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cc65 - a freeware C compiler for 6502 based systems
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b2c1a77bb3
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Greg King b2c1a77bb3 Fixed the cc65 code that optimizes 16-bit compares when the high bytes are known to be equal. 
Only the low bytes are compared.  Originally, signed 16-bit compares were optimized into signed 8-bit compares.  But, the sign bits are in the high bytes; and, they're equal.  Therefore, the low bytes always must be compared as unsigned numbers.
Fixes #1348.
2020-12-24 12:27:09 -05:00
asminc Improved device I/O under DOS 3.3 2020-12-19 19:54:12 +01:00
cfg Added features; changed FFF0 segments 2020-11-28 20:56:12 +01:00
doc Documented the address size argument of the bss-name, code-name, data-name, and rodata-name pragmas. 2020-12-05 23:04:48 -05:00
include Added prototype 2020-11-18 10:28:19 +01:00
libsrc Improved device I/O under DOS 3.3 2020-12-19 19:54:12 +01:00
samples make plasma sample work again despite issue #1348 2020-11-19 23:21:06 +01:00
src Fixed the cc65 code that optimizes 16-bit compares when the high bytes are known to be equal. 2020-12-24 12:27:09 -05:00
targettest makefile cleanup 2020-10-16 15:50:18 +02:00
test Fixed the cc65 code that optimizes 16-bit compares when the high bytes are known to be equal. 2020-12-24 12:27:09 -05:00
util Removed unnecessary tool. 2020-07-19 13:16:29 +02:00
.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 Fixed Windows path notation. 2020-08-02 17:49:18 +02:00
LICENSE Simplified license. 2015-05-05 21:56:23 +02:00
Makefile Added test target. 2020-07-22 23:27:04 +02:00
Makefile.travis The doc now lives in the 'master' branch of the 'doc' project. 2018-09-18 23:39:11 +02:00
README.md Normalized Atari naming. 2020-02-17 11:07:52 +01:00

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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 2600 console.
  • 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.