If you’ve got your emulator and your ROM, though, you may be wondering why it’s not working. You see, some other emulators come with the BIOS file included, but it doesn’t work that way for PlayStation emulators. Think of the PlayStation BIOS file as the activation key for the emulator. Without it, the emulator won’t work, but as soon as you have the BIOS, you’re good to go.

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