Ah ok.
I know some games HAVE been separated from multicarts, though. How is that done? If there is some way I could learn to seperate simple ROMs, I would like to try it. (Pac-Man for the NES/FC doesn't have any extra hardware mappers, if I remember correctly)
By the way, I thought Hummer Team Mario World's complete version WAS separated out into a single-ROM. Isn't there some hacked version of the complete ROM that makes the jumping physics better?