Thanks for the replies, everyone. I tried Pong in the latest MAME and while it was really cool to see - something I thought I would never see - it ran very, very slowly on my PC. Pong in DICE was even worse, it ran at a blistering one frame per second at best, so I imagine Stunt Cycle wouldn't run well either (Stunt Cycle isn't included in DICE as far as I can tell). Not complaining, just resigning myself to my MAME cab having (for now) a PC simulation of Pong rather than an emulation (and no Stunt Cycle at all).