PSOne MM3 mod chip install. There are many others like it, but this one is mine. : r/psx
Any ideas on what this mod chip is or does : r/psx
PsNee on PU-23 board - Project Guidance - Arduino Forum
Darthsternie on Twitter: "Anybody who knows anything about PS1 Modchips able to help me tell what this modchip could be? I can't these solder points anywhere online. It's a PSOne with 12c508A
Issues with pu-8 modchip .. spindle auto spins - PlayStation Development Network
Sony Playstation 1 PS1 Modchip - Region Free - Backups