907 name="tgi_init">, so if a driver is linked statically to an application,
6908 switching into and out of graphics mode will not restore the original aspect
6911 <tag/Availability/cc65
6913 <ref id="tgi_getaspectratio" name="tgi_getaspectratio">
6919 <sect1>tgi_setcolor<label id="tgi_setcolor"><p>
6923 <tag/Function/Set color to be used in future draw operations.
6924 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6925 <tag/Declaration/<tt/void __fastcall__ tgi_setcolor (unsigned char color);/
6926 <tag/Description/Set color to be used in future draw operations.
6927 <tag/Limits/<itemize>
6928 <item>The function is only available as fastcall function, so it may only
6929 be used in presence of a prototype.
6931 <tag/Availability/cc65
6932 <tag/See also/Other tgi functions.
6934 tgi_setcolor(TGI_COLOR_BLACK);
6936 tgi_setcolor(TGI_COLOR_WHITE);
6937 tgi_bar(10,10,20,20);
6942 <sect1>tgi_setdrawpage<label id="tgi_setdrawpage"><p>
6946 <tag/Function/Set the page for drawing.
6947 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6948 <tag/Declaration/<tt/void __fastcall__ tgi_setdrawpage (unsigned char page);/
6949 <tag/Description/If the drawpage and the viewpage are the same then all drawing
6950 is seen immediately as it is drawn. For double buffered games you can set the
6951 drawpage to a different page than the viewpage. This lets you draw the next
6952 screen in the background and when the screen is ready you display it.
6953 <tag/Limits/<itemize>
6954 <item>The function is only available as fastcall function, so it may only
6955 be used in presence of a prototype.
6957 <tag/Availability/cc65
6958 <tag/See also/Other tgi functions.
6961 tgi_outtextxy(10, 10, "Hello World");
6962 tgi_setviewpage(1); // Show page 1
6964 tgi_outtextxy(10, 10, "Creating next frame");
6966 tgi_setviewpage(0); // Show page 0
6971 <sect1>tgi_setpalette<label id="tgi_setpalette"><p>
6975 <tag/Function/Set the palette (not available with all drivers/hardware).
6976 Palette is a pointer to as many entries as there are colors.
6977 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6978 <tag/Declaration/<tt/void __fastcall__ tgi_setpalette (const unsigned char* palette);/
6979 <tag/Description/Set the palette (not available with all drivers/hardware).
6980 Palette is a pointer to as many entries as there are colors.
6981 <tag/Limits/<itemize>
6982 <item>The function is only available as fastcall function, so it may only
6983 be used in presence of a prototype.
6985 <tag/Availability/cc65
6986 <tag/See also/Other tgi functions.
6991 <sect1>tgi_setpixel<label id="tgi_setpixel"><p>
6995 <tag/Function/Plot a pixel on the drawpage with the current color.
6996 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
6997 <tag/Declaration/<tt/void __fastcall__ tgi_setpixel (int x, int y);/
6998 <tag/Description/Plot a pixel on the drawpage with the current color.
6999 <tag/Limits/<itemize>
7000 <item>The function is only available as fastcall function, so it may only
7001 be used in presence of a prototype.
7003 <tag/Availability/cc65
7004 <tag/See also/Other tgi functions.
7009 <sect1>tgi_setviewpage<label id="tgi_setviewpage"><p>
7013 <tag/Function/Set page to be visible on screen.
7014 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7015 <tag/Declaration/<tt/void __fastcall__ tgi_setviewpage (unsigned char page);/
7016 <tag/Description/If the drawpage and the viewpage are the same then all drawing
7017 is seen immediately as it is drawn. For double buffered games you can set the
7018 drawpage to a different page than the viewpage. This lets you draw the next
7019 screen in the background and when the screen is ready you display it.
7020 <tag/Limits/<itemize>
7021 <item>The function is only available as fastcall function, so it may only
7022 be used in presence of a prototype.
7024 <tag/Availability/cc65
7025 <tag/See also/Other tgi functions.
7028 tgi_outtextxy(10, 10, "Hello World");
7029 tgi_setviewpage(1); // Show page 1
7031 tgi_outtextxy(10, 10, "Creating next frame");
7033 tgi_setviewpage(0); // Show page 0
7038 <sect1>tgi_gettextheight<label id="tgi_gettextheight"><p>
7042 <tag/Function/Calculate the height of the text in pixels according to
7043 the current text style.
