PS2 and PS1 BIOS Extraction Guide – Retro Game Corps
RetroArch Full Bios Set : Deu : Free Download, Borrow, and Streaming : Internet Archive
I can't configure Retroarch to play PS1 games. I must be doing something wrong. Or downloading incorrect ROMS. The configuration I have is the following: What am I doing wrong? : r/RetroArch
How to Play PS1 Games on your PC with Retroarch - Make Tech Easier
PlayStation BIOS files (NA/EU/JP) for Mednafen : Sony : Free Download, Borrow, and Streaming : Internet Archive