mirror of
https://github.com/Abdess/retroarch_system.git
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Every profile now has: - profiled_date: date of source code analysis - core_version: version from libretro-core-info .info files - display_name: human-readable name from .info files 260/260 profiles complete. 294/294 libretro cores covered. Standalone emulators (cemu, rpcs3, xemu, vita3k) versioned manually.
97 lines
3.9 KiB
YAML
97 lines
3.9 KiB
YAML
emulator: Beetle Saturn (Mednafen)
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type: libretro
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core: mednafen_saturn_libretro
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source: "https://github.com/libretro/beetle-saturn-libretro"
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profiled_date: "2026-03-18"
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core_version: "v0.9.45.1"
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display_name: "Sega - Saturn (Beetle Saturn)"
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systems:
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- sega-saturn
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notes: |
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Beetle Saturn is the libretro port of Mednafen's Sega Saturn emulation module.
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Two region-specific BIOS files are used: sega_101.bin for Japan/Asia NTSC,
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mpr-17933.bin for North America, Europe, and all other regions. The core
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returns false from InitCommon() if the BIOS file is missing or not exactly
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512 KB, so both BIOS files are required for full region coverage.
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Region auto-detection reads the disc header and picks the matching BIOS.
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Manual region override is available via beetle_saturn_region core option.
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The KOF95 and Ultraman ROM carts are optional game-specific expansion
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cartridges loaded from the system directory. The Action Replay 4M Plus
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cart (satar4mp.bin) is listed but marked unfinished in source (needs
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CPU UBC emulation).
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BIOS loading: mednafen/ss/ss.cpp InitCommon() lines 920-961.
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Cart loading: mednafen/ss/cart.cpp CART_Init() lines 128-220.
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Firmware path: libretro.cpp MDFN_MakeFName(MDFNMKF_FIRMWARE) -> system dir.
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Default cart ROM filenames: mednafen/settings.cpp MDFN_GetSettingS().
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files:
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# -------------------------------------------------------
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# Saturn BIOS - Japan / Asia NTSC
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# -------------------------------------------------------
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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 # 512 KB
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md5: "85ec9ca47d8f6807718151cbcca8b964"
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note: "Saturn BIOS v1.01 (Japan). Used when region is JP or Asia NTSC."
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source_ref: "mednafen/ss/ss.cpp:928-929"
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# -------------------------------------------------------
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# Saturn BIOS - North America / Europe / other
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# -------------------------------------------------------
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- name: "mpr-17933.bin"
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system: sega-saturn
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region: [north-america, europe, south-korea, asia-pal, brazil, latin-america]
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required: true
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size: 524288 # 512 KB
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md5: "3240872c70984b6cbfda1586cab68dbe"
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note: "Saturn BIOS (NA/EU). Used for all non-JP/Asia-NTSC regions."
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source_ref: "mednafen/ss/ss.cpp:930-931"
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# -------------------------------------------------------
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# King of Fighters '95 ROM cart
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# -------------------------------------------------------
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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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size: 2097152 # 2 MB (0x200000, rom.cpp reads up to this)
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md5: "255113ba943c92a54facd25a10fd780c"
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note: "KOF95 expansion ROM cart. Loaded when cart type set to KOF95."
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source_ref: "mednafen/ss/cart.cpp:157-172, mednafen/settings.cpp:64-65"
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# -------------------------------------------------------
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# Ultraman ROM cart
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# -------------------------------------------------------
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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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size: 2097152 # 2 MB
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md5: "1cd19988d1d72a3e7caa0b73234c96b4"
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note: "Ultraman expansion ROM cart. Loaded when cart type set to Ultraman."
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source_ref: "mednafen/ss/cart.cpp:157-172, mednafen/settings.cpp:66-67"
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# -------------------------------------------------------
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# Action Replay 4M Plus (unfinished)
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# -------------------------------------------------------
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- name: "satar4mp.bin"
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system: sega-saturn
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required: false
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note: "Action Replay 4M Plus firmware. Unfinished in source, needs CPU UBC emulation."
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source_ref: "mednafen/ss/cart.cpp:174-188, mednafen/settings.cpp:68-69"
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platform_details:
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saturn:
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bios_size: 524288 # 512 KB
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rom_cart_size: 2097152 # 2 MB max (rom.cpp)
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workram_low: 1048576 # 1 MB
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workram_high: 1048576 # 1 MB
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bios_address: "0x00000000-0x000FFFFF"
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cart_address: "0x02000000-0x03FFFFFF"
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hle_available: false
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source_ref: "mednafen/ss/ss.cpp:906-908"
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