I'm sure this has been asked before, but I can't find the answer. I think I must have somehow changed my keyboard settings in MAME so that now when I press TAB, it thinks I'm pressing escape and I get dumped out of the game. I can't figure out how I did this, exactly, but now there's no way for me to get to the in-MAME menus and redo the controls. How do I do this outside MAME? Is it hidden in some config file somewhere, because I can't find it.
Thanks for your help!