emulator: PCSX1
type: libretro
core_classification: community_fork
source: "https://github.com/libretro/pcsx1-libretro"
upstream: "https://github.com/notaz/pcsx_rearmed"
profiled_date: "2026-03-24"
core_version: "r22"
display_name: "Sony - PlayStation (PCSX1)"
cores: [pcsx1]
systems: [sony-playstation]
notes: >
  Never-completed fork of PCSX-ReARMed targeting general PC hardware. Experimental, abandoned since 2018.
  HLE BIOS built-in: if no BIOS file found, core warns and falls back to HLE automatically.
  BIOS search order: scph1001.bin, scph5501.bin, scph7001.bin by exact filename, then scans system
  directory for any file matching "scph*" (case-insensitive) with size == 512 KB.
  No region detection, no hash validation. First valid BIOS found is used regardless of region.
  .info declares scph5500/5501/5502 but code explicitly searches scph1001/5501/7001 first.

files:
  - name: "scph1001.bin"
    description: "SCPH-1001 (v2.2 12-04-95 A)"
    required: false
    hle_fallback: true
    size: 524288
    validation: [size]
    source_ref: "frontend/libretro.c:1229 (bios[0]), :1181 (size check)"

  - name: "scph5501.bin"
    description: "SCPH-5501 (v3.0 11-18-96 A)"
    required: false
    hle_fallback: true
    size: 524288
    validation: [size]
    source_ref: "frontend/libretro.c:1229 (bios[1]), :1181 (size check)"

  - name: "scph7001.bin"
    description: "SCPH-7001 (v4.1 12-16-97 A)"
    required: false
    hle_fallback: true
    size: 524288
    validation: [size]
    source_ref: "frontend/libretro.c:1229 (bios[2]), :1181 (size check)"

  # Dynamic scan fallback: after the 3 named files, find_any_bios() scans the
  # system directory for any file starting with "scph" (case-insensitive) that
  # is exactly 512 KB. This covers scph5500.bin, scph5502.bin, scph3000.bin, etc.