Mame32 is an emulator. Simply put, it enables a standard PC to mimic the internal hardware of a large number of stand alone arcade machines from 1978 to 2000.
When you play a game with the emulator, you're not playing a recreation of the original arcade hit, when you play the games with the emulator .
You're running the exact same software that was written for a Z80 microprocessor almost twenty years ago