I love projects like this. It's a nice clean way to preserve some old arcade history without trying to find things like, say 27C16 MOS EPROMS that still work.
A group of guys I know did a similar piece of work when creating the Ms Pac Man / Galaga 20th anniversary machine for Namco. They took the original Ms Pac schematic (Z-80 based), a board that looks like this:
A group of guys I know did a similar piece of work when creating the Ms Pac Man / Galaga 20th anniversary machine for Namco. They took the original Ms Pac schematic (Z-80 based), a board that looks like this:
http://images.cloud.worthpoint.com/wpimages/images/images1/1...
and shrunk it down to a couple of FPGAs and an EPROM:
http://imgur.com/plzWkSU