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feat: re-profile 40 emulators from fbalpha2012 to holani
This commit is contained in:
Abdessamad Derraz
+38
-76
@@ -2,7 +2,8 @@ emulator: Geargrafx
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type: libretro
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core_classification: official_port
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source: "https://github.com/drhelius/Geargrafx"
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profiled_date: "2026-03-21"
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upstream: "https://github.com/drhelius/Geargrafx"
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profiled_date: "2026-03-23"
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core_version: "1.6.0"
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display_name: "NEC - PC Engine / SuperGrafx / CD (Geargrafx)"
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cores:
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@@ -14,107 +15,68 @@ systems:
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notes: |
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Geargrafx is a PC Engine / TurboGrafx-16 / SuperGrafx / CD-ROM emulator by
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Ignacio Sanchez (drhelius). HuCard games (pce/sgx/hes) run without BIOS.
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Ignacio Sanchez (drhelius). HuCard games run without BIOS.
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CD-ROM games require a System Card BIOS loaded from the system directory.
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The core option "geargrafx_cdrom_bios" selects which card image to use:
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Auto (default, maps to syscard3.pce), System Card 1, System Card 2,
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System Card 3, or Game Express. The load_bios() function in libretro.cpp
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builds the path as "{system_directory}/{filename}" and calls
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CD-ROM games require a System Card BIOS from the system directory. The core
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option "geargrafx_cdrom_bios" selects which card: Auto (default, maps to
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syscard3.pce), System Card 1, System Card 2, System Card 3, or Game Express.
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load_bios() in libretro.cpp builds "{system_directory}/{filename}" and calls
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core->LoadBios(path, true) for the syscard, then always attempts to load
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gexpress.pce as the Game Express BIOS via core->LoadBios(path, false).
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gexpress.pce via core->LoadBios(path, false).
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BIOS validation uses CRC32 against an internal game_db (game_db.h).
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The LoadBios() function in media.cpp reads the file, strips a 512-byte
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header if present, computes CRC32, and looks it up in k_game_database
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entries flagged with GG_GAMEDB_BIOS_SYSCARD or GG_GAMEDB_BIOS_GAME_EXPRESS.
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If the CRC32 is not found, the BIOS is marked as "Unknown" and invalid,
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but loading still proceeds (the file is kept in memory).
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Expected BIOS sizes (from defines.h):
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- System Card: GG_BIOS_SYSCARD_SIZE = 0x40000 (256 KB)
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- Game Express: GG_BIOS_GAME_EXPRESS_SIZE = 0x8000 (32 KB)
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LoadBios() in media.cpp reads the file, strips a 512-byte header if present,
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computes CRC32, and checks it against k_game_database entries flagged with
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GG_GAMEDB_BIOS_SYSCARD or GG_GAMEDB_BIOS_GAME_EXPRESS. If the CRC32 is not
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found, the BIOS is marked as "Unknown" and invalid, but loading still proceeds.
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Size is checked against expected constants and logged if wrong, but not enforced.
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Game Express CD-ROM games are auto-detected via CRC32 lookup in game_db.h
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(GG_GAMEDB_GAME_EXPRESS flag). When detected, the core uses the Game Express
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BIOS instead of the System Card for ROM bank mapping (media.cpp:649).
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Arcade Card games are also detected from game_db.h and enable extra
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0x30000 bytes of Card RAM for Super CD-ROM mode.
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No separate US-specific filenames (syscard3u.pce). US variants must be
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named syscard3.pce/syscard2.pce — recognized by CRC32 validation.
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(GG_GAMEDB_GAME_EXPRESS flag). Arcade Card games are also detected from
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game_db.h and enable extra 0x30000 bytes of Card RAM for Super CD-ROM mode.
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files:
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# -- CD-ROM System Card 3 (Japan) - default --
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- name: "syscard3.pce"
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description: "Super CD-ROM System Card 3.0 (Japan)"
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region: "NTSC-J"
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description: "Super CD-ROM System Card 3.0"
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size: 262144
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required: true
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source_ref: "libretro.cpp:453,471-473, game_db.h:50 CRC32=0x6D9A73EF"
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validation: [size, crc32]
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source_ref: "libretro.cpp:453,471-473, media.cpp:241-307, defines.h:52, game_db.h:50,52"
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notes: >
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Default BIOS for CD-ROM games (cdrom_bios=0 or 3). Recommended for
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most CD-ROM and Super CD-ROM titles. 256 KB expected size.
