Nice! someone with the skill should try to see if this enables something in the game or if it is just an easter egg. I think the linked page deserves a sweep. I remmember posting some codes for Truxton (level select) and Metal Head (anime faces) on SEGA 16 that at the time wasn't published anywhere else. At the time I was trying to make a definitive and checked cheat code list for all Brazilian releases but never got around to sit down and try each one of them.