mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-21 03:09:08 -05:00
Abdessamad Derraz
b3b3880c19
Profiles that read two repositories, a libretro port and its upstream, now prefix each citation with source or upstream, decided by which tree carries the cited value at its pin. The emulator pages use the word to tell libretro glue, emulator code as the port carries it, and the upstream emulator apart.
263 lines
9.0 KiB
YAML
263 lines
9.0 KiB
YAML
emulator: Geolith
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type: libretro
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core_classification: official_port
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source: "https://github.com/libretro/geolith-libretro"
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upstream: "https://gitlab.com/jgemu/geolith"
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profiled_date: "2026-08-07"
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source_commit: "194024931935eff2092e36fc4f8e53e62ed11097"
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upstream_commit: "1bb5a84fbd87dc1f1c510cb3ff81332573e22452"
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core_version: "0.4.1"
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display_name: "SNK - Neo Geo AES/MVS (Geolith)"
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cores:
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- geolith
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systems:
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- snk-neogeo-mvs
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- snk-neogeo-aes
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- snk-neogeo-cd
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notes: |
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Geolith emulates the Neo Geo AES, MVS, CD, and CDZ. Cartridge systems use
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.NEO format ROMs, CD systems use .cue or .chd disc images. System ROMs come
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from MAME-format ZIP archives in the system directory.
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Cartridge content opens aes.zip (System Type = AES, default) or neogeo.zip
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(MVS and Universe BIOS) (libretro/libretro.c:1222-1225). CD content opens
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neocd.zip (Front/Top Loader) or neocdz.zip (CDZ, default, and CD Universe
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BIOS) (libretro/libretro.c:1213-1221). Front/Top Loader additionally reads
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000-lo.lo from neocdz.zip, so neocdz.zip is needed in every CD mode
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(libretro/libretro.c:1232-1239). The Irritating Maze in MVS mode loads
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236-bios.sp1 from irrmaze.zip for trackball support. Without it the game
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runs but the trackball does not work (libretro/libretro.c:1281-1292).
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Inside the opened archive, members are extracted by exact filename
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(src/geo.c:174-271). One 68K BIOS is selected by system type and region
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(defaults: System Type AES, Region USA):
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- AES Japan: neo-po.bin
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- AES other regions: neo-epo.bin
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- MVS USA: sp-u2.sp1
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- MVS Japan: japan-j3.bin
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- MVS Asia: sp-45.sp1
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- MVS Europe: sp-s2.sp1
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- Universe BIOS: uni-bios_4_0.rom
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- CD Front Loader: front-sp1.bin
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- CD Top Loader: top-sp1.bin
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- CDZ: neocd.bin
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- CD Universe BIOS: uni-bioscd33.rom
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000-lo.lo is required in every mode. Only the Front/Top Loader tolerates
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its absence from neocd.zip because it comes from neocdz.zip instead
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(src/geo.c:234-243, 273-285). sfix.sfix and sm1.sm1 are required for MVS
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and Universe BIOS modes only (src/geo.c:245-267).
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The core performs no hash or size validation on System ROMs. CD BIOS family
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detection and the optional CD speed hack patches use byte patterns and
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apply only when the 68K BIOS is at least 512 KiB (src/geo_cd.c:1888-1910,
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1904-1924). Upstream declares the expected archive MD5s through the Jolly
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Good API BIOS list (jg.c:220-231), and the md5 fields on the archives below
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are copied from it.
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files:
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# -----------------------------------------------------------
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# BIOS archives (MAME format, opened by name in system dir)
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# -----------------------------------------------------------
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- name: "aes.zip"
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system: snk-neogeo-aes
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required: true
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md5: "ad9585c72130c56f04ae26aae87c289d"
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note: "Neo Geo AES System ROMs. Opened when System Type is AES (default)."
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source_ref: "source libretro/libretro.c:1222-1225, upstream jg.c:221-222"
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- name: "neogeo.zip"
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system: snk-neogeo-mvs
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required: true
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md5: "00dad01abdbf8ea9e79ad2fe11bdb182"
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note: "Neo Geo MVS System ROMs. Opened for MVS and Universe BIOS modes."
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source_ref: "source libretro/libretro.c:1222-1225, upstream jg.c:223-224"
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- name: "neocd.zip"
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system: snk-neogeo-cd
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required: false
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md5: "006a881532f2caffc3fe9fb5593f2ed5"
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note: "Neo Geo CD Front/Top Loader System ROMs. Opened only when CD System is front or top loader."
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source_ref: "source libretro/libretro.c:1213-1220, upstream jg.c:225-226"
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- name: "neocdz.zip"
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system: snk-neogeo-cd
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required: true
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md5: "b31a246b69493c35194fe0bac120dc37"
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note: "Neo Geo CDZ System ROMs. Opened for CDZ (default) and CD Universe BIOS, and also supplies 000-lo.lo to Front/Top Loader mode."
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source_ref: "source libretro/libretro.c:1213-1239, upstream jg.c:227-228"
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- name: "irrmaze.zip"
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system: snk-neogeo-mvs
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required: false
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md5: "0e369df30a70e45547cef9e4078dc511"
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note: "The Irritating Maze auxiliary BIOS. Loaded in MVS mode for trackball support. On failure the game runs without trackball."
