@dteam

That is just what I was thinking tonight.

Cool, we were on the right track ;-)

Well, still we have to learn allot about MAME, we are not finished yet with learning !

@cyperghost My overall goal is to make a pacman & donkey kong machine that has a power button (on/off that saves the current state), and a button that switches games seamlessly (because currently it has to wait for the games to load each time) and hopefully a way to have the credits transfer between games.

Update, I used the same ROM on MAME 0.209 this weekend and it worked as is should. Not sure if it's the Pi or SW but I'm ok with using the RetroPi on console types games only. Thank you for all of your help.

Thank,
Scott