using the Beetle PSX or DuckStation cores) cannot find the required BIOS firmware to run North American (NTSC-U) games Why this happens
The scph5501.bin file is a BIOS (Basic Input/Output System) file for the original PlayStation console. The BIOS is a crucial component of the console, responsible for initializing the hardware and providing a interface for the operating system. In the context of PlayStation emulation, the BIOS file is required to mimic the behavior of the original console. scph5501.bin missing