1 /*****************************************************************************/
5 /* Atari system specific definitions */
9 /* (C) 2000-2019 Mark Keates <markk@dendrite.co.uk> */
10 /* Freddy Offenga <taf_offenga@yahoo.com> */
11 /* Christian Groessler <chris@groessler.org> */
12 /* Bill Kendrick <nbs@sonic.net> */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
41 /* Check for errors */
42 #if !defined(__ATARI__)
43 # error This module may only be used when compiling for the Atari!
48 /*****************************************************************************/
50 /*****************************************************************************/
52 #define CH_DELCHR 0xFE /* delete char under the cursor */
56 #define CH_CURS_DOWN 29
57 #define CH_CURS_LEFT 30
58 #define CH_CURS_RIGHT 31
60 #define CH_TAB 0x7F /* tabulator */
61 #define CH_EOL 0x9B /* end-of-line marker */
62 #define CH_CLR 0x7D /* clear screen */
63 #define CH_BEL 0xFD /* bell */
64 #define CH_DEL 0x7E /* back space (delete char to the left) */
65 #define CH_RUBOUT 0x7E /* back space (old, deprecated) */
66 #define CH_DELLINE 0x9C /* delete line */
67 #define CH_INSLINE 0x9D /* insert line */
69 /* These are defined to be Atari + NumberKey */
81 #define CH_ULCORNER 0x11
82 #define CH_URCORNER 0x05
83 #define CH_LLCORNER 0x1A
84 #define CH_LRCORNER 0x03
94 /*****************************************************************************/
95 /* Color definitions */
96 /*****************************************************************************/
98 /* Make a GTIA color value */
99 #define _gtia_mkcolor(hue,lum) (((hue) << 4) | ((lum) << 1))
101 /* Luminance values go from 0 (black) to 7 (white) */
104 /* (These can vary depending on TV standard (NTSC vs PAL),
105 ** tint potentiometer settings, TV tint settings, emulator palette, etc.)
109 #define HUE_GOLDORANGE 2
110 #define HUE_REDORANGE 3
112 #define HUE_MAGENTA 5
117 #define HUE_BLUEGREEN 10
118 #define HUE_BLUEGREEN2 11
120 #define HUE_YELLOWGREEN 13
121 #define HUE_YELLOW 14
122 #define HUE_YELLOWRED 15
124 /* Color defines, similar to c64 colors (untested) */
125 /* Note that the conio color implementation is monochrome
126 ** (bgcolor and textcolor are only placeholders)
128 /* Use the defines with the setcolor() or _atari_xxxcolor() functions */
129 #define COLOR_BLACK _gtia_mkcolor(HUE_GREY,0)
130 #define COLOR_WHITE _gtia_mkcolor(HUE_GREY,7)
131 #define COLOR_RED _gtia_mkcolor(HUE_REDORANGE,1)
132 #define COLOR_CYAN _gtia_mkcolor(HUE_CYAN,3)
133 #define COLOR_VIOLET _gtia_mkcolor(HUE_PURPLE,4)
134 #define COLOR_GREEN _gtia_mkcolor(HUE_GREEN,2)
135 #define COLOR_BLUE _gtia_mkcolor(HUE_BLUE,2)
136 #define COLOR_YELLOW _gtia_mkcolor(HUE_YELLOW,7)
137 #define COLOR_ORANGE _gtia_mkcolor(HUE_ORANGE,5)
138 #define COLOR_BROWN _gtia_mkcolor(HUE_YELLOW,2)
139 #define COLOR_LIGHTRED _gtia_mkcolor(HUE_REDORANGE,6)
140 #define COLOR_GRAY1 _gtia_mkcolor(HUE_GREY,2)
141 #define COLOR_GRAY2 _gtia_mkcolor(HUE_GREY,3)
142 #define COLOR_LIGHTGREEN _gtia_mkcolor(HUE_GREEN,6)
143 #define COLOR_LIGHTBLUE _gtia_mkcolor(HUE_BLUE,6)
144 #define COLOR_GRAY3 _gtia_mkcolor(HUE_GREY,5)
146 /* TGI color defines */
147 #define TGI_COLOR_BLACK COLOR_BLACK
148 #define TGI_COLOR_WHITE COLOR_WHITE
149 #define TGI_COLOR_RED COLOR_RED
150 #define TGI_COLOR_CYAN COLOR_CYAN
