mirror of
https://github.com/Abdess/retroarch_system.git
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283 lines
10 KiB
YAML
283 lines
10 KiB
YAML
emulator: Flycast Dojo
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type: standalone
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core_classification: enhanced_fork
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source: "https://github.com/blueminder/flycast-dojo"
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upstream: "https://github.com/flyinghead/flycast"
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source_commit: "d0e47e572b1e7b355e88bda8308c89d0c5156cbf"
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upstream_commit: "a172e0001351dfbc49b86860a13d5390b1c493fe"
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logo: "https://raw.githubusercontent.com/blueminder/flycast-dojo/master/shell/linux/flycast-dojo.png"
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profiled_date: "2026-08-08"
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core_version: "dojo-7-preview4"
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display_name: "Sega - Dreamcast/Naomi (Flycast Dojo)"
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cores:
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- flycast-dojo
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systems:
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- sega-dreamcast
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- sega-naomi
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- sega-naomi2
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- sega-atomiswave
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mode: standalone
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verification: existence
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notes: |
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Fork of Flycast adding rollback and delay netplay, a lobby, spectating,
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replay recording and a training mode.
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Every file below is read from the data directory, flat, with no subfolder.
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The directory is <exe>/data on Windows, $XDG_DATA_HOME/flycast-dojo or
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$HOME/.local/share/flycast-dojo on Linux, /flycast-dojo/data on Switch.
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$FLYCAST_ROOT overrides the root, $FLYCAST_BIOS_PATH adds search paths,
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and ContentPath entries are searched after the data directory.
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ref: core/linux-dist/main.cpp:157-365, core/windows/winmain.cpp:245-266,
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core/stdclass.cpp:78-97
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The boot ROM prefix follows the platform (core/hw/holly/sb_mem.cpp:27-42):
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Dreamcast -> dc_
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NAOMI -> naomi_
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NAOMI 2 -> naomi2_
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Atomiswave -> aw_
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Boot ROM search pattern (sb_mem.cpp:254,269):
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{prefix}boot.bin, {prefix}boot.bin.bin, {prefix}bios.bin, {prefix}bios.bin.bin
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Flash search takes a single name, {prefix}nvmem.bin (sb_mem.cpp:214), or
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{prefix}nvmem.bin.net once Dojo mode is on (sb_mem.cpp:195).
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The aw_ prefix never reaches a filename: sb_mem.cpp:267 skips the boot ROM
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search on Atomiswave, whose BIOS comes from awbios.zip, and its flash
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follows the per-game arcade path (sb_mem.cpp:216).
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Arcade BIOS archives are opened as <name>.zip, then <name>.7z
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(core/hw/naomi/naomi_cart.cpp:69-71). Each ROM inside is looked up by CRC
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then by filename; the crc field of every BIOS blob is left at zero, so the
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filename decides. No hash is checked on an archive.
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NAOMI 2 is a platform of its own here: naomi_cart_GetPlatform returns
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DC_PLATFORM_NAOMI2 for any game whose bios field is naomi2
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(naomi_cart.cpp:646-657), which selects the naomi2_ prefix and naomi2.zip.
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Under netplay, match playback or match recording the Dreamcast boot ROM is
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skipped and reios is forced, so both sides start from the same state.
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Product numbers T0019M and T-31101N are the two exceptions that keep the
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real BIOS (sb_mem.cpp:237-259).
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BIOS[] also declares airlbios and naomigd. No entry of Games[] carries
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either name in its bios field and loadBios is only ever called with that
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field or the literal naomi, so neither archive is opened. The Airline
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Pilots sets use the naomi BIOS (naomi_roms.cpp:821-828,854-862).
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flycast_roms.json ships beside the binary and lists an md5 for naomi.zip,
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naomi2.zip and awbios.zip. The only function reading them, CompareBIOS,
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has no live caller (DojoFile.cpp:228-242, DojoGui.cpp:1314,1369).
