mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-25 05:09:03 -05:00
Abdessamad Derraz
ef5c3df0fa
v1.8.0 (4e899aa) searches the system directory, then the directory of the loaded game, each for the loose BIOS and then stvbios.zip (ss.cpp:1540-1582). Same files, sizes and hashes.
127 lines
5.4 KiB
YAML
127 lines
5.4 KiB
YAML
emulator: Mednafen STV
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type: libretro
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core_classification: community_fork
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source: "https://github.com/beudbeud/libretro-stv"
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upstream: "https://mednafen.github.io/"
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profiled_date: "2026-10-17"
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source_commit: "4e899aa2951a4714f82523d2d0f00c98599fd574"
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core_version: "v1.8.0"
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display_name: "Sega - ST-V (Mednafen STV)"
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cores:
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- "mednafen_stv"
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systems:
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- "sega-stv"
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- "sega-saturn"
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notes: |
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Libretro core by beudbeud built on the Saturn/ST-V module of Mednafen
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1.32.1, with an Asia ST-V BIOS setting and a stvbios.zip fallback added
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to ss.cpp. Recalbox runs it for ST-V, and the loader also accepts Saturn
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disc images (cue, toc, ccd, chd, m3u).
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retro_init() points filesys.path_firmware at the frontend system
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directory and names the BIOS of every region
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(ref: libretro/libretro.cpp:608-634). The ST-V BIOS is picked by SMPC
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area: Japan, Asia NTSC, Europe PAL, and North America for every other
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area (ref: mednafen/ss/ss.cpp:1521-1531, mednafen/ss/smpc.h:32-40).
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A Saturn disc takes sega_101.bin for Japan and Asia NTSC and
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mpr-17933.bin otherwise (ref: mednafen/ss/ss.cpp:1532-1538).
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The BIOS is searched in the system directory, then in the directory of
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the loaded game. In each, the loose file is tried first and must be
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exactly 524288 bytes. When it is missing or the wrong size, the same
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name is looked up at the root of stvbios.zip in that directory, then
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without the leading slash (ref: mednafen/ss/ss.cpp:1540-1582). With
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ss.bios_sanity on, the default, a file named like one of the five
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Saturn BIOS images must match its SHA-256. The ST-V images are not in
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that table and only the size check applies
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(ref: mednafen/ss/ss.cpp:1586-1633, 2646).
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Saturn games that need the KoF 95 or Ultraman ROM cartridge, and the
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Action Replay 4M Plus cart type, open their ROM from the firmware
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directory under the default names below
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(ref: mednafen/ss/ss.cpp:1421-1423, 1477-1485, 2639-2641).
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files:
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- name: "epr-20091.ic8"
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system: "sega-stv"
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region: [japan]
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required: true
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size: 524288
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validation: [size]
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description: "ST-V BIOS (Japan)"
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source_ref: "libretro/libretro.cpp:629, mednafen/ss/ss.cpp:1523-1524, mednafen/ss/ss.cpp:1556-1562"
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- name: "epr-19854.ic8"
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system: "sega-stv"
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region: [asia-ntsc]
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required: true
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size: 524288
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validation: [size]
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description: "ST-V BIOS (Asia/Taiwan)"
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source_ref: "libretro/libretro.cpp:630, mednafen/ss/ss.cpp:1525-1526, mednafen/ss/ss.cpp:1556-1562"
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- name: "epr-17952a.ic8"
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system: "sega-stv"
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region: [north-america, latin-america, brazil, south-korea, asia-pal]
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required: true
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size: 524288
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validation: [size]
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description: "ST-V BIOS (North America)"
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source_ref: "libretro/libretro.cpp:631, mednafen/ss/ss.cpp:1529-1530, mednafen/ss/ss.cpp:1556-1562"
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note: "Used for every SMPC area other than Japan, Asia NTSC and Europe PAL."
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- name: "epr-17954a.ic8"
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system: "sega-stv"
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region: [europe]
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required: true
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size: 524288
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validation: [size]
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description: "ST-V BIOS (Europe)"
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source_ref: "libretro/libretro.cpp:632, mednafen/ss/ss.cpp:1527-1528, mednafen/ss/ss.cpp:1556-1562"
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- name: "stvbios.zip"
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system: "sega-stv"
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category: bios_zip
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required: false
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description: "ST-V BIOS archive"
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source_ref: "mednafen/ss/ss.cpp:1546-1548, mednafen/ss/ss.cpp:1567-1582"
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note: "Read only when the loose BIOS file in the same directory is missing or not 524288 bytes. The system directory comes before the directory of the loaded game. The member is found by the BIOS file name, and its size is not checked."
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contents:
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- name: "epr-20091.ic8"
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- name: "epr-19854.ic8"
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- name: "epr-17952a.ic8"
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- name: "epr-17954a.ic8"
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- name: "sega_101.bin"
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system: "sega-saturn"
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region: [japan, asia-ntsc]
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required: true
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size: 524288
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sha256: "dcfef4b99605f872b6c3b6d05c045385cdea3d1b702906a0ed930df7bcb7deac"
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validation: [size, sha256]
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description: "Saturn BIOS (Japan)"
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source_ref: "libretro/libretro.cpp:633, mednafen/ss/ss.cpp:1534-1535, mednafen/ss/ss.cpp:1600, mednafen/ss/ss.cpp:1613-1614"
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- name: "mpr-17933.bin"
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system: "sega-saturn"
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region: [north-america, latin-america, brazil, south-korea, asia-pal, europe, oceania]
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required: true
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size: 524288
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sha256: "96e106f740ab448cf89f0dd49dfbac7fe5391cb6bd6e14ad5e3061c13330266f"
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validation: [size, sha256]
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description: "Saturn BIOS (North America/Europe)"
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source_ref: "libretro/libretro.cpp:634, mednafen/ss/ss.cpp:1536-1537, mednafen/ss/ss.cpp:1602, mednafen/ss/ss.cpp:1613-1614"
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- name: "mpr-18811-mx.ic1"
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system: "sega-saturn"
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required: false
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description: "The King of Fighters '95 ROM cartridge"
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source_ref: "mednafen/ss/ss.cpp:1421, mednafen/ss/ss.cpp:1477-1485, mednafen/ss/ss.cpp:2639"
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note: "Opened only for the game that needs the cart, and that game does not start without it."
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- name: "mpr-19367-mx.ic1"
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system: "sega-saturn"
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required: false
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description: "Ultraman ROM cartridge"
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source_ref: "mednafen/ss/ss.cpp:1422, mednafen/ss/ss.cpp:1477-1485, mednafen/ss/ss.cpp:2640"
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note: "Opened only for the game that needs the cart, and that game does not start without it."
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- name: "satar4mp.bin"
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system: "sega-saturn"
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required: false
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description: "Action Replay 4M Plus firmware"
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source_ref: "mednafen/ss/ss.cpp:1423, mednafen/ss/ss.cpp:1477-1485, mednafen/ss/ss.cpp:2641"
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note: "Opened only when the Action Replay 4M Plus cart type is selected."
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