⚠️ ROMs are copyrighted. You legally need to dump your own arcade boards. Below are places where archival copies are commonly shared – proceed at your own risk per your country’s laws.
Use Supermodel (Standalone) . While MAME currently supports Model 3, the standalone Supermodel emulator (specifically recent builds like v0.3a or the ongoing Git builds) offers significantly better performance, widescreen hacks, and force feedback support. sega model 3 rom archive best