From e3cf61b56940a5ae5b99b19484eff4791a313fb1 Mon Sep 17 00:00:00 2001 From: cuz Date: Mon, 21 Nov 2005 20:59:51 +0000 Subject: [PATCH] Small changes and a whole new doc file for the enhanced apple //e contributed by Oliver Schmidt. git-svn-id: svn://svn.cc65.org/cc65/trunk@3666 b7a2c559-68d2-44c3-8de9-860c34a00d81 --- doc/Makefile | 3 +- doc/apple2.sgml | 21 ++-- doc/apple2enh.sgml | 246 +++++++++++++++++++++++++++++++++++++++++++++ doc/index.sgml | 3 + 4 files changed, 259 insertions(+), 14 deletions(-) create mode 100644 doc/apple2enh.sgml diff --git a/doc/Makefile b/doc/Makefile index 7b295c31f..9f26c13dc 100644 --- a/doc/Makefile +++ b/doc/Makefile @@ -17,6 +17,7 @@ #TXT_OPTIONS=-f -m SGML = apple2.sgml \ + apple2enh.sgml \ ar65.sgml \ atari.sgml \ atmos.sgml \ @@ -116,7 +117,7 @@ coding.html: coding.sgml # funcref.sgml's third section is huge. # So, funcref.html is split into sub-section files. -# +# funcref.html: funcref.sgml sgml2html --split=2 $(BUTTONS) $< diff --git a/doc/apple2.sgml b/doc/apple2.sgml index 4ed4d0b6a..dc48a8939 100644 --- a/doc/apple2.sgml +++ b/doc/apple2.sgml @@ -130,9 +130,9 @@ you cannot do it, it just means that there's no help. Gives access to 12KB RAM (48 pages of 256 bytes each) on the - Apple ][ language card. The driver was contributed by - Stefan Haubenthal. Note that this driver is incompatible with any DOS using - the language card memory! + Apple2 language card. The driver was contributed by Stefan Haubenthal. + Note that this driver is incompatible with any DOS using the language + card memory!

@@ -159,11 +159,11 @@ does not exist). - Driver for the Apple ][ Super Serial Card. Supports up to - 19200 baud, hardware flow control (RTS/CTS) and interrupt driven receives. - Note that because of the peculiarities of the 6551 chip transmits are not - interrupt driven, and the transceiver blocks if the receiver asserts flow - control because of a full buffer. + Driver for the Apple2 Super Serial Card. Supports up to 19200 baud, + hardware flow control (RTS/CTS) and interrupt driven receives. Note + that because of the peculiarities of the 6551 chip transmits are not + interrupt driven, and the transceiver blocks if the receiver asserts + flow control because of a full buffer.

@@ -196,11 +196,6 @@ supported by BASIC, the following syntax was chosen: -Function keys

