> today i was playing Muscle Bomber Duo: Heat Up Warriors (Japan 931206) and sometimes > a message display it says > > 0589d0: read sound ROM byte 7140 > > i don't know what it means it says sound rom byte so i guess it has something to do > with sound
It's kind of a bug. It means that whatever MAME dev was implementing the driver chose to put a line of code in the driver that displays that message on-screen when a certain thing happens.
So the ROM dump is okay, and it's not a bug in the game itself, and it's not really a bug in the driver because the MAME developer who wrote it specifically put that functionality there.
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