Does anyone here know a lot about PlayStation 1 mod chips?

I took my old PS1 apart and found the mod chip that was installed back then.

The PS1 has a PU-22 motherboard, and a PIC12C508/P is soldered onto it. The chip is glued into the case and soldered to the motherboard with wires.

If I’ve identified the pins correctly, pins 2, 3, and 5 are not in use.

I’m trying to figure out exactly which firmware or mod this might be.

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[–] voodoo3dfx@retrolemmy.com 6 points 2 days ago (2 children)

wow, I remember fitting those in the late 1990s and early 2000s. I used thinner wires though. I cannot remember what they were called but, managed to buy the blank chips and program them from hex I got off the internet.

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[–] voodoo3dfx@retrolemmy.com 4 points 2 days ago (1 child)

this sounds like the same. https://github.com/Kippykip/PSX-Modchip

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[–] ggtdbz@lemmy.dbzer0.com 4 points 2 days ago

I would never need this in my life but I find it really comforting that things like this are archived and shared and rewritten decades after they’re relevant.

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