mirror of
https://github.com/cc65/cc65.git
synced 2025-04-04 21:33:30 +00:00
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
This commit is contained in:
cuz
parent
71abd1471f
commit
e3cf61b569
@ -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) $<
|
||||
|
||||
|
||||
@ -130,9 +130,9 @@ you cannot do it, it just means that there's no help.
|
||||
|
||||
<tag><tt/a2.lc.emd/</tag>
|
||||
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!
|
||||
|
||||
</descrip><p>
|
||||
|
||||
@ -159,11 +159,11 @@ does not exist).
|
||||
<descrip>
|
||||
|
||||
<tag><tt/a2.ssc.ser/</tag>
|
||||
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.
|
||||
|
||||
</descrip><p>
|
||||
|
||||
@ -196,11 +196,6 @@ supported by BASIC, the following syntax was chosen:
|
||||
</enum>
|
||||
|
||||
|
||||
<sect1>Function keys<p>
|
||||
|
||||
These are defined to be OpenApple + number key.
|
||||
|
||||
|
||||
<sect1>Interrupts<p>
|
||||
|
||||
The runtime for the Apple ][ uses routines marked as <tt/.CONDES/
|
||||
|
||||
246
doc/apple2enh.sgml
Normal file
246
doc/apple2enh.sgml
Normal file
@ -0,0 +1,246 @@
|
||||
<!doctype linuxdoc system>
|
||||
|
||||
<article>
|
||||
|
||||
<title>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>
|
||||
@ -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.
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user