cases:
  psx-override-bios:
    title: Region-free override BIOS
    reason: An option swaps in a region-free image for every region.
systems:
  sony-playstation:
    psxcore:
      routes:
        south-korea: japan
      default_region: north-america
      region_free: [openbios.bin]
      source_ref: "example/psxcore@11111111 core.c:10-20"
      keep_all_regions:
        - case: psx-override-bios
          condition: option
          option: psxcore_override
          default: disabled
          keeps: region-free-files
          files: [openbios.bin]
          source_ref: "example/psxcore@11111111 core.c:30"