151 #define TGI_COLOR_VIOLET COLOR_VIOLET
152 #define TGI_COLOR_GREEN COLOR_GREEN
153 #define TGI_COLOR_BLUE COLOR_BLUE
154 #define TGI_COLOR_YELLOW COLOR_YELLOW
155 #define TGI_COLOR_ORANGE COLOR_ORANGE
156 #define TGI_COLOR_BROWN COLOR_BROWN
157 #define TGI_COLOR_LIGHTRED COLOR_LIGHTRED
158 #define TGI_COLOR_GRAY1 COLOR_GRAY1
159 #define TGI_COLOR_GRAY2 COLOR_GRAY2
160 #define TGI_COLOR_LIGHTGREEN COLOR_LIGHTGREEN
161 #define TGI_COLOR_LIGHTBLUE COLOR_LIGHTBLUE
162 #define TGI_COLOR_GRAY3 COLOR_GRAY3
165 /*****************************************************************************/
166 /* Masks for joy_read */
167 /*****************************************************************************/
169 #define JOY_UP_MASK 0x01
170 #define JOY_DOWN_MASK 0x02
171 #define JOY_LEFT_MASK 0x04
172 #define JOY_RIGHT_MASK 0x08
173 #define JOY_BTN_1_MASK 0x10
175 #define JOY_FIRE_MASK JOY_BTN_1_MASK
176 #define JOY_FIRE(v) ((v) & JOY_FIRE_MASK)
179 /*****************************************************************************/
180 /* Keyboard values returned by kbcode / CH */
181 /*****************************************************************************/
183 #define KEY_NONE ((unsigned char) 0xFF)
185 #define KEY_0 ((unsigned char) 0x32)
186 #define KEY_1 ((unsigned char) 0x1F)
187 #define KEY_2 ((unsigned char) 0x1E)
188 #define KEY_3 ((unsigned char) 0x1A)
189 #define KEY_4 ((unsigned char) 0x18)
190 #define KEY_5 ((unsigned char) 0x1D)
191 #define KEY_6 ((unsigned char) 0x1B)
192 #define KEY_7 ((unsigned char) 0x33)
193 #define KEY_8 ((unsigned char) 0x35)
194 #define KEY_9 ((unsigned char) 0x30)
196 #define KEY_A ((unsigned char) 0x3F)
197 #define KEY_B ((unsigned char) 0x15)
198 #define KEY_C ((unsigned char) 0x12)
199 #define KEY_D ((unsigned char) 0x3A)
200 #define KEY_E ((unsigned char) 0x2A)
201 #define KEY_F ((unsigned char) 0x38)
202 #define KEY_G ((unsigned char) 0x3D)
203 #define KEY_H ((unsigned char) 0x39)
204 #define KEY_I ((unsigned char) 0x0D)
205 #define KEY_J ((unsigned char) 0x01)
206 #define KEY_K ((unsigned char) 0x05)
207 #define KEY_L ((unsigned char) 0x00)
208 #define KEY_M ((unsigned char) 0x25)
209 #define KEY_N ((unsigned char) 0x23)
210 #define KEY_O ((unsigned char) 0x08)
211 #define KEY_P ((unsigned char) 0x0A)
212 #define KEY_Q ((unsigned char) 0x2F)
213 #define KEY_R ((unsigned char) 0x28)
214 #define KEY_S ((unsigned char) 0x3E)
215 #define KEY_T ((unsigned char) 0x2D)
216 #define KEY_U ((unsigned char) 0x0B)
217 #define KEY_V ((unsigned char) 0x10)
218 #define KEY_W ((unsigned char) 0x2E)
219 #define KEY_X ((unsigned char) 0x16)
220 #define KEY_Y ((unsigned char) 0x2B)
221 #define KEY_Z ((unsigned char) 0x17)
223 #define KEY_COMMA ((unsigned char) 0x20)
224 #define KEY_PERIOD ((unsigned char) 0x22)
225 #define KEY_SLASH ((unsigned char) 0x26)
226 #define KEY_SEMICOLON ((unsigned char) 0x02)
227 #define KEY_PLUS ((unsigned char) 0x06)
228 #define KEY_ASTERISK ((unsigned char) 0x07)
229 #define KEY_DASH ((unsigned char) 0x0E)
230 #define KEY_EQUALS ((unsigned char) 0x0F)
231 #define KEY_LESSTHAN ((unsigned char) 0x36)
232 #define KEY_GREATERTHAN ((unsigned char) 0x37)
234 #define KEY_ESC ((unsigned char) 0x1C)
235 #define KEY_TAB ((unsigned char) 0x2C)
236 #define KEY_SPACE ((unsigned char) 0x21)
