"Byron G. Jacquot" wrote: > There are some > new variants on the 8051, Z80 and 6502 that keep those lines alive. I've There are recent variants of the 6502? I didn't know this. Anyone have any details? The least I had heard was a 16-bit version, which could be switched between 6502 and 16-bit mode, IIRC. But this was 15 years ago... Ingo