Hey everyone, I finally got my hands on some 12C508A PIC chips so I decided to make a ONEchip Stealth Mod and install it in one of my spare PSONE's, The benefit of this mod over my 3-wire mod is it supports games from all regions without patching and it supports anti modchip games as you can see from my tests in the video :)
Enjoy
Install Diagrams
PM41 board = http://www.mmmonkey.co.uk/wordpress/w...
PM41 A Board = http://www.fatcat.co.nz/psx/install/1...
HEX
ONEchip HEX code = http://tinyurl.com/onechip
HEX
Multimode (MM3) HEX code = http://tinyurl.com/MultiModeChip
Install Diagrams for Multimode (MM3) chips
http://tinyurl.com/MultiModeInstall
Info about the Multimode (MM3) chip
http://tinyurl.com/MultiModeReversedInfo
Collection of Install Diagrams
http://chipinstallation.com/func.asp?...