237 #define KEY_RETURN ((unsigned char) 0x0C)
238 #define KEY_DELETE ((unsigned char) 0x34)
239 #define KEY_CAPS ((unsigned char) 0x3C)
240 #define KEY_INVERSE ((unsigned char) 0x27)
241 #define KEY_HELP ((unsigned char) 0x11)
243 /* Function keys only exist on the 1200XL model. */
244 #define KEY_F1 ((unsigned char) 0x03)
245 #define KEY_F2 ((unsigned char) 0x04)
246 #define KEY_F3 ((unsigned char) 0x13)
247 #define KEY_F4 ((unsigned char) 0x14)
249 /* N.B. Cannot read Ctrl key alone */
250 #define KEY_CTRL ((unsigned char) 0x80)
252 /* N.B. Cannot read Shift key alone via KBCODE;
253 ** instead, check "Shfit key press" bit of SKSTAT register.
254 ** Also, no way to tell left Shift from right Shift.
256 #define KEY_SHIFT ((unsigned char) 0x40)
260 ** (Other combinations are possible, including Shift+Ctrl+key,
261 ** though not all such combinations are available.)
264 #define KEY_EXCLAMATIONMARK (KEY_1 | KEY_SHIFT)
265 #define KEY_QUOTE (KEY_2 | KEY_SHIFT)
266 #define KEY_HASH (KEY_3 | KEY_SHIFT)
267 #define KEY_DOLLAR (KEY_4 | KEY_SHIFT)
268 #define KEY_PERCENT (KEY_5 | KEY_SHIFT)
269 #define KEY_AMPERSAND (KEY_6 | KEY_SHIFT)
270 #define KEY_APOSTROPHE (KEY_7 | KEY_SHIFT)
271 #define KEY_AT (KEY_8 | KEY_SHIFT)
272 #define KEY_OPENINGPARAN (KEY_9 | KEY_SHIFT)
273 #define KEY_CLOSINGPARAN (KEY_0 | KEY_SHIFT)
274 #define KEY_UNDERLINE (KEY_DASH | KEY_SHIFT)
275 #define KEY_BAR (KEY_EQUALS | KEY_SHIFT)
276 #define KEY_COLON (KEY_SEMICOLON | KEY_SHIFT)
277 #define KEY_BACKSLASH (KEY_PLUS | KEY_SHIFT)
278 #define KEY_CIRCUMFLEX (KEY_ASTERISK | KEY_SHIFT)
279 #define KEY_OPENINGBRACKET (KEY_COMMA | KEY_SHIFT)
280 #define KEY_CLOSINGBRACKET (KEY_PERIOD | KEY_SHIFT)
281 #define KEY_QUESTIONMARK (KEY_SLASH | KEY_SHIFT)
282 #define KEY_CLEAR (KEY_LESSTHAN | KEY_SHIFT)
283 #define KEY_INSERT (KEY_GREATERTHAN | KEY_SHIFT)
285 #define KEY_UP (KEY_UNDERLINE | KEY_CTRL)
286 #define KEY_DOWN (KEY_EQUALS | KEY_CTRL)
287 #define KEY_LEFT (KEY_PLUS | KEY_CTRL)
288 #define KEY_RIGHT (KEY_ASTERISK | KEY_CTRL)
291 /*****************************************************************************/
292 /* Color register functions */
293 /*****************************************************************************/
295 extern void __fastcall__ _setcolor (unsigned char color_reg, unsigned char hue, unsigned char luminace);
296 extern void __fastcall__ _setcolor_low (unsigned char color_reg, unsigned char color_value);
297 extern unsigned char __fastcall__ _getcolor (unsigned char color_reg);
299 /*****************************************************************************/
300 /* Other screen functions */
301 /*****************************************************************************/
303 extern int __fastcall__ _graphics (unsigned char mode); /* mode value same as in BASIC */
304 extern void __fastcall__ _scroll (signed char numlines);
305 /* numlines > 0 scrolls up */
306 /* numlines < 0 scrolls down */
309 /*****************************************************************************/
310 /* Misc. functions */
311 /*****************************************************************************/
313 extern unsigned char get_ostype(void); /* get ROM version */
314 extern unsigned char get_tv(void); /* get TV system */
315 extern void _save_vecs(void); /* save system vectors */
