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cc65 - a freeware C compiler for 6502 based systems
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Oliver Schmidt 6de78c536f Made DOS 3.3 IRQ statement more general. 
I recently came across that the question if a driver is compatible with DOS 3.3 isn't about the fact if it actually uses IRQs but if it potentially could use IRQs as the driver kernel pulls in the IRQ handler anyway. This is especially suboptimal in the scenario of statically linked drivers where it is concpetually totally clear at link time they use IRQs or not. Apart from that it might make sense to be able to define on a per-target basis if _any_ of the drivers of a certain class uses IRQs. If that isn't the cases the driver kernel for that driver class for that target could omit IRQ handling too. I'm aware that Uz imagined drivers being loaded which weren't known when the program was linked - but I don't see this.
2017-06-30 09:50:28 +02:00
asminc Creativison changes. 2017-03-17 21:42:51 +01:00
cfg Fix regression of #pragma bss-name 2017-03-21 22:35:25 +01:00
doc Made DOS 3.3 IRQ statement more general. 2017-06-30 09:50:28 +02:00
include Edit comment style, add second const 2017-06-09 10:35:16 +03:00
libsrc Merge pull request #457 from pfusik/const-arrays 2017-06-30 09:28:40 +02:00
samples Removed a pointless cc65 command-line option from the samples makefile. 2017-03-10 08:47:48 -05:00
src Fix coding style. 2017-06-30 07:35:21 +02:00
test Merge pull request #446 from clbr/lz4 2017-06-10 23:23:12 +02:00
testcode Merge pull request #389 from IrgendwerA8/stringimprovements 2017-04-04 15:39:37 +02:00
util
.gitattributes Added .gitattributes to force LF line endings on commit. 2017-03-12 18:13:18 +01:00
.gitignore Don't ignore more than necessary. 2016-06-01 22:36:38 +02:00
.travis.yml Migrate 'encrypted variables' variables to 'repository settings'. 2017-05-17 20:56:21 +02:00
LICENSE
Makefile Added "html" and "info" goals to the top-level Makefile. 2017-05-24 18:49:02 -04:00
Makefile.travis
README.md README.md: PC-Engine is a console 2017-02-22 14:25:10 +01:00

README.md

Windows Snapshot

Documentation

Wiki

Build Status

cc65 is a complete cross development package for 65(C)02 systems, including a powerful macro assembler, a C compiler, linker, librarian and several other tools.

cc65 has C and runtime library support for many of the old 6502 machines, including

  • the following Commodore machines:
    • VIC20
    • C16/C116 and Plus/4
    • C64
    • C128
    • CBM 510 (aka P500)
    • the 600/700 family
    • newer PET machines (not 2001).
  • the Apple ][+ and successors.
  • the Atari 8 bit machines.
  • the Atari 5200 console.
  • GEOS for the C64, C128 and Apple //e.
  • the Bit Corporation Gamate console.
  • the NEC PC-Engine (aka TurboGrafx-16) console.
  • the Nintendo Entertainment System (NES) console.
  • the Watara Supervision console.
  • the VTech Creativision console.
  • the Oric Atmos.
  • the Oric Telestrat.
  • the Lynx console.
  • the Ohio Scientific Challenger 1P.

The libraries are fairly portable, so creating a version for other 6502s shouldn't be too much work.