If you own a physical PS1, you can dump your own BIOS using a tool like BIOS Dumper on a modded PS2 or via a Raspberry Pi connected to the PS1's parallel port. This yields a 100% legal, truly "new" dump.
Many PS1 games used Red Book audio (actual CD soundtracks). If you use a standard ISO, you lose the background music in games like Ridge Racer or Castlevania: Symphony of the Night . The BIN format keeps everything intact.
Once you have extracted the file using Ps1rombin, you need to move it to your emulation device.
firmware. While traditional emulators once relied on model-specific dumps like the North American SCPH1001.bin
: The most "legal" way to obtain these files is to dump them from your own physical PS1 console using tools like a MemCard PRO.
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Once installed, navigate to the RPCS3 folder: dev_flash/ps1_emu/ . The ps1_rom.bin file will be located there. Using it in Emulators