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Game Boy Color
RetroBat system gbc
Games go in roms\gbc
BIOS gbc_bios.bin, which a sync fetches when your RomM library has it
Tested rows Platforms lists each emulator and whether it passed

Which emulator to use

Leave RetroBat on its default, RetroArch with the Gambatte core. Every emulator RetroBat offers for the Game Boy Color passed RomMBat's tests, so any of them is safe to pick.

BIOS

A sync fetches the Game Boy Color boot ROM, gbc_bios.bin, from your RomM library. Only BizHawk's GBHawk core refuses to start without it. If your library lacks it, see BIOS and firmware.

Saves

A save follows you to another emulator only where the two read the same file (Changing emulator). On the Game Boy Color:

  • All four of RetroArch's cores and the standalone Mesen share one save.
  • The standalone mGBA and Mednafen share another.
  • BizHawk's three cores share a third.

The rest each keep their own.

Known issues

  • A game with a clock, such as Pokemon Crystal, can lose its time when you change emulator, even between emulators that share the save, since each keeps the clock its own way. Some then ask you to set the clock again, and some show the wrong time. Stay on one emulator and the clock syncs with the save.
  • For a game with a clock, the standalone mGBA, Mednafen, Mesen, ares and jgenesis rewrite it every time you play, even if you did not save, so each session sends a small new copy to RomM. That is expected.