Both machines still work fine with their original 6502 CPUs. And the 8032 consistently works fine with the 65C02S, with the previously mentioned connections. Interesting about pin 5 on the 8032 -- but as you mentioned it would seem to indicate that things would work the other way around.

I'm ...

Sorry, forgot to mention that I did make sure to disconnect pin 1 of the 65C02S. Not sure if illegal opcodes are used in the PET ROMs.. just looking through the schematics for the 8032 and 2001 to see if I can find anything that would cause it to work in one and not in the other.

Hi there,

I was wondering if someone here had some insight into a question I had.
I recently got one of the new 65C02 chips made by Western Design
Center, and wanted to try using them in a couple of Commodore PETs. I checked the notes on the chip at WDC and found that you needed to tie pin 36 (bus ...