Hello. I can no longer get into the Mame config menu! I was messing around with remapping my buttons, and accidentally assigned the "configuration menu" option to escape, and now I cannot reassign it back to tab because everytime I press escape the emu exits(which is normal). Can someone please tell me how to make the mame config menu revert back to their original assigned buttons, so I can resolve this issue? Is there an nvram that I can delete or something?