7044 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7045 <tag/Declaration/<tt/unsigned __fastcall__ tgi_gettextheight (const char* s);/
7046 <tag/Description/Calculate the height of the text in pixels according to
7047 the current text style.
7048 <tag/Limits/<itemize>
7049 <item>The function is only available as fastcall function, so it may only
7050 be used in presence of a prototype.
7052 <tag/Availability/cc65
7053 <tag/See also/Other tgi functions.
7058 <sect1>tgi_settextscale<label id="tgi_settextscale"><p>
7062 <tag/Function/Set the scaling for text output.
7063 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7064 <tag/Declaration/<tt/void __fastcall__ tgi_settextscale (unsigned width, unsigned height);/
7066 Set the scaling for text output. The scaling factors for width and height
7067 are 8.8 fixed point values. This means that $100 = 1 $200 = 2 etc.
7068 <tag/Limits/<itemize>
7069 <item>The function is only available as fastcall function, so it may only
7070 be used in presence of a prototype.
7072 <tag/Availability/cc65
7074 <ref id="tgi_settextstyle" name="tgi_settextstyle">
7079 <sect1>tgi_settextstyle<label id="tgi_settextstyle"><p>
7083 <tag/Function/Set the style for text output.
7084 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7085 <tag/Declaration/<tt/void __fastcall__ tgi_settextstyle (unsigned char magx, unsigned char magy, unsigned char dir, unsigned char font);/
7086 <tag/Description/Set the style for text output.
7087 <tag/Limits/<itemize>
7088 <item>The function is only available as fastcall function, so it may only
7089 be used in presence of a prototype.
7091 <tag/Availability/cc65
7093 <ref id="tgi_settextscale" name="tgi_settextscale">
7098 <sect1>tgi_gettextwidth<label id="tgi_gettextwidth"><p>
7102 <tag/Function/Calculate the width of the text in pixels according to the current text style.
7103 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7104 <tag/Declaration/<tt/unsigned __fastcall__ tgi_gettextwidth (const char* s);/
7105 <tag/Description/Calculate the width of the text in pixels according to the current text style.
7106 <tag/Limits/<itemize>
7107 <item>The function is only available as fastcall function, so it may only
7108 be used in presence of a prototype.
7110 <tag/Availability/cc65
7111 <tag/See also/Other tgi functions.
7116 <sect1>tgi_uninstall<label id="tgi_uninstall"><p>
7120 <tag/Function/Uninstall the currently loaded driver but do not unload it.
7121 Will call tgi_done if necessary.
7122 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7123 <tag/Declaration/<tt/void tgi_uninstall (void);/
7124 <tag/Description/Uninstall the currently loaded driver but do not unload it.
7125 Will call tgi_done if necessary.
7126 <tag/Availability/cc65
7127 <tag/See also/Other tgi functions.
7132 <sect1>tgi_unload<label id="tgi_unload"><p>
7136 <tag/Function/Uninstall, then unload the currently loaded driver.
7137 Will call tgi_done if necessary.
7138 <tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
7139 <tag/Declaration/<tt/void tgi_unload (void);/
7140 <tag/Description/Uninstall, then unload the currently loaded driver.
7141 Will call tgi_done if necessary.
7142 <tag/Availability/cc65
7143 <tag/See also/Other tgi functions.
7148 <sect1>time<label id="time"><p>
7152 <tag/Function/Get the time.
7153 <tag/Header/<tt/<ref id="time.h" name="time.h">/
7154 <tag/Declaration/<tt/time_t __fastcall__ time (time_t* t);/
7155 <tag/Description/The function returns the time since the 1970-01-01 00:00:00
7156 measured in seconds. If the pointer <tt/t/ is not <tt/NULL/, the function
7157 result will also be stored there. If no time is available, <tt/(time_t)-1/ is
7158 returned and <tt/errno/ is set to <tt/ENOSYS/.
7159 <tag/Limits/<itemize>
7160 <item>The function is only available as fastcall function, so it may
7161 only be used in presence of a prototype.
7162 <item>Many platforms supported by cc65 do not have a realtime clock, so the
7163 returned value may not be valid.
7165 <tag/Availability/ISO 9899
7167 <ref id="clock" name="clock">
7173 <sect1>toggle_videomode<label id="toggle_videomode"><p>
7177 <tag/Function/Toggle between 40 and 80 column mode.
