eke-eke has updated Genesis Plus for use with the GameCube. Due to the ability of the Wii to play GameCube things as well, this will work on the Wii too.

Genesis Plus is a Genesis/Megadrive emulator.The latest stable release is available as .dol – Source code is downloadable too.

– corrected MAX_OUTPUT value in SN76496 core: fix PSG sound (SFX) volume
– removed unused sound buffer allocation