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Distributed with the emulator and fetched at build time: data/default.zip
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and the per-game .nvmem/.eeprom/.nvmem2 netplay files from
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flycast-netplay-nvmem, data/game_values/*.json from
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flycast-dojo-game-values, training/*.lua from flycast-dojo-training, and
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flycast_roms.json.
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ref: CMakeLists.txt:1787-1834, .github/workflows/c-cpp.yml:171-192,
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shell/linux/make-appimage.sh:136-149
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Also read but never user supplied: buttons.png overrides an on-screen
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button sheet compiled into the binary (core/rend/osd.cpp:152-171),
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mappings/*.cfg are written by the input configuration screen
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(core/input/mapping.cpp:382-445), and flycast.lua is a user script
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(core/lua/lua.cpp:746-761).
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files:
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# -------------------------------------------------------
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# Sega Dreamcast
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# -------------------------------------------------------
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- name: dc_boot.bin
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aliases: ["dc_boot.bin.bin", "dc_bios.bin", "dc_bios.bin.bin"]
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system: sega-dreamcast
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required: false
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hle_fallback: true
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min_size: 2097152
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validation: [size]
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note: "Boot ROM. reios takes over when it is absent, and is forced under netplay, match playback and match recording. Read fails below 2 MB."
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source_ref: "core/hw/holly/sb_mem.cpp:269, core/emulator.cpp:566-569, core/hw/flashrom/flashrom.cpp:23-33"
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- name: dc_nvmem.bin
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system: sega-dreamcast
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required: false
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min_size: 131072
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validation: [size]
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note: "Flash memory. Created and filled with factory settings when absent."
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source_ref: "core/hw/holly/sb_mem.cpp:214, core/hw/holly/sb_mem.cpp:111-187"
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- name: dc_nvmem.bin.net
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system: sega-dreamcast
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required: false
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min_size: 131072
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validation: [size]
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note: "Flash memory used once Dojo mode is enabled, keeping netplay settings apart from local ones. Absent, the emulator logs that the flash is missing and creates it: the factory partition is rewritten, the user partition erased and ISP blocks and a random console id seeded (core/hw/flashrom/flashrom.h:494-524). Nothing distributed seeds it, and SaveRomFiles writes dc_nvmem.bin, never this name (core/hw/holly/sb_mem.cpp:279-286)."
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source_ref: "core/hw/holly/sb_mem.cpp:189-230"
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- name: font.bin
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system: sega-dreamcast
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required: false
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note: "System font served by the reios font syscall. A built-in font is used when absent."
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source_ref: "core/reios/reios.cpp:741-764, core/oslib/oslib.cpp:195-198"
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# -------------------------------------------------------
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# Sega NAOMI
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# -------------------------------------------------------
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- name: naomi_boot.bin
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aliases: ["naomi_boot.bin.bin", "naomi_bios.bin", "naomi_bios.bin.bin"]
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system: sega-naomi
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required: false
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min_size: 2097152
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validation: [size]
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note: "Flat boot ROM. Games whose bios field is null run from it when naomi.zip is missing."
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source_ref: "core/hw/holly/sb_mem.cpp:269, core/hw/naomi/naomi_cart.cpp:202-207"
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- name: naomi.zip
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system: sega-naomi
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required: true
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category: bios_zip
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note: "System BIOS archive. 89 game entries name it and abort without it."
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source_ref: "core/hw/naomi/naomi_roms.cpp:84-140, core/hw/naomi/naomi_cart.cpp:194-208"
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contents:
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- name: epr-21576h.ic27
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description: Japan
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size: 2097152
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- name: epr-21577h.ic27
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description: USA
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size: 2097152
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- name: epr-21578h.ic27
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description: Export
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size: 2097152
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- name: epr-21579d.ic27
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description: Korea
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size: 2097152
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- name: f355bios.zip
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system: sega-naomi
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required: false
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category: bios_zip
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note: "Ferrari F355 Challenge twin. Required by f355twin, f355twinp and f355twn2."
