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cc65 - a freeware C compiler for 6502 based systems
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Carlo Bramini b04d79b1da [SIM65] Support undocumented opcodes for 6502 
This PR is mostly a complete rewrite of the emulator for 6502/65c02 opcodes.
It provides an easier to maintain implementation of the instructions, by using few macros rather than having hand-written code for each function.
All undocumented, previously missing opcodes for 6502 are also implemented.
The patch also includes a detailed documentation of those opcodes, for reference to developers.
This PR should fix one of the milestones listed here for the next version of CC65:

https://github.com/cc65/wiki/wiki/Before-the-next-release
 		2024-02-08 12:13:17 +01:00
.github Merge pull request #2310 from pm100/vs64 2023-12-31 18:54:23 +01:00
asminc [SIM65] Support undocumented opcodes for 6502 2024-02-08 12:13:17 +01:00
cfg style update and add rp6502 doc 2023-11-17 11:08:51 -08:00
doc Apple2: implement stat(2) and statvfs(3) 2024-01-01 19:12:51 +01:00
include Apple2: implement stat(2) and statvfs(3) 2024-01-01 19:12:51 +01:00
libsrc [SIM65] Support undocumented opcodes for 6502 2024-02-08 12:13:17 +01:00
samples Add KIM-1 functions to write to the 7-segment LED display and get 2023-03-29 18:40:10 -04:00
src [SIM65] Support undocumented opcodes for 6502 2024-02-08 12:13:17 +01:00
targettest Rename sound to _sound. 2023-01-10 11:16:36 -08:00
test Merge pull request #2314 from acqn/PPFix 2023-12-31 19:16:44 +01:00
util Merge pull request #1871 from clbr/da816 2022-12-30 15:34:40 +01:00
.editorconfig Fixed EOL settings (LF vs CRLF) for Visual Studio. 2023-10-11 23:57:45 +08:00
.gitattributes Added .gitattributes to force LF line endings on commit. 2017-03-12 18:13:18 +01:00
.gitignore Ignore executables in util directory 2022-04-03 00:02:00 +02:00
.travis.yml Don 2021-09-29 14:48:09 +02:00
Contributing.md Re-introduce necessary comments, wit a clearer wording 2023-10-03 18:35:23 +02:00
LICENSE Simplified license. 2015-05-05 21:56:23 +02:00
Makefile libtest target alternative to libs 2023-05-05 21:56:52 -04:00
Makefile.travis The doc now lives in the 'master' branch of the 'doc' project. 2018-09-18 23:39:11 +02:00
README.md mention in readme 2023-11-06 21:53:14 -05:00

README.md

About cc65

cc65 is a complete cross development package for 65(C)02 systems, including a powerful macro assembler, a C compiler, linker, archiver and several other tools. cc65 has C and runtime library support for many of the old 6502 machines. For details look at the Website.

People

Project founder:

  • Ullrich von Bassewitz

Core team members:

External contributors:

(The above list is incomplete, if you feel left out - please speak up or add yourself in a PR)

For a complete list look at the full team list or the list of all contributors

Contact

For general discussion, questions, etc subscribe to the mailing list or use the github discussions.

Some of us may also be around on IRC #cc65 on libera.chat

Documentation

  • The main Documentation for users and developers

  • Info on Contributing to the CC65 project. Please read this before working on something you want to contribute, and before reporting bugs.

  • The Wiki contains some extra info that does not fit into the regular documentation.

Downloads

Snapshot Build