Hello ev'body, I'm an Italian proud owner of two N64 (the first European, the secondis a Japanese with RGB mod) and one Z64 device. I have a little problem becaus some games that didn't are out in EU aren't compatible (as in Iomega Zip Disks) with EU console, and some EU roms aren't comaptible with JAP system. I'd like to play every .z64 file in JAP system so I could use RGB... One of my friends said that maybe it could be possible changing Z64 bios, is it possible?
The Z64 patch file should help you play any game except the few bigger than 256 MBit. If that does not work, you can use Paladin to patch ROMs for different regions. Here's an excellent source for anything Z64: