Tekken 3 was released for the PS1 in 1998. When played via emulation, using the correct BIOS ensures:

Scph1001.bin is a BIOS file for the original PlayStation console. It is a crucial system file that allows the console to function properly. The file is specific to the PlayStation model SCPH-1001 and is required to play games like Tekken 3.

: It provides the highest level of compatibility and performance.