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.
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.
Can't tell you details but found a similar chip for sale. Maybe that helps... https://www.aliexpress.com/item/4000236804743.html
There were several mods that ran on a pic chip (including some that have been made much more recently and can be found on GitHub)
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