"Martin J. Maney" wrote: > I can't resist mentioning that I have a 6501 lurking in a dusty drawer. I've got a 6501. And a 6502 that is early enough that it doesn't have the ROR instruction, which was added in September of 1975. But I've rewritten most of the embedded system code I originally wrote for the 6502 and the Mitsubishi 8-bit parts (6502-like) to run on the PIC. Cheers, Eric