Sony - PlayStation ✔

• Alias: PS, PS1, PSX
• Emulator: lr-pcsx-rearmed
• Rom Folder: PS
• Extensions: .chd .pbp .bin/.cue .img .mdf .toc .cbn .m3u .ccd (must be lowercase)
• Bios: PSXONPSP660.bin, scph101.bin, scph7001.bin, scph5501.bin, scph1001.bin
• Recommended Romset: "files for CHD-PSX-USA"

Roms in .bin format must have accompanying .cue files or they will not be displayed.
Onion can generate .cue files automatically (Apps > Tweaks > Tools > Generate Cue Files for PSX Games).
Alternatively, you can create .cue files using a free online tool such as cue-maker.

All Bios files are 512kb in size and are case sensitive, they must be named exactly as shown above.
Using the PSXONPSP660.bin bios is recommended for best compatibility.
If you experience issues loading games, you can use md5 checker to verify your bios files against the md5sum provided in the official core documentation.

Notes on performance

• Rewind and Fast Forward capability should be disabled while playing PSX as performance may suffer greatly.

• PAL/EUR games run at 50fps, NTSC/USA/JP games run at 60fps. This is by design and as per original hardware.

• Some titles (e.g. Looney Tunes Sheep Rider, Jedi Power Battles, and 2xtreme/espn extreme games) need to have SMC Checks disabled or games will eventually slow down and crash. Go to RetroArch Quick Menu (MENU+SELECT while in-game), select Options and toggle on (Speed Hack) Disable SMC Checks.