We just released a replacement for most all S80 and S80A games. You set your game by DIP switch so no need to worry about game ROMs etc. Info about the board can be found at:
http://www.rottendog.us/MPU080.html
It is a new release. We have checked it in HH, BH, QQ, Counterforce and a few others.
So far we have shipped to Arcade Shop and Mad Amusements.
Good luck in what ever you do.
Jim Knight
256 677 530