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cc65 - a freeware C compiler for 6502 based systems
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3a028fb621
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Oliver Schmidt 3a028fb621 Turned sim65 into a lightweight cc65 execution environment. 
The sim65 source code has been a construction site for over a decade.
I was looking for a simple cc65 program execution environment for
regression tests. So I decided to re-purpose sim65 for that task by
removing about everything but the 6502 emulation.

There's no memory mapped i/o emulation whatsoever. Rather exit(),
open(), close(), read() and write() calls are supported by mapping
them through a thin paravirtualization layer to the corresponding
host os functions.

Note: The sim65 6502 emulation provides means to switch between
6502 and 65C02 emulation but currently there are no actual 65C02
opcodes implemented.
2013-05-20 20:20:14 +02:00
asminc Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
cfg Adjusted comment. 2013-04-09 23:10:35 +02:00
include Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
libsrc Made dependency handling for C sources actually work. 2013-05-12 18:21:49 +02:00
samples Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
src Turned sim65 into a lightweight cc65 execution environment. 2013-05-20 20:20:14 +02:00
testcode Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
util Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
.gitignore Ignore only top level directories. 2013-05-04 18:04:13 +02:00
.travis.yml Added top level Makefile. 2013-05-04 23:01:07 +02:00
LICENSE Added "the usual suspects". 2013-03-21 22:23:38 +01:00
Makefile Renamed [un]install goals to [un]avail. 2013-05-15 11:59:51 +02:00
README Minor consistency improvement. 2013-03-30 17:19:54 +01:00

README 

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.

  - 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.