I did actually design a PCB to access a PGM card from a micro controller, but so far didn't have time to write all the firmware... I want to try to program it in-circuit as well, with a jumper wire for /we.Not hard to replace another games sticker with a reproduction demon front sticker. I'd hate to think this is the case here.....
I still have a reproduction Project for "Demon Front" as you know.... I think thats as close as anyone has got so far....