This FORUM is ONLY for posting requests for M.A.M.E. arcade cheats. The actual cheats should be posted in the M.A.M.E. "Arcade" Cheats forum. For cheat requests a 'please' would do no harm...
I'm surprised they didn't do it like they did for umk3:
lose your match and wait out the "insert credit to continue" counter then use a code to fill out/trick the ultimate code into being filled out and being accepted.