Has anybody figured out how to use the save/load state in MAME for the PS3? When I try to save or load I am prompted to select a save slot number. The problem is, it seems to be expecting a keyboard key hit from 0-9. I'm unable to do this with the controller. I've looked all around in the options menu, but can't find anything to help. As I recall, MAME for the PC had the same issue. Thanks.