PCSX1 - RetroBIOS

Type	libretro
Classification	Community forks
Source	https://github.com/libretro/pcsx1-libretro
Upstream	https://github.com/notaz/pcsx_rearmed
Version	r22
Profiled	2026-03-24
Cores	pcsx1
Systems	sony-playstation

Technical 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.

3 files | 0 required, 3 optional | 3 in repo, 0 missing | 3 with HLE fallback

scph1001.bin optional in repo HLE fallback
SCPH-1001 (v2.2 12-04-95 A)

• Size: 512.0 KB
• Validation: size
• Source: frontend/libretro.c:1229 (bios[0]), :1181 (size check)
• Platforms: batocera, lakka, recalbox, retroarch, retrodeck, retropie, romm

scph5501.bin optional in repo HLE fallback
SCPH-5501 (v3.0 11-18-96 A)

• Size: 512.0 KB
• Validation: size
• Source: frontend/libretro.c:1229 (bios[1]), :1181 (size check)
• Platforms: batocera, emudeck, lakka, recalbox, retroarch, retrodeck, retropie, romm

scph7001.bin optional in repo HLE fallback
SCPH-7001 (v4.1 12-16-97 A)

• Size: 512.0 KB
• Validation: size
• Source: frontend/libretro.c:1229 (bios[2]), :1181 (size check)
• Platforms: batocera, lakka, recalbox, retroarch, retrodeck, retropie, romm

Generated on 2026-04-03T20:37:39Z