7178 <tag/Header/<tt/<ref id="c128.h" name="c128.h">/
7179 <tag/Declaration/<tt/void toggle_videomode (void);/
7180 <tag/Description/Toggle between 40 and 80 column mode. The settings for the
7181 old mode (cursor position, color and so on) are saved and restored together
7183 <tag/Limits/<itemize>
7184 <item>The function is specific to the C128.
7185 <item>This function is deprecated. Please use <ref id="videomode"
7186 name="videomode"> instead!
7188 <tag/Availability/C128
7190 <ref id="fast" name="fast">,
7191 <ref id="slow" name="slow">,
7192 <ref id="videomode" name="videomode">
7198 <sect1>tolower<label id="tolower"><p>
7202 <tag/Function/Convert a character into its lower case representation.
7203 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
7204 <tag/Declaration/<tt/int __fastcall__ tolower (int c);/
7205 <tag/Description/The function returns the given character converted to lower
7206 case. If the given character is not a letter, it is returned unchanged.
7207 <tag/Limits/<itemize>
7208 <item>The function is only available as fastcall function, so it may
7209 only be used in presence of a prototype.
7211 <tag/Availability/ISO 9899
7213 <ref id="islower" name="islower">,
7214 <ref id="isupper" name="isupper">,
7215 <ref id="toupper" name="toupper">
7221 <sect1>toupper<label id="toupper"><p>
7225 <tag/Function/Convert a character into its upper case representation.
7226 <tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
7227 <tag/Declaration/<tt/int __fastcall__ toupper (int c);/
7228 <tag/Description/The function returns the given character converted to upper
7229 case. If the given character is not a letter, it is returned unchanged.
7230 <tag/Limits/<itemize>
7231 <item>The function is only available as fastcall function, so it may
7232 only be used in presence of a prototype.
7234 <tag/Availability/ISO 9899
7236 <ref id="islower" name="islower">,
7237 <ref id="isupper" name="isupper">,
7238 <ref id="tolower" name="tolower">
7244 <sect1>ultoa<label id="ultoa"><p>
7248 <tag/Function/Convert an unsigned long integer into a string.
7249 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
7250 <tag/Declaration/<tt/char* __fastcall__ ultoa (unsigned long val, char* buf, int radix);/
7251 <tag/Description/<tt/itoa/ converts the unsigned long integer <tt/val/ into a
7252 string using <tt/radix/ as the base.
7253 <tag/Limits/<itemize>
7254 <item>There are no provisions to prevent a buffer overflow.
7255 <item>The function is non standard, so it is not available in strict ANSI mode.
7256 You should probably use <tt/sprintf/ instead.
7257 <item>The function is only available as fastcall function, so it may only be
7258 used in presence of a prototype.
7260 <tag/Availability/cc65
7262 <ref id="atoi" name="atoi">,
7263 <ref id="atol" name="atol">,
7264 <ref id="itoa" name="itoa">,
7265 <ref id="ltoa" name="ltoa">,
7266 <ref id="utoa" name="utoa">
7272 <sect1>unlink<label id="unlink"><p>
7276 <tag/Function/Delete a file.
7277 <tag/Header/<tt/<ref id="unistd.h" name="unistd.h">/
7278 <tag/Declaration/<tt/int __fastcall__ unlink (const char* name);/
7279 <tag/Description/<tt/unlink/ deletes the file with the given name. On success,
7280 zero is returned. On error, -1 is returned and <tt/errno/ is set to an error
7281 code describing the reason for the failure.
7284 <item>The use of this function is discouraged. Please use <tt/<ref id="remove"
7285 name="remove">/ instead, which is a native ANSI C function and does the same.
7286 <item>This function is not available on all cc65 targets (depends on the
7287 availability of file I/O).
7288 <item>The function is only available as fastcall function, so it may only
7289 be used in presence of a prototype.
7290 <item>Instead of <tt/unlink/, <tt/<ref id="remove" name="remove">/ should be
7291 used, which has the same semantics, but is more portable, because it conforms
7292 to the ISO C standard.
7294 <tag/Availability/POSIX 1003.1
7296 <ref id="remove" name="remove">
7299 #include <stdio.h>
7300 #include <unistd.h>
7302 #define FILENAME "helloworld"
7304 if (unlink (FILENAME) == 0) {
7305 printf ("We deleted %s successfully\n", FILENAME);
7307 printf ("There was a problem deleting %s\n", FILENAME);
7314 <sect1>utoa<label id="utoa"><p>
7318 <tag/Function/Convert an unsigned integer into a string.