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source_ref: "core/hw/naomi/naomi_roms.cpp:47-54, core/hw/naomi/naomi_roms.cpp:1689,1725,1761"
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contents:
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- name: epr-22849.ic27
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description: Japan
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size: 2097152
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- name: epr-22850.ic27
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description: USA
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size: 2097152
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- name: epr-22851.ic27
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description: Export
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size: 2097152
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- name: f355dlx.zip
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system: sega-naomi
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required: false
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category: bios_zip
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note: "Ferrari F355 Challenge deluxe. Required by f355."
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source_ref: "core/hw/naomi/naomi_roms.cpp:56-70, core/hw/naomi/naomi_roms.cpp:1645"
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contents:
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- name: epr-21862.ic27
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description: Japan
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size: 2097152
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- name: epr-21863.ic27
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description: USA
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size: 2097152
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- name: epr-21864.ic27
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description: Export
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size: 2097152
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- name: hod2bios.zip
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system: sega-naomi
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required: false
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category: bios_zip
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note: "House of the Dead 2. Required by hotd2, hotd2o, hotd2e and hotd2p."
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source_ref: "core/hw/naomi/naomi_roms.cpp:72-82, core/hw/naomi/naomi_roms.cpp:2003,2042,2081,2120"
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contents:
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- name: epr-21329.ic27
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description: Japan
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size: 2097152
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- name: epr-21330.ic27
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description: USA
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size: 2097152
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- name: epr-21331.ic27
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description: Export
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size: 2097152
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# -------------------------------------------------------
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# Sega NAOMI 2
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# -------------------------------------------------------
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- name: naomi2_boot.bin
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aliases: ["naomi2_boot.bin.bin", "naomi2_bios.bin", "naomi2_bios.bin.bin"]
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system: sega-naomi2
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required: false
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min_size: 2097152
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validation: [size]
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note: "Flat boot ROM for the NAOMI 2 platform."
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source_ref: "core/hw/holly/sb_mem.cpp:35-36,269"
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- name: naomi2.zip
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system: sega-naomi2
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required: true
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category: bios_zip
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note: "System BIOS archive. All 43 NAOMI 2 game entries name it and abort without it."
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source_ref: "core/hw/naomi/naomi_roms.cpp:166-172, core/hw/naomi/naomi_cart.cpp:646-657"
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contents:
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- name: epr-23605c.ic27
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description: Japan
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size: 2097152
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- name: epr-23607c.ic27
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description: USA
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size: 2097152
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- name: epr-23608c.ic27
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description: Export
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size: 2097152
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# -------------------------------------------------------
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# Sammy Atomiswave
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# -------------------------------------------------------
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- name: awbios.zip
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system: sega-atomiswave
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required: true
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category: bios_zip
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note: "System BIOS archive. All 34 Atomiswave game entries name it and abort without it."
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source_ref: "core/hw/naomi/naomi_roms.cpp:38-45, core/hw/naomi/naomi_cart.cpp:194-208"
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contents:
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- name: bios0.ic23
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size: 131072
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# -------------------------------------------------------
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# Input
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# -------------------------------------------------------
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- name: gamecontrollerdb.txt
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required: false
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category: game_data
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note: "SDL controller mapping database, read from the data directory then the config directory. Not part of the release archive. SDL built-in mappings are used when absent."
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source_ref: "core/sdl/sdl.cpp:183-191"
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platform_details:
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dreamcast:
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bios_size: 2097152
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flash_size: 131072
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ram_size: 16777216
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hle_available: true
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source_ref: "core/emulator.cpp:436-442"
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naomi:
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bios_size: 2097152
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sram_size: 32768
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ram_size: 33554432
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hle_available: false
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source_ref: "core/emulator.cpp:443-449"
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naomi2:
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bios_size: 2097152
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sram_size: 32768
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ram_size: 33554432
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eram_size: 33554432
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hle_available: false
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source_ref: "core/emulator.cpp:450-458"
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atomiswave:
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bios_size: 131072
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sram_size: 131072
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ram_size: 16777216
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hle_available: false
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source_ref: "core/emulator.cpp:459-465"
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