Puyo Puyo 2 PCB GALs and PLDs

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mikejmoffitt
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Puyo Puyo 2 PCB GALs and PLDs

Post by mikejmoffitt »

I got a Sega System C2 board for cheap, but it's missing some PLDs. From pictures the one I'm missing is 315-5452 (a 16V8 GAL) and the larger EPM5032 PLD. The latter is the protection IC specific to the game, but the former is on all C2 boards. Are these dumped and well known, so I can just buy the needed PLD/GAL chips and program them?
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mikejmoffitt
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Re: Puyo Puyo 2 PCB GALs and PLDs

Post by mikejmoffitt »

I've ordered some 16V8 GALs, and found dumps for what should be on them. The only one remaining is the PLD, which has some more complicated behavior. I dug around and found an EPM5032 PLD but from another C2 game. I may look into patching the game to simply not read from it, allowing it to continue to do its palette and video control while not needing to read back the correct data.
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