If you look up the massive, endless mega-threads on sites like Forum64 regarding these exact setups, the discussion routinely spills over past .
The "better" is the Raspberry Pi 4 running SavvyCAN with a CANtact interface. It has ten times the community support of the UltimateU64 for automotive projects. 463 mk3 ultimateu64 not found better
: The most reliable fix is to obtain a ROM set that is compatible with your current version of MAME. For example, if you are running MAME 0.182 or newer, ensure your umk3.zip is from a matching set. If you look up the massive, endless mega-threads