<article>
<title>Commodore VIC20 (aka VC20) specific information for cc65
-<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
-Stefan A. Haubenthal, <htmlurl url="mailto:polluks@sdf.lonestar.org" name="polluks@sdf.lonestar.org">
-<date>2004-09-13
+<author>
+<url url="mailto:uz@cc65.org" name="Ullrich von Bassewitz">,<newline>
+<url url="mailto:polluks@sdf.lonestar.org" name="Stefan A. Haubenthal">
+<date>2014-04-12
<abstract>
An overview over the VIC20 runtime system as it is implemented for the cc65 C
<sect>Overview<p>
This file contains an overview of the VIC20 runtime system as it comes with the
-cc65 C compiler. It describes the memory layout, VIC20 specific header files,
+cc65 C compiler. It describes the memory layout, VIC20-specific header files,
available drivers, and any pitfalls specific to that platform.
-Please note that VIC20 specific functions are just mentioned here, they are
-described in detail in the separate <htmlurl url="funcref.html" name="function
+Please note that VIC20-specific functions are just mentioned here, they are
+described in detail in the separate <url 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>Platform specific header files<p>
+<sect>Platform-specific header files<p>
-Programs containing VIC20 specific code may use the <tt/vic20.h/ or <tt/cbm.h/
+Programs containing VIC20-specific code may use the <tt/vic20.h/ or <tt/cbm.h/
header files. Using the later may be an option when writing code for more than
one CBM platform, since it includes <tt/vic20.h/ and declares several functions
common to all CBM platforms.
-<sect1>VIC20 specific functions<p>
+<sect1>VIC20-specific functions<p>
There are currently no special VIC20 functions.
-<sect1>CBM specific functions<p>
+<sect1>CBM-specific functions<p>
Some functions are available for all (or at least most) of the Commodore
-machines. See the <htmlurl url="funcref.html" name="function reference"> for
+machines. See the <url url="funcref.html" name="function reference"> for
declaration and usage.
<itemize>
<sect1>Joystick drivers<p>
+The default drivers, <tt/joy_stddrv (joy_static_stddrv)/, point to <tt/vic20-stdjoy.joy (vic20_stdjoy_joy)/.
+
<descrip>
<tag><tt/vic20-stdjoy.joy (vic20_stdjoy_joy)/</tag>
<tag><tt/vic20-ptvjoy.joy (vic20_ptvjoy_joy)/</tag>
Driver for the Protovision 4-player adapter contributed by Groepaz. See
- <htmlurl url="http://www.protovision-online.de/hardw/hardwstart.htm"
- name="http://www.protovision-online.de/hardw/hardwstart.htm"> for prices and
- building instructions. Up to three joysticks are supported.
+ <url url="http://www.protovision-online.de/hardw/4_player.php?language=en"
+ name="Protovision shop"> for prices and building instructions. Up to three
+ joysticks are supported.
</descrip><p>
<sect>Other hints<p>
+
<sect1>Escape code<p>
-For an Esc press CTRL and [ key.
+For an Esc, press CTRL and the <tt/[/ key.
+
<sect1>Passing arguments to the program<p>
-Command line arguments can be passed to <tt/main()/. Since this is not
-supported by BASIC, the following syntax was chosen:
+Command-line arguments can be passed to <tt/main()/. Since that is not
+supported directly by BASIC, the following syntax was chosen:
<tscreen><verb>
RUN:REM ARG1 " ARG2 IS QUOTED" ARG3 "" ARG5
<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>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>
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">.
+feature in the <url url="ca65.html" name="assembler manual">.