mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-10 13:33:24 -05:00
Abdessamad Derraz
11da070128
Upstream moved under 145 profiles: 679 refs shifted and 452 followed a renamed file, against 6,483 that still anchor where they were written. The recale rewrites the located ranges only, keeping the annotations and the sentences that carry them, and 106 pins advance in the same commit because refs and source_commit name one revision or the profile describes two at once. Nothing here was guessed. The 183 refs that are CHANGED, GONE or AMBIGUOUS are untouched, and the 57 profiles holding them keep their old pin until someone reads the diff: profile_sync refuses to recale a profile while any of its refs needs a re-read. trident kept its pin too, its annotated ref being one the writer will not rewrite.
67 lines
2.5 KiB
YAML
67 lines
2.5 KiB
YAML
emulator: gpSP
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type: libretro
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core_classification: community_fork
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source: "https://github.com/libretro/gpsp"
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upstream: "https://github.com/davidgfnet/gpsp"
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profiled_date: "2026-03-23"
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source_commit: "8d268a6bb2cd799f8f2791ebb544a7ef550cfc6f"
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core_version: "Git"
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display_name: "Nintendo - Game Boy Advance (gpSP)"
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cores:
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- gpsp
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systems:
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- nintendo-gba
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notes: |
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gpSP is a Game Boy Advance emulator originally by Exophase, forked by
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notaz for GP2X/Pandora, now maintained by davidgfnet for libretro.
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Ships a built-in open-source BIOS (bios/open_gba_bios.bin) compiled
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from bios/source/ that covers most games.
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The core option gpsp_bios controls BIOS selection:
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auto (default) - try official gba_bios.bin, fall back to built-in
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builtin - always use the built-in open-source BIOS
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official - try gba_bios.bin, warn and fall back to built-in if missing
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BIOS loading path (libretro/libretro.c:1200-1236):
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1. Resolve system directory (RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY)
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2. Append "/gba_bios.bin"
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3. load_bios() reads 0x4000 (16 KB) into bios_rom[]
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4. Sanity check: bios_rom[0] must be 0x18 (ARM branch opcode)
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5. On failure, memcpy open_gba_bios_rom[] as fallback
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The official BIOS improves compatibility for games that rely on
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precise SWI behavior or BIOS checksum verification.
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Upstream (notaz/Exophase) required the official BIOS with no fallback.
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The built-in open-source BIOS is a davidgfnet/libretro addition.
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files:
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- name: gba_bios.bin
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system: nintendo-gba
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required: false
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hle_fallback: true
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size: 16384
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description: "Official GBA BIOS"
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note: "Built-in open-source BIOS used as fallback. Real BIOS needed for full SWI accuracy and boot animation."
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source_ref: "libretro/libretro.c:1214, gba_memory.c:2568-2580"
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platform_details:
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gba:
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bios_size: 16384
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hle_bios: true
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source_ref: "libretro/libretro.c:1200-1236, bios/source/core.s"
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note: |
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The built-in BIOS (open_gba_bios_rom, 16 KB) is an open-source
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reimplementation compiled from bios/source/. It implements most
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SWI calls (SoftReset, RegisterRamReset, Halt, VBlankIntrWait,
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arithmetic, decompression, sound, multiboot).
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No hash or checksum verification is performed. The only check
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is bios_rom[0] == 0x18 (ARM branch at reset vector).
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The bios_type enum (main.h:56-61) defines three modes:
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auto_detect - try official first, fall back to built-in
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builtin_bios - skip file load entirely, use open_gba_bios_rom
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official_bios - try file, warn on failure, still fall back
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