swanstation - RetroBIOS¶
Technical notes
Fork of DuckStation maintained by the libretro community after stenzek removed libretro support. Frozen at an early DuckStation state.
Boot loads a BIOS image; when none is found a built-in OpenBIOS copy (dep/openbios) boots instead. ref: src/core/system.cpp:650,678-682
Auto-detects BIOS by scanning system_dir for files of known sizes. ref: src/core/host_interface.cpp:136-194 (FindBIOSImageInDirectory) Accepts PS1 (512 KB), PS2 (4 MB), and PS3 (0x3E66F0) BIOS images. Only the first 512 KB are loaded (bios.cpp:84, Image(BIOS_SIZE)). ref: src/core/bios.h:9 (BIOS_SIZE=0x80000, BIOS_SIZE_PS2=0x400000, BIOS_SIZE_PS3=0x3E66F0)
27 known BIOS entries identified by MD5 hash. ref: src/core/bios.cpp:28-71 (s_image_infos) Each entry has: description, region, hash, patch_compatible flag.
Upstream DuckStation has evolved significantly (105 entries, PS2 BIOS, OpenBIOS, priority system). SwanStation is frozen at the fork point.
5 files | 0 required, 5 optional | 5 in repo, 0 missing | 5 with HLE fallback
scph5500.bin optional in repo HLE fallback japan
SCPH-5500 (v3.0 09-09-96 J)
scph5501.bin optional in repo HLE fallback north-america
SCPH-5501, 5503, 7003 (v3.0 11-18-96 A)
scph5502.bin optional in repo HLE fallback europe
SCPH-5502, 5552 (v3.0 01-06-97 E)
psxonpsp660.bin optional in repo HLE fallback world
PSP, SCPH-1000R (v4.5 05-25-00 J)
ps1_rom.bin optional in repo HLE fallback world
PS3 embedded PS1 BIOS (v5.0 06-23-03 A)
- Size: 512.0 KB / 4.0 MB / 3.9 MB
- MD5:
81bbe60ba7a3... - Validation: size, md5
- Source:
src/core/bios.h:9,src/core/bios.cpp:69-70,src/core/bios.cpp:81-90 - Platforms: lakka, recalbox, retroarch, retrodeck, retropie
- Accepts PS1 (512KB), PS2 (4MB), and PS3 (0x3E66F0) sizes. Only first 512KB used.
Generated on 2026-08-23T16:12:06Z