Load a Japanese PS2 game ISO (e.g., Ridge Racer V ). If you see the large, silver “PlayStation 2” logo and a smooth boot into the game, your “TOP” BIOS is working.
Not advisable. PCSX2 identifies BIOS by internal checksums, not filenames. However, renaming will not break functionality if the content is correct. sony playstation 2 bios file name scph10000zip top