PSX Bios – Playstation PS1 Bios (SCPH1001.bin)

Running PS1 games on an emulator might seem easy at first, but things often go wrong unless one small file is in place: SCPH1001.bin. It’s basically the same software that helped the original PlayStation operate. Without it, a lot of games either won’t start or just won’t work the way they should.

This file is what helps the emulator “think” it’s a real PS1. Once the BIOS is added, the emulator starts acting more like the actual PlayStation. Things just run better—games load faster, the sound feels more in sync, and those annoying bugs or black screens usually disappear.

Is SCPH1001.bin Required for Every Emulator?

Not always—but in most cases, yes. Emulators like ePSXe, RetroArch, DuckStation, and PCSX Reloaded often depend on this file to function correctly. Some games simply won’t load at all without it.

There are other BIOS versions too, but SCPH1001 is by far the most popular and reliable—especially for NTSC-U (North American) game titles.

How to Use It

To set it up, first download the SCPH1001.bin file. Then move it into the BIOS folder inside your emulator’s directory. After that, go to your emulator settings and select the BIOS file. You might need to restart the app to make it work, but once it’s in place, you’re good to go.

Try loading a game afterward—especially one that didn’t work before—and chances are, it’ll run smoothly now.

Supported Emulators

This BIOS file works well with all major PS1 emulators, including:

• ePSXe (Windows / Android)
• RetroArch
• PCSX Reloaded
• DuckStation
• XEBRA

It’s lightweight, just under 1MB, and works across desktop and mobile platforms.

Is It Safe?

The file is safe to use. It’s been checked with several emulators and works without issues. There’s no harmful code inside—but still, always make sure you’re downloading from a site you trust.

Final Thoughts

If your emulator has been giving you trouble with PS1 games—crashes, black screens, or failed loads—SCPH1001.bin might be exactly what’s missing. It only takes a minute to set up, and it can fix most of the common issues right away. Once it’s in place, you’ll enjoy a much smoother and more reliable retro gaming experience.