7319 <tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
7320 <tag/Declaration/<tt/char* __fastcall__ utoa (unsigned val, char* buf, int radix);/
7321 <tag/Description/<tt/itoa/ converts the unsigned integer <tt/val/ into a string
7322 using <tt/radix/ as the base.
7323 <tag/Limits/<itemize>
7324 <item>There are no provisions to prevent a buffer overflow.
7325 <item>The function is non standard, so it is not available in strict ANSI mode.
7326 You should probably use <tt/sprintf/ instead.
7327 <item>The function is only available as fastcall function, so it may only be
7328 used in presence of a prototype.
7330 <tag/Availability/cc65
7332 <ref id="atoi" name="atoi">,
7333 <ref id="atol" name="atol">,
7334 <ref id="itoa" name="itoa">,
7335 <ref id="ltoa" name="ltoa">,
7336 <ref id="ultoa" name="ultoa">
7342 <sect1>vcprintf<label id="vcprintf"><p>
7346 <tag/Function/Formatted output to the console.
7347 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
7348 <tag/Declaration/<tt/int __fastcall__ vcprintf (const char* format, va_list ap);/
7349 <tag/Description/The arguments specified as a <tt/va_list/ are converted to
7350 text where necessary and formatted according to the format string given. The
7351 resulting string is output to the console. <tt/vcprintf/ supports the same
7352 format specifiers as <tt/vprintf/. <!-- <tt/<ref id="vprintf" name="vprintf">/. -->
7353 <tag/Limits/<itemize>
7354 <item>Like all other <tt/conio/ output functions, <tt/vcprintf/ distinguishes
7355 between <tt/\r/ and <tt/\n/.
7356 <item>The function is only available as fastcall function, so it may only be
7357 used in presence of a prototype.
7359 <tag/Availability/cc65
7361 <ref id="cprintf" name="cprintf">,
7362 <ref id="cputc" name="cputc">,
7363 <ref id="cputcxy" name="cputcxy">,
7364 <ref id="cputs" name="cputs">,
7365 <ref id="cputsxy" name="cputsxy">
7371 <sect1>videomode<label id="videomode"><p>
7375 <tag/Function/Switch to either 40 or 80 column mode.
7376 <tag/Header/<tt/<ref id="apple2enh.h" name="apple2enh.h">,
7377 <ref id="c128.h" name="c128.h">/
7378 <tag/Declaration/<tt/unsigned __fastcall__ videomode (unsigned Mode);/
7379 <tag/Description/Switch to 40 or 80 column mode depending on the argument. If
7380 the requested mode is already active, nothing happens. The old mode is returned
7382 <tag/Limits/<itemize>
7383 <item>The function is specific to the C128 and enhanced Apple //e.
7384 <item>This function replaces <ref id="toggle_videomode"
7385 name="toggle_videomode">.
7386 <item>The function is only available as fastcall function, so it may only be
7387 used in presence of a prototype.
7389 <tag/Availability/C128 and enhanced Apple //e
7391 <ref id="fast" name="fast">,
7392 <ref id="slow" name="slow">,
7393 <ref id="toggle_videomode" name="toggle_videomode">
7399 <sect1>wherex<label id="wherex"><p>
7403 <tag/Function/Return the current X position of the text mode cursor.
7404 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
7405 <tag/Declaration/<tt/unsigned char wherex (void);/
7406 <tag/Description/The function returns the current X position of the text mode
7407 cursor. Zero is returned for the leftmost screen position.
7408 <tag/Availability/cc65
7410 <ref id="gotox" name="gotox">,
7411 <ref id="gotoy" name="gotoy">,
7412 <ref id="gotoxy" name="gotoxy">,
7413 <ref id="wherey" name="wherey">
7419 <sect1>wherey<label id="wherey"><p>
7423 <tag/Function/Return the current Y position of the text mode cursor.
7424 <tag/Header/<tt/<ref id="conio.h" name="conio.h">/
7425 <tag/Declaration/<tt/unsigned char wherey (void);/
7426 <tag/Description/The function returns the current Y position of the text mode
7427 cursor. Zero is returned for the uppermost screen position.
7428 <tag/Availability/cc65
7430 <ref id="gotox" name="gotox">,
7431 <ref id="gotoy" name="gotoy">,
7432 <ref id="gotoxy" name="gotoxy">,
7433 <ref id="wherex" name="wherex">