About PS1 BIOS Guide

What This Site Is

PS1 BIOS Guide is a reference site covering everything you need to set up and run PlayStation 1 emulation. That means clear explanations of which BIOS file to use, how to install it in DuckStation and ePSXe, and how to troubleshoot the errors that come up along the way.

The PS1 library spans over 3,000 games across a production run from 1994 to 2006. DuckStation — the current best-in-class PS1 emulator — can run that entire library at upscaled resolutions with geometry correction and texture filtering that makes the original hardware's polygon limitations largely invisible. The BIOS is the one required piece that the emulator cannot provide itself.

What We Cover

• Every PS1 BIOS version by region and SCPH model number
• Step-by-step installation guides for DuckStation, ePSXe, RetroArch, and mednafen
• Troubleshooting guides for the most common BIOS errors
• BIOS version selection by game and by use case
• Game recommendations for the PS1 library

Contact

Use the contact page for DMCA notices, corrections, or general enquiries.