maybe it was wince. it has been a very long time! the ps1 had caetla (programmable with a parallel port and cheat cartridge) and yaroze (official sony devkits

maybe it was wince. it has been a very long time! the ps1 had caetla (programmable with a parallel port and cheat cartridge) and yaroze (official sony devkits for hobbyists), but i think that was on some custom sony os services library in rom. edit: ahh yeah, there was the wince internet explorer goofy thing, but also a linux port where someone broke the bootloader lock via some multimedia cd feature.