: The most famous "Early North American" BIOS from the original 1995 PlayStation release. While highly compatible, it lacks some of the internal software refinements found in later versions.
: From the North American "DualShock" hardware revision. This BIOS includes the "SoundScope" light show program for the CD player menu, though this feature is rarely relevant in emulation. : The most famous "Early North American" BIOS
Emulators do not include BIOS files because they are copyrighted software owned by Sony. Without them, emulators use "High-Level Emulation" (HLE), which can cause: emulators use "High-Level Emulation" (HLE)