--- /dev/null
+<!doctype linuxdoc system>
+
+<article>
+
+<title>Atari Lynx specific information for cc65
+<author>Karri Kaksonen, <htmlurl url="mailto:karri@sipo.fi" name="karri@sipo.fi">
+Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
+<date>2004-10.14
+
+<abstract>
+An overview over the Atari Lynx 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 Atari Lynx runtime system as it comes
+with the cc65 C compiler. It describes the memory layout, Lynx specific header
+files, available drivers, and any pitfalls specific to that platform.
+
+Please note that Lynx 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 VIC20 target
+is a machine language program with a one line BASIC stub. This means that a
+program can be loaded as BASIC program and started with RUN. It is of course
+possible to change this behaviour by using a modified startup file and linker
+config.
+
+
+<sect>Memory layout<p>
+
+cc65 generated programs with the default setup run with the I/O area and the
+kernal and BASIC ROM enabled (RAM at $A000 - $BFFF may be used
+for the heap), which gives a usable memory range of $1000 - $1DFF.
+All ROM entry points may be called directly without additional code.
+
+Special locations:
+
+<descrip>
+ <tag/Text screen/
+ The text screen is located at $1E00 (as in the standard setup).
+
+ <tag/Stack/
+ The C runtime stack is located at $1DFF and growing downwards.
+
+ <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 Lynx specific code may use the <tt/lynx.h/ header file.
+
+
+<sect1>Lynx specific functions<p>
+
+<itemize>
+<item>lynx_change_framerate
+<item>lynx_eeprom_erase
+<item>lynx_eeprom_read
+<item>lynx_eeprom_write
+</itemize>
+
+
+
+<sect1>Hardware access<p>
+
+The following pseudo variables declared in the <tt/lynx.h/ header file do
+allow access to hardware located in the address space. Some variables are
+structures, accessing the struct fields will access the chip registers.
+
+<descrip>
+
+ <tag><tt/MIKEY/</tag>
+ The <tt/MIKEY/ structure allows access to MIKEY chip. See the <tt/_mikey.h/
+ header file located in the include directory for the declaration of the
+ structure.
+
+ <tag><tt/SUZY/</tag>
+ The <tt/SUZY/ structure allows access to SUZY chip. See the <tt/_suzy.h/
+ header file located in the include directory for the declaration of the
+ structure.
+
+</descrip><p>
+
+
+
+<sect>Loadable drivers<p>
+
+<sect1>Graphics drivers<p>
+
+A TGI driver for the standard graphics mode (160*102 in 16 colors) is
+available, but must be statically linked, because no file I/O is available.
+See the documentation for the <htmlurl url="co65.html" name="co65 utility">
+for information on how to do that.
+
+
+<sect1>Extended memory drivers<p>
+
+No extended memory drivers are currently available for the Lynx.
+
+
+<sect1>Joystick drivers<p>
+
+A joystick driver for the standard buttons is available, but must be
+statically linked, because no file I/O is available. See the documentation for
+the <htmlurl url="co65.html" name="co65 utility"> for information on how to do
+that.
+
+
+<sect1>Mouse drivers<p>
+
+No mouse drivers are currently available for the Lynx.
+
+
+<sect1>RS232 device drivers<p>
+
+No serial drivers are currently available for the Lynx.
+
+
+
+<sect>Limitations<p>
+
+
+
+<sect>Other hints<p>
+
+
+
+<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>
+
+
+
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