mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
e318bb4503
CheckCdrom sets PSX_REGION_US before it reads the licence, and only "Inc." or "Euro pe" move it (libpcsxcore/misc.c:422-453). A Latin American disc boots the US slot, so its four BIOS images carry latin-america and --region br,jp keeps them.
106 lines
4.5 KiB
YAML
106 lines
4.5 KiB
YAML
emulator: PCSX-ReARMed
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type: libretro
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core_classification: embedded_hle
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source: "https://github.com/libretro/pcsx_rearmed"
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upstream: "https://github.com/notaz/pcsx_rearmed"
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profiled_date: "2026-03-25"
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source_commit: "c8816799b50388e61cfe237fe2cdbb7d8175f20a"
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core_version: "r25"
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display_name: "Sony - PlayStation (PCSX ReARMed)"
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cores: [pcsx_rearmed, pcsx_rearmed_neon, pcsx_rearmed_interpreter]
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systems: [sony-playstation]
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notes: >
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HLE BIOS built-in: core option pcsx_rearmed_bios = "HLE" bypasses real BIOS entirely.
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Default is "auto" which searches system dir for listed filenames, then scans all files.
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Region detection reads bytes at offset 0x7ff51: " E" = EU, " J" = JP, else US.
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Three CRC32 hardcoded as JP override: 0x18D0F7D8, 0x3B601FC8, 0x3539DEF6 (psxonpsp, scph1000).
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BIOS validity check: byte pattern at offset 1 (\x00\x08\x3c\x3f) or string "PS compatible" at 0x12c.
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Files named "unirom" (case-insensitive) are explicitly skipped.
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Region fallback: if the matching-region BIOS is missing, any available region BIOS is used over HLE.
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Three region slots: US (index 0), JP (index 1), EU (index 2) stored in Config.Bios[].
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files:
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# -- Region: Japan (PSX_REGION_JP = 1) --
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- name: "scph5500.bin"
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description: "SCPH-5500 (v3.0 09-09-96 J)"
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region: [japan]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[0])"
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note: "Preferred JP BIOS, searched first by exact filename."
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# -- Region: North America (PSX_REGION_US = 0) --
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- name: "scph5501.bin"
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description: "SCPH-5501 (v3.0 11-18-96 A)"
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region: [north-america, latin-america]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[1])"
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note: "Preferred US BIOS, searched first by exact filename. The US slot is the detector's default: a disc takes it for both America licence strings and for any licence that is neither \"Inc.\" (JP) nor \"Euro pe\" (EU), and content without a disc boots it too (libpcsxcore/misc.c:422-453, frontend/libretro.c:2167-2171)."
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# -- Region: Europe (PSX_REGION_EU = 2) --
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- name: "scph5502.bin"
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description: "SCPH-5502 (v3.0 01-06-97 E)"
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region: [europe, oceania]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[2])"
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note: "Preferred EU BIOS, searched first by exact filename."
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# -- Fallback BIOS filenames (searched in order after scph550x) --
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- name: "psxonpsp660.bin"
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description: "PSP embedded PS1 BIOS, filed as the Japanese BIOS"
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region: [japan]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[3]), source frontend/libretro.c:3654-3669 (try_use_bios region guess)"
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note: "The core reads the region out of the image: bytes 0x7ff51 are ' J' in this dump, so it takes the JP slot (' E' takes EU, anything else US), one image per slot, first found kept. The disc licence picks the slot at boot (Config.Bios[Config.PsxRegion]), and a US or EU disc only reaches this file when its own slot is empty. Must be 512 KB."
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- name: "scph101.bin"
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description: "SCPH-101 (v4.4 03-24-00 A) - PSone US"
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region: [north-america, latin-america]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[4])"
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note: "PSone slim model."
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- name: "scph7001.bin"
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description: "SCPH-7001 (v4.1 12-16-97 A)"
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region: [north-america, latin-america]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[5])"
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- name: "scph1001.bin"
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description: "SCPH-1001 (v2.2 12-04-95 A)"
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region: [north-america, latin-america]
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size: 524288
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required: false
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hle_fallback: true
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validation: [size]
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source_ref: "source frontend/libretro.c:3864-3867 (listed_bios[6])"
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note: "Original US model. Last in the explicit filename search list."
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# -- Dynamic scan fallback --
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# After exhausting listed_bios[], the core calls find_any_bios() which scans
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# the entire system directory via opendir/readdir. Any 512 KB file passing the
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# validity check (magic bytes or "PS compatible" string) is accepted and assigned
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# to the detected region slot. This means scph1000.bin, scph3000.bin, scph7002.bin,
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# scph7502.bin, etc. all work without being explicitly listed.
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