Jim wrote: > 22V10's & 16V8's are electrically erasable and reprogrammable. Careful there. That's true of the parts with the GAL or PALCE prefixes, but not necessarily with all 22V10 and 16V8 parts, especially if you find old stock. The original PAL16V8 and PAL22V10 definitely *were* one-time-programmable. Eric