geneb wrote:
  I don't know if CP/M was ever ported to the 6502,
but even if it was,
 you'd be stuck for software as it's all 8080,8085 or Z-80 based. 
There certainly wasn't any "official" CP/M for the 6502.  The closest
thing I've ever seen was the ADIOS operating system for the Apple II,
which was designed to be CP/M-like.  It was developed by Soft Warehouse
because they didn't consider Apple DOS to be a satisfactory operating
system to host their muMath and muLisp products.