submitted 1 month ago by byte21516@leminal.space to c/playstation@lemmy.zip

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cross-posted from: https://leminal.space/post/40261910

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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[-] byte21516@leminal.space 5 points 1 month ago

I also asked my question on Mastodon, and someone said "the PIC12C508 seems to only really be used by the Old Crow modchip"

Along with this link: https://www.psdevwiki.com/ps1/Modchips

I don't have issues with it, I just opened up my old console, I don't remember who set this modchip up, so I just want to know what it is, do I maybe want another one, etc. Just a small assessment.

this post was submitted on 27 Sep 2026

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