Following the Super Nitendo (SNES) emulator for iPhone, one developer has started working on MAME emulator for iPhone. Controlling with the touch screen is definitely not an easy way, anyone making a external game controller to connect to iPhone?

Current Project Detail

As expected, performance is an issue. For example, Pacman and Q*bert run quite well, but Galaga and Gyruss are marginal even with frame skipping and lowered sound quality. The SDL port was the quickest way to get everything up and running without having to delve into the guts of MAME. I'll take a stab at slapping together something based on a really old, simpler version of MAME to see if it runs any better. 

Source [iphone-sdl-mame] via [engadgetmobile]