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source_ref: "source libretro/libretro.c:1281-1292, upstream jg.c:229-230"
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# -----------------------------------------------------------
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# aes.zip members
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# -----------------------------------------------------------
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- name: "neo-epo.bin"
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archive: aes.zip
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system: snk-neogeo-aes
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required: true
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size: 131072
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crc32: "d27a71f1"
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note: "AES 68K BIOS, non-Japan regions. Default for Region USA."
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source_ref: "source src/geo.c:178-181"
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- name: "neo-po.bin"
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archive: aes.zip
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system: snk-neogeo-aes
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required: false
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size: 131072
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crc32: "16d0c132"
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note: "AES 68K BIOS, Japan region."
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source_ref: "source src/geo.c:178-181"
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- name: "000-lo.lo"
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archive: aes.zip
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system: snk-neogeo-aes
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required: true
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size: 131072
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crc32: "5a86cff2"
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note: "Zoom lookup table."
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source_ref: "source src/geo.c:234-243"
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# -----------------------------------------------------------
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# neogeo.zip members
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# -----------------------------------------------------------
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- name: "sp-u2.sp1"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: true
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size: 131072
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crc32: "e72943de"
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note: "MVS 68K BIOS, USA. Default for Region USA."
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source_ref: "source src/geo.c:183-198"
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- name: "japan-j3.bin"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: false
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size: 131072
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crc32: "dff6d41f"
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note: "MVS 68K BIOS, Japan."
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source_ref: "source src/geo.c:183-198"
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- name: "sp-45.sp1"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: false
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size: 524288
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crc32: "03cc9f6a"
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note: "MVS 68K BIOS, Asia."
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source_ref: "source src/geo.c:183-198"
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- name: "sp-s2.sp1"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: false
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size: 131072
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crc32: "9036d879"
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note: "MVS 68K BIOS, Europe."
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source_ref: "source src/geo.c:183-198"
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- name: "uni-bios_4_0.rom"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: false
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size: 131072
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crc32: "a7aab458"
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note: "Universe BIOS 4.0, loaded when System Type is Universe BIOS. Emulated hardware type set by the geolith_unibios_hw option."
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source_ref: "source src/geo.c:200-203"
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- name: "000-lo.lo"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: true
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size: 131072
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crc32: "5a86cff2"
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note: "Zoom lookup table."
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source_ref: "source src/geo.c:234-243"
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- name: "sfix.sfix"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: true
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size: 131072
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crc32: "c2ea0cfd"
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note: "System FIX layer tiles. Loaded for MVS and Universe BIOS modes."
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source_ref: "source src/geo.c:245-255"
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- name: "sm1.sm1"
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archive: neogeo.zip
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system: snk-neogeo-mvs
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required: true
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size: 131072
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crc32: "94416d67"
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note: "Z80 sound BIOS. Loaded for MVS and Universe BIOS modes."
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source_ref: "upstream src/geo.c:257-267"
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# -----------------------------------------------------------
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# neocd.zip members
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# -----------------------------------------------------------
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- name: "front-sp1.bin"
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archive: neocd.zip
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system: snk-neogeo-cd
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required: false
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note: "Neo Geo CD Front Loader 68K BIOS."
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source_ref: "source src/geo.c:204-207"
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- name: "top-sp1.bin"
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archive: neocd.zip
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system: snk-neogeo-cd
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required: false
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note: "Neo Geo CD Top Loader 68K BIOS."
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source_ref: "source src/geo.c:208-211"
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- name: "000-lo.lo"
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archive: neocd.zip
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system: snk-neogeo-cd
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required: false
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size: 131072
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crc32: "5a86cff2"
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note: "Zoom lookup table. Extraction is attempted but absence is tolerated in Front/Top Loader mode, where the copy in neocdz.zip is used instead."
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source_ref: "source src/geo.c:234-243"
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# -----------------------------------------------------------
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# neocdz.zip members
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# -----------------------------------------------------------
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- name: "neocd.bin"
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archive: neocdz.zip
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system: snk-neogeo-cd
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required: true
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note: "Neo Geo CDZ 68K BIOS. Default for CD content."
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source_ref: "source src/geo.c:212-215"
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- name: "uni-bioscd33.rom"
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archive: neocdz.zip
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system: snk-neogeo-cd
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required: false
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note: "Universe BIOS CD 3.3, loaded when CD System is CD Universe BIOS."
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source_ref: "source src/geo.c:216-219"
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- name: "000-lo.lo"
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archive: neocdz.zip
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system: snk-neogeo-cd
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required: true
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size: 131072
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crc32: "5a86cff2"
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note: "Zoom lookup table. Read from neocdz.zip in every CD mode, including Front/Top Loader."
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source_ref: "source src/geo.c:234-243, 273-285, source libretro/libretro.c:1232-1239"
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# -----------------------------------------------------------
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# irrmaze.zip member
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# -----------------------------------------------------------
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- name: "236-bios.sp1"
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archive: irrmaze.zip
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system: snk-neogeo-mvs
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required: false
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note: "The Irritating Maze auxiliary 68K BIOS, replaces the MVS BIOS to enable trackball input."
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source_ref: "source src/geo.c:286-299, source libretro/libretro.c:1281-1292"
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