emulator: Supermodel (Sinden fork) type: standalone core_classification: enhanced_fork source: "https://github.com/DirtBagXon/model3emu-code-sinden" upstream: "https://github.com/trzy/Supermodel" author: "DirtBagXon" profiled_date: "2026-10-20" source_commit: "377d259c59c90c0042278aca58603eb4bd7b03f3" upstream_commit: "ddbc3066e077e4c99581d2ab7d3452fd1a603723" core_version: "0.3a-ddbc306-mm DirtBagXon (Sinden)" display_name: "Sega - Model 3 (Supermodel, Sinden fork)" verification: existence cores: - "supermodel3" systems: - "sega-model3" - "real3d-pro1000" notes: | DirtBagXon's Supermodel fork with Sinden light gun support, rebased on trzy's tree at ddbc306, the revision its version string names. RetroPie builds the main branch on x86 and the arm branch everywhere else, the arm branch at commit 454ed3f when the system SDL2 is 2.0.22 or older. The arm branch is a separate, older line (revision 6ae0cf2f237586c4a3cc791514ec1b0f3cd4c56c, "0.3a-8c6af68-arm-mm") and is described in its own paragraph below. Entries carry the main branch. ref: Src/Version.h:32 RetroPie copies Config/Games.xml, and on x86 the Assets directory, into $md_conf_root/arcade/supermodel3 and starts the emulator from there. On Linux the main branch resolves Config/, Assets/, NVRAM/ and Saves/ relative to the working directory when Config/ exists there, otherwise under ~/.supermodel/ when present, otherwise under the XDG config and data homes. ref: Src/OSD/Unix/FileSystemPath.cpp:99-157, Src/OSD/SDL/Main.cpp:120-122 ROM sets are MAME format archives described by Games.xml. The game is chosen by the archive's own file name, which must match a game name, and the parent archive .zip is opened from the same directory. ROMs inside are matched by CRC32. Model 3 boards carry their own program, video, sound and drive board ROMs, so a Model 3 game reads nothing outside its archives. ref: Src/GameLoader.cpp:1044-1101 The main branch also emulates the Real3D Pro-1000 image generator, the hardware the Model 3 graphics derive from. Games.xml declares it as the set pro1000, whose two regions are the flash images of the Pro-1000 SDK update: p1_p4.bin (boot stub and loop code) and p2.bin (INIT ROM). The machine refuses to start without either region. A scsi_rom region is optional, a synthetic image is built when it is absent. ref: Config/Games.xml:1404-1428, Src/Pro1000/Pro1000.cpp:2114-2146, Src/Pro1000/Pro1000.cpp:165-181 Supermodel.ini is optional. It is written from compiled-in defaults when absent. NVRAM/.nv is loaded when present and written on exit. External GLSL shaders are read only when VertexShader or FragmentShader names a file, both default to empty. ref: Src/OSD/SDL/Main.cpp:1407-1427, Src/OSD/SDL/Main.cpp:2356, Src/OSD/SDL/Main.cpp:791-822, Src/OSD/SDL/Main.cpp:1545-1546 The arm branch has no Pro-1000 emulation and no path resolution: the paths Config/Supermodel.ini, Config/Games.xml, NVRAM/.nv and Saves/.st are fixed and relative to the working directory. Crosshairs are drawn as primitives, no Assets bitmap and no Music.xml are read, which is why RetroPie installs Assets on x86 only. Its Games.xml (63 sets, size 158300, sha1 ccbc64e2f5b9aefd89ff9acd7227eff230aed8ed) differs from the main branch copy. files: - name: "Games.xml" path: "Config/Games.xml" required: true bundled: true size: 152608 sha1: "79fa74742f4b18e250c11c1dea5837fdf57cd54c" md5: "f2f5f09ca0a275696319176b4f41b8d6" description: "ROM set definitions" note: "Parsed by