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Verilog source code for a fully functional 6502 compatible cpu core.
Software Here is a 6502 macro assembler. It supports all the original 6502 instructions plus W65C02 instructions and is TASS compatible. It can produce a binary or S19 record compatible output. It's just called "asm" for lack of a better moniker. It is shareware and it'll cost $50 to get it to work for more than 45 days. asm.zip (about 48k)
The following screen from:
"The Complete Commodore Inner Space Anthology" by Karl Hildon with the
author's permission.
Links http://www.cc65.org (compiler + tools) http://c64upgra.de/c-one/ (C-One computer - C64 compatible upgrade) http://www.zimmers.net/anonftp/pub/cbm//manuals/anthology/400/index.html - contains a listing of a reference manual for the Commodore machines.
Other 6502 cores http://shimizu-lab.dt.u-tokai.ac.jp/pgm Software For SoC's http://members.lycos.co.uk/leeedavison/6502/ehbasic/
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