316 extern void _rest_vecs(void); /* restore system vectors */
317 extern char *_getdefdev(void); /* get default floppy device */
318 extern unsigned char _is_cmdline_dos(void); /* does DOS support command lines */
321 /*****************************************************************************/
322 /* Global variables */
323 /*****************************************************************************/
325 extern unsigned char _dos_type; /* the DOS flavour */
327 extern void atr130_emd[];
328 extern void atrstd_joy[]; /* referred to by joy_static_stddrv[] */
329 extern void atrmj8_joy[];
330 extern void atrjoy_mou[];
331 extern void atrst_mou[]; /* referred to by mouse_static_stddrv[] */
332 extern void atrami_mou[];
333 extern void atrtrk_mou[];
334 extern void atrtt_mou[];
335 extern void atrrdev_ser[];
336 extern void atr3_tgi[];
337 extern void atr4_tgi[];
338 extern void atr5_tgi[];
339 extern void atr6_tgi[];
340 extern void atr7_tgi[];
341 extern void atr8_tgi[]; /* referred to by tgi_static_stddrv[] */
342 extern void atr8p2_tgi[];
343 extern void atr9_tgi[];
344 extern void atr9p2_tgi[];
345 extern void atr10_tgi[];
346 extern void atr10p2_tgi[];
347 extern void atr11_tgi[];
348 extern void atr14_tgi[];
349 extern void atr15_tgi[];
350 extern void atr15p2_tgi[];
352 extern void atrx130_emd[];
353 extern void atrxstd_joy[]; /* referred to by joy_static_stddrv[] */
354 extern void atrxmj8_joy[];
355 extern void atrxjoy_mou[];
356 extern void atrxst_mou[]; /* referred to by mouse_static_stddrv[] */
357 extern void atrxami_mou[];
358 extern void atrxtrk_mou[];
359 extern void atrxtt_mou[];
360 extern void atrxrdev_ser[];
361 extern void atrx3_tgi[];
362 extern void atrx4_tgi[];
363 extern void atrx5_tgi[];
364 extern void atrx6_tgi[];
365 extern void atrx7_tgi[];
366 extern void atrx8_tgi[]; /* referred to by tgi_static_stddrv[] */
367 extern void atrx8p2_tgi[];
368 extern void atrx9_tgi[];
369 extern void atrx9p2_tgi[];
370 extern void atrx10_tgi[];
371 extern void atrx10p2_tgi[];
372 extern void atrx11_tgi[];
373 extern void atrx14_tgi[];
374 extern void atrx15_tgi[];
375 extern void atrx15p2_tgi[];
379 /*****************************************************************************/
380 /* get_ostype return value defines (for explanation, see ostype.s) */
381 /*****************************************************************************/
384 #define AT_OS_TYPE_MAIN 7
385 #define AT_OS_TYPE_MINOR (7 << 3)
386 /* AT_OS_TYPE_MAIN values */
387 #define AT_OS_UNKNOWN 0
388 #define AT_OS_400800 1
389 #define AT_OS_1200XL 2
391 /* AS_OS_TYPE_MINOR values */
392 /* for 400/800 remember this are the ROM versions */
393 /* to check whether the hw is PAL or NTSC, use get_tv() */
394 #define AT_OS_400800PAL_A 1
395 #define AT_OS_400800PAL_B 2
396 #define AT_OS_400800NTSC_A 1
397 #define AT_OS_400800NTSC_B 2
398 #define AT_OS_1200_10 1
399 #define AT_OS_1200_11 2
400 #define AT_OS_XLXE_1 1
401 #define AT_OS_XLXE_2 2
402 #define AT_OS_XLXE_3 3
403 #define AT_OS_XLXE_4 4
406 /*****************************************************************************/
407 /* get_tv return values */
408 /*****************************************************************************/
414 /*****************************************************************************/
