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https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
1334e84a00
One run of profile_sync --all --rebase-refs --fresh. Every guard held: no ref to review, no prose left under an older pin, no file name or hash literal gained in a cited file since the pin, no built_by pin and no pin keyed by build mode. The site's record of cited source paths is rebuilt with them.
43 lines
1.8 KiB
YAML
43 lines
1.8 KiB
YAML
emulator: mGBA Splitscreen
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type: libretro
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core_classification: community_fork
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source: "https://github.com/Spuds0588/mgba-splitscreen"
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upstream: "https://github.com/mgba-emu/mgba"
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profiled_date: "2026-10-04"
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source_commit: "f1d5975d77285f77affbfe64b7050ebd5c4b6a77"
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upstream_commit: "afd6f14eaf8bd35214ed3fb9dc69a92bfc3877a9"
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core_version: "0.1.0"
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display_name: "Nintendo - Game Boy Advance (mGBA Splitscreen)"
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cores:
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- mgba_splitscreen
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systems:
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- nintendo-gba
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notes: |
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mGBA Splitscreen is a fork of mGBA that runs 2-4 linked GBA cores in a
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single libretro instance over mGBA's lockstep SIO driver. Built from
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the upstream mGBA tree with -DBUILD_LIBRETRO_SPLITSCREEN=ON
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(CMakeLists.txt:1036-1058), the fork adds the mgba-splitscreen link
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fixes (Four Swords handshake assist and a gated deadlock kick) on top
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of mGBA's library layer. The player instances live in
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src/platform/libretro-splitscreen/instances.c and reject anything that
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is not a GBA ROM (src/platform/libretro-splitscreen/instances.c:114-119).
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The splitscreen wrapper never performs its own BIOS lookup. Each
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per-player mCore reaches mGBA's shared GBA core, which looks for
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gba_bios.bin in the system directory and uses the built-in HLE BIOS
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(src/gba/hle-bios.c) when it is missing. The core-info declares one
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optional firmware entry (gba_bios.bin) and only accepts the .gba
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extension, so GB/GBC/SGB BIOS files that upstream mGBA supports are
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unreachable here.
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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 # 16 KB (GBA_SIZE_BIOS)
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validation: [size]
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note: "GBA BIOS, same file upstream mGBA uses. HLE replacement built in."
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source_ref: "source src/platform/libretro-splitscreen/mgba_splitscreen_libretro.info:34-37 (firmware0_desc/path/opt), source src/gba/gba.c:520-551 (GBALoadBIOS, inherited from mGBA core)"
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