=========================================================================== $NetBSD: MESSAGE,v 1.1 2018/08/11 00:19:58 nia Exp $ Beetle PSX requires the following BIOS files in order to work: * scph5500.bin - SHA256 sum: 9c0421858e217805f4abe18698afea8d5aa36ff0727eb8484944e00eb5e7eadb * scph5501.bin - SHA256 sum: 11052b6499e466bbf0a709b1f9cb6834a9418e66680387912451e971cf8a1fef * scph5502.bin - SHA256 sum: 1faaa18fa820a0225e488d9f086296b8e6c46df739666093987ff7d8fd352c09 In retroarch, you'll need to place them in the System Directory. Alternatively, you can place them in your Content Directory next to the software you are going to run. ===========================================================================