415 /* valid _dos_type values */
416 /*****************************************************************************/
428 /*****************************************************************************/
429 /* Define hardware and where they're mapped in memory */
430 /*****************************************************************************/
433 #define GTIA_READ (*(struct __gtia_read*)0xD000)
434 #define GTIA_WRITE (*(struct __gtia_write*)0xD000)
439 #define POKEY_READ (*(struct __pokey_read*)0xD200)
440 #define POKEY_WRITE (*(struct __pokey_write*)0xD200)
443 #define PIA (*(struct __pia*)0xD300)
446 #define ANTIC (*(struct __antic*)0xD400)
449 /*****************************************************************************/
450 /* Shadow registers for hardware registers */
451 /*****************************************************************************/
454 #define STRIG0 (*(unsigned char*)0x284) /* TRIG0 */
455 #define STRIG1 (*(unsigned char*)0x285) /* TRIG1 */
456 #define STRIG2 (*(unsigned char*)0x286) /* TRIG2 */
457 #define STRIG3 (*(unsigned char*)0x287) /* TRIG3 */
458 #define PCOLR0 (*(unsigned char*)0x2C0) /* COLPM0 */
459 #define PCOLR1 (*(unsigned char*)0x2C1) /* COLPM1 */
460 #define PCOLR2 (*(unsigned char*)0x2C2) /* COLPM2 */
461 #define PCOLR3 (*(unsigned char*)0x2C3) /* COLPM3 */
462 #define COLOR0 (*(unsigned char*)0x2C4) /* COLPF0 */
463 #define COLOR1 (*(unsigned char*)0x2C5) /* COLPF1 */
464 #define COLOR2 (*(unsigned char*)0x2C6) /* COLPF2 */
465 #define COLOR3 (*(unsigned char*)0x2C7) /* COLPF3 */
466 #define COLOR4 (*(unsigned char*)0x2C8) /* COLPBK */
467 #define GPRIOR (*(unsigned char*)0x264) /* PRIOR */
470 #define SDMCTL (*(unsigned char*)0x22F) /* DMACTL */
471 #define CHACT (*(unsigned char*)0x2F3) /* CHACTL */
472 #define SDLSTL (*(unsigned char*)0x230) /* DLISTL */
473 #define SDLSTH (*(unsigned char*)0x231) /* DLISTH */
474 #define SDLST (*(unsigned int*)0x230) /* DLISTL/H together */
475 #define CHBAS (*(unsigned char*)0x2F4) /* CHBASE */
476 #define LPENH (*(unsigned char*)0x233) /* PENH */
477 #define LPENV (*(unsigned char*)0x234) /* PENV */
480 #define PADDL0 (*(unsigned char*)0x270) /* POT0 */
481 #define PADDL1 (*(unsigned char*)0x271) /* POT1 */
482 #define PADDL2 (*(unsigned char*)0x272) /* POT2 */
483 #define PADDL3 (*(unsigned char*)0x273) /* POT3 */
484 #define PADDL4 (*(unsigned char*)0x274) /* POT4 */
485 #define PADDL5 (*(unsigned char*)0x275) /* POT5 */
486 #define PADDL6 (*(unsigned char*)0x276) /* POT6 */
487 #define PADDL7 (*(unsigned char*)0x277) /* POT7 */
488 #define CH (*(unsigned char*)0x2FC) /* KBCODE */
489 #define POKMSK (*(unsigned char*)0x10) /* IRQEN */
492 #define STICK0 (*(unsigned char*)0x278) /* PORTA for controller port 1 */
493 #define STICK1 (*(unsigned char*)0x279) /* PORTA for controller port 2 */
494 #define STICK2 (*(unsigned char*)0x27A) /* PORTB for controller port 3 */
495 #define STICK3 (*(unsigned char*)0x27B) /* PORTB for controller port 4 */
496 #define PTRIG0 (*(unsigned char*)0x27C) /* PORTA for controller port 1, paddle 1 */
497 #define PTRIG1 (*(unsigned char*)0x27D) /* PORTA for controller port 1, paddle 2 */
498 #define PTRIG2 (*(unsigned char*)0x27E) /* PORTA for controller port 1, paddle 3 */
499 #define PTRIG3 (*(unsigned char*)0x27F) /* PORTA for controller port 1, paddle 4 */