- -These are defined to be OpenApple + number key. - - Interrupts

The runtime for the Apple ][ uses routines marked as + +

+ +enhanced Apple //e specific information for cc65 +<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org"> +<date>2003-12-16 + +<abstract> +An overview over the enhanced Apple //e runtime system as it is +implemented for the cc65 C compiler. +</abstract> + +<!-- Table of contents --> +<toc> + +<!-- Begin the document --> + +<sect>Overview<p> + +This file contains an overview of the enhanced Apple //e runtime system +as it comes with the cc65 C compiler. It describes the memory layout, +enhanced Apple //e specific header files, available drivers, and any +pitfalls specific to that platform. + +Please note that enhanced Apple //e specific functions are just mentioned +here, they are described in detail in the separate <htmlurl url="funcref.html" +name="function reference">. Even functions marked as "platform dependent" may +be available on more than one platform. Please see the function reference for +more information. + + + +<sect>Binary format<p> + +The standard binary output format generated by the linker for the +enhanced Apple //e target is a machine language program with a 4 byte DOS +3.3 header. The standard load address is $800. + +The DOS header is in its own segment named <tt/EXEHDR/. If you don't want the +header for some reason, you can change + +<verb> + HEADER: start = $0000, size = $4, file = %O; +</verb> + +to + +<verb> + HEADER: start = $0000, size = $4, file = ""; +</verb> + +in the linker configuration to have the linker remove it. + +Please note that there is a "Apple ][ ProDOS 8 system program +for loading binary programs" available in the cc65 User Contributions section. +It adds all benefits of a ProDOS 8 system program to the standard binary +program generated by the linker for the enhanced Apple //e target. + + + +<sect>Memory layout<p> + +In the standard setup, cc65 generated programs use the memory from +$800 to $95FF, so 35.5K of memory are available. ROM calls are +possible without further precautions. + +Special locations: + +<descrip> + <tag/Stack/ + The C runtime stack is located at HIMEM and grows downwards, regardless of + how your linker config file is setup. + + <tag/Heap/ + The C heap is located at the end of the program and grows towards the C + runtime stack. +</descrip><p> + + + +<sect>Platform specific header files<p> + +Programs containing enhanced Apple //e specific code may use the +<tt/apple2enh.h/ header file. + + +<sect1>enhanced Apple //e specific functions<p> + +The functions listed below are special for the enhanced Apple //e. See +the <htmlurl url="funcref.html" name="function reference"> for declaration and +usage. + +<itemize> +<item>_dos_type +<item>_textframe +<item>_textframexy +<item>get_ostype +</itemize> + + +<sect1>Hardware access<p> + +There's currently no support for direct hardware access. This does not mean +you cannot do it, it just means that there's no help. + + + +<sect>Loadable drivers<p> + + +<sect1>Graphics drivers<p> + +<descrip> + + <tag><tt/a2e.lo.tgi/</tag> + This driver was written by Stefan Haubenthal. It features a resolution of + 40×40 with 16 colors. At the bottom of the screen, 4 additional text + lines are available. + + <tag><tt/a2e.hi.tgi/</tag> + This driver was written by Stefan Haubenthal. It features a resolution of + 280×192 with 6 colors. Note that programs using this driver will have + to be linked with <tt/--start-addr $4000/ to reserve the first hires page. + +</descrip><p> + + +<sect1>Extended memory drivers<p> + +<descrip> + + <tag><tt/a2e.lc.emd/</tag> + Gives access to 12KB RAM (48 pages of 256 bytes each) on the + Apple2 language card. The driver was contributed by Stefan Haubenthal. + Note that this driver is incompatible with any DOS using the language + card memory! + +</descrip><p> + + +<sect1>Joystick drivers<p> + +<descrip> + + <tag><tt/a2e.stdjoy.joy/</tag> + Supports up to two standard analog joysticks connected to the game port of + the enhanced Apple //e. + +</descrip><p> + + +<sect1>Mouse drivers<p> + +Currently no drivers available (in fact, the API for loadable mouse drivers +does not exist). + + +<sect1>RS232 device drivers<p> + +<descrip> + + <tag><tt/a2e.ssc.ser/</tag> + Driver for the Apple2 Super Serial Card. Supports up to 19200 baud, + hardware flow control (RTS/CTS) and interrupt driven receives. Note + that because of the peculiarities of the 6551 chip transmits are not + interrupt driven, and the transceiver blocks if the receiver asserts + flow control because of a full buffer. + +</descrip><p> + + + +<sect>Limitations<p> + + + +<sect>Other hints<p> + + +<sect1>Passing arguments to the program<p> + +Command line arguments can be passed to <tt/main()/ after BLOAD. Since this is not +supported by BASIC, the following syntax was chosen: + +<tscreen><verb> +]CALL2048:REM ARG1 " ARG2 IS QUOTED" ARG3 "" ARG5 +</verb></tscreen> + +<enum> +<item>Arguments are separated by spaces. +<item>Arguments may be quoted. +<item>Leading and trailing spaces around an argument are ignored. Spaces within + a quoted argument are allowed. +<item>The first argument passed to <tt/main/ is the program name. +<item>A maximum number of 10 arguments (including the program name) are + supported. +</enum> + + +<sect1>Function keys<p> + +These are defined to be OpenApple + number key. + + +<sect1>Interrupts<p> + +The runtime for the enhanced Apple //e uses routines marked as <tt/.CONDES/ +type 2 for ProDOS interrupt handlers. Such routines must be written as simple +machine language subroutines and will be called automatically by the interrupt +handler code when they are linked into a program. See the discussion of the +<tt/.CONDES/ feature in the <htmlurl url="ca65.html" name="assembler manual">. + + + +<sect>Bugs/Feedback<p> + +If you have problems using the library, if you find any bugs, or if you're +doing something interesting with it, I would be glad to hear from you. Feel +free to contact me by email (<htmlurl url="mailto:uz@cc65.org" +name="uz@cc65.org">). + + + +<sect>License<p> + +This software is provided 'as-is', without any expressed or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + +<enum> +<item> The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. +<item> Altered source versions must be plainly marked as such, and must not + be misrepresented as being the original software. +<item> This notice may not be removed or altered from any source + distribution. +</enum> + +</article> diff --git a/doc/index.sgml b/doc/index.sgml index 2aed35ee9..f6ef30bee 100644 --- a/doc/index.sgml +++ b/doc/index.sgml @@ -102,6 +102,9 @@ Main documentation page, contains links to other available stuff. <tag><htmlurl url="apple2.html" name="apple2.html"></tag> Topics specific to the Apple ][. + <tag><htmlurl url="apple2enh.html" name="apple2enh.html"></tag> + Topics specific to the enhanced Apple //e. + <tag><htmlurl url="atari.html" name="atari.html"></tag> Topics specific to the Atari 8-bit machines. -- 2.39.2