Bally/Midway MCR PAL IC's

Happy New Year Everybody,

On the Bally/Midway MCR CPU boards there are 5 custom chips which look
like they are MMI PAL devices.
I'm assuming they can easily be copied once they are identified.

0066-313BX-XXQX (MMC01) - H-T Generator - Custom
0066-314BX-XXQX (MMC02) - V-T Generator - Custom
0066-315BX-XXQX (MMC03) - Misc. V & H Circuits - Custom
0066-316BX-XXQX (MMC06) - Misc. TTL Circuits - Custom
0066-322BX-XXQX (MMC04) - NVR Controller - Custom

Does anyone know what kind of devices they are or what they can be
replaced with?

I put the schematic here
<http://games.rossiters.com/manuals/MCR/MCR-PALS.jpg>.

Thanks,

Matt

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Received on Fri Dec 31 02:11:43 2010