Not sure what YM2612 is, but I was just saying.
I use fusion all the time, but Genesis plus does support those 8MB rom hacks or whatever. Still haven't finished my Pier solar and the great architects on the wii genesis plus emulator. That wii emulator is pretty sick, Just missing 32X emulation, kega fusion has it, but can't play pier solar, cause it only has 5MB rom file limit. But both are good emus. But I feel 32X emulation may have bigger demand than Whatever YM2616 is. (not to mention the sweet Graphic filters Kega Fusion has. Like this one) XBRZ makes Pixel games look nice on HD screens.