500 #define PTRIG4 (*(unsigned char*)0x280) /* PORTA for controller port 2, paddle 5 */
501 #define PTRIG5 (*(unsigned char*)0x281) /* PORTA for controller port 2, paddle 6 */
502 #define PTRIG6 (*(unsigned char*)0x282) /* PORTA for controller port 2, paddle 7 */
503 #define PTRIG7 (*(unsigned char*)0x283) /* PORTA for controller port 2, paddle 8 */
506 /*****************************************************************************/
507 /* Device control block */
508 /*****************************************************************************/
511 unsigned char device; /* device id */
512 unsigned char unit; /* unit number */
513 unsigned char command; /* command */
514 unsigned char status; /* command type / status return */
515 void *buffer; /* pointer to buffer */
516 unsigned char timeout; /* device timeout in seconds */
517 unsigned char unused;
518 unsigned int xfersize; /* # of bytes to transfer */
519 unsigned char aux1; /* 1st command auxiliary byte */
520 unsigned char aux2; /* 2nd command auxiliary byte */
522 #define DCB (*(struct __dcb *)0x300)
525 /*****************************************************************************/
526 /* I/O control block */
527 /*****************************************************************************/
530 unsigned char handler; /* handler index number (0xff free) */
531 unsigned char drive; /* device number (drive) */
532 unsigned char command; /* command */
533 unsigned char status; /* status of last operation */
534 void *buffer; /* pointer to buffer */
535 void *put_byte; /* pointer to device's PUT BYTE routine */
536 unsigned int buflen; /* length of buffer */
537 unsigned char aux1; /* 1st auxiliary byte */
538 unsigned char aux2; /* 2nd auxiliary byte */
539 unsigned char aux3; /* 3rd auxiliary byte */
540 unsigned char aux4; /* 4th auxiliary byte */
541 unsigned char aux5; /* 5th auxiliary byte */
542 unsigned char spare; /* spare byte */
544 #define ZIOCB (*(struct __iocb *)0x20) /* zero page IOCB */
545 #define IOCB (*(struct __iocb *)0x340) /* system IOCB buffers */
547 /* IOCB Command Codes */
548 #define IOCB_OPEN 0x03 /* open */
549 #define IOCB_GETREC 0x05 /* get record */
550 #define IOCB_GETCHR 0x07 /* get character(s) */
551 #define IOCB_PUTREC 0x09 /* put record */
552 #define IOCB_PUTCHR 0x0B /* put character(s) */
553 #define IOCB_CLOSE 0x0C /* close */
554 #define IOCB_STATIS 0x0D /* status */
555 #define IOCB_SPECIL 0x0E /* special */
556 #define IOCB_DRAWLN 0x11 /* draw line */
557 #define IOCB_FILLIN 0x12 /* draw line with right fill */
558 #define IOCB_RENAME 0x20 /* rename disk file */
559 #define IOCB_DELETE 0x21 /* delete disk file */
560 #define IOCB_LOCKFL 0x23 /* lock file (set to read-only) */
561 #define IOCB_UNLOCK 0x24 /* unlock file */
562 #define IOCB_POINT 0x25 /* point sector */
563 #define IOCB_NOTE 0x26 /* note sector */
564 #define IOCB_GETFL 0x27 /* get file length */
565 #define IOCB_CHDIR_MYDOS 0x29 /* change directory (MyDOS) */
566 #define IOCB_MKDIR 0x2A /* make directory (MyDOS/SpartaDOS) */
567 #define IOCB_RMDIR 0x2B /* remove directory (SpartaDOS) */
568 #define IOCB_CHDIR_SPDOS 0x2C /* change directory (SpartaDOS) */
569 #define IOCB_GETCWD 0x30 /* get current directory (MyDOS/SpartaDOS) */
570 #define IOCB_FORMAT 0xFE /* format */