the GameLoader constructor. Without it no game is defined, the archive name matches nothing and main returns 1. The path is the GameXMLFile key, so -game-xml-file moves it. The hash is that of Config/Games.xml at the pinned revision, 64 sets, which RetroPie copies on every install. Shipped in the 377d259 Linux, macOS and Windows release archives." source_ref: "upstream Src/OSD/SDL/Main.cpp:121, source Src/OSD/SDL/Main.cpp:1534, source Src/OSD/SDL/Main.cpp:2444-2449, source Src/GameLoader.cpp:601-610, source Src/GameLoader.cpp:1066-1071, source Src/GameLoader.cpp:1111-1113" - name: "p1crosshair.bmp" path: "Assets/p1crosshair.bmp" required: true bundled: true size: 295992 sha1: "581cea232c296c7bd76f3101c3ae1bffdf5abf08" md5: "9012018f50f707c1707009346eb5d18b" description: "Player 1 light gun crosshair texture" note: "Both bitmaps are loaded whatever CrosshairStyle holds, and a failed load aborts startup before the machine is created." source_ref: "upstream Src/OSD/SDL/Crosshair.cpp:34-51, source Src/OSD/SDL/Main.cpp:2499-2506" - name: "p2crosshair.bmp" path: "Assets/p2crosshair.bmp" required: true bundled: true size: 295992 sha1: "13c5e692c7acf2ec8243ac421d58fdf69c6c2370" md5: "866dbf59a0e2d849de2365e1c953cc97" description: "Player 2 light gun crosshair texture" note: "Read in the same call as the player 1 bitmap and equally fatal when it fails to load. Both bitmaps are shipped in the 377d259 release archives." source_ref: "upstream Src/OSD/SDL/Crosshair.cpp:35, source Src/OSD/SDL/Crosshair.cpp:48-51" - name: "Music.xml" path: "Config/Music.xml" required: false bundled: true size: 9224 sha1: "b44ed959fe2948a03d81b98e67ca32f2b4c37e78" md5: "ddb4e23db15dda67539eee24de23de4b" description: "Custom MPEG music track map" note: "Consulted only for a game with a DSB1 or DSB2 board, and skipped when absent. RetroPie does not copy it. Shipped in the 377d259 release archives, the Windows zip with CRLF line endings (sha1 4c556c3a848ef61205a53a9a73ba5e46970d445f)." source_ref: "upstream Src/OSD/SDL/Main.cpp:122, source Src/OSD/SDL/Main.cpp:947, source Src/Sound/MPEG/MpegAudio.cpp:88-102" - name: "pro1000.zip" required: true category: bios_zip system: real3d-pro1000 description: "Real3D Pro-1000 firmware set (SDK flash update, loop code 5.4, INIT ROM 54)" note: "Loaded as the content of the pro1000 machine, named after the set. Required to run the Pro-1000 only, Model 3 games never read it." source_ref: "upstream Config/Games.xml:1404-1428, source Src/Pro1000/Pro1000.cpp:2114-2125, source Src/GameLoader.cpp:1066-1071" contents: - name: "p1_p4.bin" description: "Flash parts 1 and 4, boot stub and loop code, loaded at 0xFFF00000" crc32: "6026a0db" - name: "p2.bin" description: "Flash part 2, INIT ROM, loaded at 0xFFF80000" crc32: "945bbcf5" - name: "3dlogo.cmem" path: "Assets/3dlogo.cmem" required: false system: real3d-pro1000 description: "Pro-1000 SDK logo model, culling data" note: "Read with 3dlogo.pmem into the synthetic SCSI ROM when the set has no scsi_rom region. Both files or neither, one alone is rejected with an error. The machine boots without them." source_ref: "source Src/Pro1000/SyntheticSCSIROM.cpp:102-125, source Src/Pro1000/SyntheticSCSIROM.cpp:232" - name: "3dlogo.pmem" path: "Assets/3dlogo.pmem" required: false system: real3d-pro1000 description: "Pro-1000 SDK logo model, polygon data" source_ref: "source Src/Pro1000/SyntheticSCSIROM.cpp:104-106, source Src/Pro1000/SyntheticSCSIROM.cpp:119-125"