Ullrich von Bassewitz has announced cc65 version 2.12.0 is now available for download. cc65 is a very capable cross-development C compiler, with tools and utilities for coding with 65(C)02 and related processors.

Ullrich’s full announcement is attached.

I’m proud to announce version 2.12.0 of cc65. 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 Commodore VIC20, C16/C116, C64, C128, C116, Plus/4, 510 (aka P500),
the 600/700 family and newer PET machines (not 2001).

– The Apple ][ and successors.

– The Atari 8 bit machines.

– GEOS for the C64 and C128.

– The Nintendo Entertainment System (NES).

– The Supervision console.

– The Oric Atmos.

– The Lynx Console.

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

This is mostly a bugfix release, with larger changes in just a few places. The latter is especially true for the Apple ][ libraries, which have undergone major changes done by Oliver Schmidt.

As usual I will provide the complete sources and several binary packages, including RPMs for RedHat Enterprise Linux 5. Please note that there are separate RPMs for the compiler proper, the docs, and the target specific libraries. To develop for one of the predefined target systems you need the compiler RPM package *and* one of the target machine packages. Be sure to download the documentation package if you’re new to cc65.

Precompiled binaries for DOS, OS/2 and Windows are available in ZIP archives. As with the RPM packages, you need the package for the development system (Windows or whatever.) *and* one or more of the target machine packages, plus optionally the doc package.

There’s also a windows installer package. The target specific libraries and header files are selectable as components from within the installer dialogue.

All packages are available from the MU software FTP server:


More information on cc65 can be found on the cc65 web page at


There is also a mailing list for discussing cc65 related issues (programming, suggestions, bugs, …). See


for information on how to subscribe to this list.

While I’m the main developer of cc65, it is actually a joint effort. I would like to thank the target library developers, all the people on the cc65 mailing list, all those sending suggestions and feedback, and even those bugging me for a new stable release:-) The CREDITS file is probably incomplete, but you know who you are.

Thank you!

Ullrich von Bassewitz