@shorling posted:It would be nice to have a series of boards that are direct plug-in replacements to restore functionality to PS 1, PS 2 and PS 3 engines.
Well, PS/1 ain't happening, I can't imagine anyone spending the amount of money to replicate 20+ year old technology! There is a "close to" drop-in board to replace PS/2 boards, it's the PS32 stacker board. It's the same board that is used for the steam PS/3 upgrade kits, and it's sold with 3V and 5V compatible connectors to replace failed 3V and 5V PS/2 boards.