If you accidentally download scph-70000-bios-v12-jap-200.bin by mistake, NTSC-U/C games will display an error: "This disc cannot be played because of region restrictions." The USA version has a specific region byte at offset 0x3C that the emulator checks.
Here is the critical reality of PS2 emulation: Unlike cartridge-based consoles, the PS2 requires a copyrighted firmware to boot. The emulator provides the hardware skeleton (CPU, GPU, RAM), but the BIOS provides the instructions for how to use that skeleton. scph-70012-bios-v12-usa-200.bin
The SCPH-70012 has a separate "EROM" (Extended ROM) for DVD movie playback. If you only have the .bin without the erom.bin , DVD movies in the emulator will freeze at the FBI warning screen. 7. Preservation vs. Piracy: The Philosophical Debate Is archiving scph-70012-bios-v12-usa-200.bin piracy or preservation? If you accidentally download scph-70000-bios-v12-jap-200