I have thirteen functioning arcade games in my basement. Not completely OT since they all
date from the 1980's and have at least one 8-bit microprocessor in each :)
Anyway, try "RGVAC" as it is commonly known (rec.games.video.arcade.collecting).
Lots of help there, many posts by regulars, etc. I even got a T-shirt with a RGVAC logo
there :)
-Charles