Contentes of this folder:
5 BIOS files for various regions, 2 BIOS files for the PocketStation
scph101.bin                       J061.bin
scph1001.bin                      J110.bin   
scph5500.bin
scph7001.bin
scph75021.bin


Most emulators require BIOS files to work. You can copy & paste them in the same folder(s) as your favourite emulator(s)

The main one you will need is scph1001.bin

scph1001.bin (North America)
scph5500.bin (Japan)
scph7502.bin (Europe)

The other two BIOS files you shouldn't need but I thought I'd include them anyways. They are from North American PlayStations 

And the last 2 BIOS files are for the PK201 emulator for the PocketStation. The PocketStation emulator has to be ran by the Xebra emulator