ps2-bios
There are 2 repositories under ps2-bios topic.
ps2homebrew/PS2Ident
PS2Ident is an identification tool that allows dumps of a PlayStation 2 console's ROM chips and MECHACON NVRAM to be made. It will also gather data from the console
78edu/playstation2-bios-extract
ps2 bios extractor - Modules extraction from PlaysStation 2 rom dump