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# -- CD-ROM System Card 2 (Japan) --
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Default BIOS for CD-ROM games (cdrom_bios Auto or System Card 3).
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game_db.h recognizes Japan (CRC32 6D9A73EF) and USA (CRC32 2B5B75FE)
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variants under the same filename.
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- name: "syscard2.pce"
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description: "CD-ROM System Card 2.0 (Japan)"
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region: "NTSC-J"
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description: "CD-ROM System Card 2.0"
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size: 262144
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required: false
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source_ref: "libretro.cpp:452,462-463, game_db.h:48-49"
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validation: [size, crc32]
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source_ref: "libretro.cpp:452,462-463, media.cpp:241-307, game_db.h:48-49,51"
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notes: >
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cdrom_bios = 'System Card 2'. For older CD-ROM2 titles. game_db.h lists
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two variants: v2.0 (CRC32=0x52520BC6) and v2.1 (CRC32=0x283B74E0).
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# -- CD-ROM System Card 1 (Japan) --
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cdrom_bios = 'System Card 2'. For older CD-ROM2 titles. game_db.h
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recognizes three variants: v2.0 Japan (CRC32 52520BC6), v2.1 Japan
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(CRC32 283B74E0), and USA (CRC32 FF2A5EC3).
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- name: "syscard1.pce"
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description: "CD-ROM System Card 1.0 (Japan)"
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region: "NTSC-J"
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size: 262144
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required: false
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source_ref: "libretro.cpp:451,459-460, game_db.h:47 CRC32=0x3F9F95A4"
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validation: [size, crc32]
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source_ref: "libretro.cpp:451,459-460, media.cpp:241-307, game_db.h:47"
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notes: >
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cdrom_bios = 'System Card 1'. Very early CD-ROM2 games only.
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# -- TurboGrafx CD System Card 3 (US) --
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# Not directly selectable via core option, but game_db.h recognizes it.
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- name: "syscard3.pce"
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sha1_note: "US variant"
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description: "TurboGrafx CD Super System Card 3.0 (US)"
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region: "NTSC-U"
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required: false
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source_ref: "game_db.h:52 CRC32=0x2B5B75FE"
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notes: >
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US variant must be named syscard3.pce. CRC32 validation recognizes it.
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# -- TurboGrafx CD System Card 2 (US) --
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- name: "syscard2.pce"
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sha1_note: "US variant"
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description: "TurboGrafx CD System Card 2.0 (US)"
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region: "NTSC-U"
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required: false
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source_ref: "game_db.h:51 CRC32=0xFF2A5EC3"
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notes: >
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Same constraint as US System Card 3: must be named syscard2.pce.
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Recognized by game_db.h CRC32 validation.
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# -- Game Express CD Card --
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CRC32 3F9F95A4.
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- name: "gexpress.pce"
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description: "Game Express CD Card"
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region: "NTSC-J"
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size: 32768
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required: false
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source_ref: "libretro.cpp:454,468-469,481-482, game_db.h:53-54"
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validation: [size, crc32]
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source_ref: "libretro.cpp:454,468-469,481-482, media.cpp:241-307, defines.h:53, game_db.h:53-54"
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notes: >
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Always loaded alongside the selected System Card BIOS (libretro.cpp:481).
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Required for unlicensed Game Express CD-ROM titles (AV Tanjou,
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Bishoujo Pachinko, etc). game_db.h lists two variants:
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Blue Version (CRC32=0x51A12D90) and Green Version (CRC32=0x16AAF05A).
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Expected size: 32 KB (0x8000).
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Required for Game Express CD-ROM titles. game_db.h recognizes Blue Version
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(CRC32 51A12D90) and Green Version (CRC32 16AAF05A).
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valid_bios_crc32:
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syscard:
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