Change the bois chip to an original MV-1 bios it has separate coinage. Newer bios from MV-1A have command coining.
I'm not sure what they use in the hacked bios...
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I have a pair of Wangan Midnight Maximum Tune 3 with Namco N2 Hardware and both boards are un-repairable. I have the cage, Cards, Etc.
I been reading on other sites that the game has been hacked to run on windows with keyboard controls.
My thought is buy two computer boards, video cards, etc...