The BIOS (Basic Input/Output System) handles the initial boot sequence, the famous "Towers" startup animation, and the system clock. It also contains the drivers necessary for the emulator to communicate with game data. Without a valid

If you are looking at a file named SCPH70012.bin , how can you tell if it is legitimate without loading it into an emulator?

stands for Basic Input/Output System . In the context of a personal computer, it is the firmware that initializes hardware before loading an operating system. In the context of a video game console like the PlayStation 2, it serves a similar, but more critical, purpose.