Triforce (Sega / Nintendo / Namco)¶
A rare joint venture (2002): Sega + Nintendo + Namco around a GameCube motherboard (Japanese DOL-001) + a NAOMI-style media system. Mario Kart Arcade GP, F-Zero AX, Virtua Striker… Long hard to preserve — until Triforce support in Dolphin.
Identification¶
| Field | Value |
|---|---|
| Manufacturers | Sega + Nintendo + Namco (joint venture) |
| Year | 2002 |
| Base | Nintendo GameCube (NTSC-J DOL-001 motherboard, modified IPL) |
| Media | GD-ROM (DIMM variant) loaded into RAM; cartridge variants |
| I/O | JVS |
Architecture (≈ GameCube)¶
| Block | Chip | Role |
|---|---|---|
| CPU | PowerPC Gekko | GameCube base |
| GPU | ATI/ArtX Flipper | 3D rendering |
| Media | media board (DIMM) + GD-ROM | data loaded into RAM on first boot |
| Boot | modified IPL (arcade) | starts the arcade system |
| I/O | JVS | arcade controls |
Most games target the DIMM variant: the game ships on GD-ROM and loads into RAM on first boot. Sega designed the board to reuse its arcade GD-ROM drives (a generic SCSI connector, like NAOMI/Chihiro).
Security & preservation¶
- Media board (DIMM): hardware pairing + battery, logic close to the NAOMI.
- Emulation: Dolphin (the GameCube/Wii emulator) has added Triforce support — a major advance, preservation directly benefiting from the GameCube ecosystem.
- Priority: image the GD-ROMs and back up the media board's data.
Notable games¶
Mario Kart Arcade GP (1/2, with Namco/Bandai), F-Zero AX (2003), Virtua Striker 2002 / Virtua Striker 4, Gekitou Pro Yakyuu, The Key of Avalon (1/2)…
The F-Zero AX ↔ GX bridge
F-Zero GX (GameCube) and F-Zero AX (Triforce) are twins: plugging a GameCube controller + memory card into an AX cabinet unlocks content in GX (and vice versa) — a perfect illustration of the hardware kinship.
Faults & repair¶
GameCube-class hardware → GameCube repairs apply + arcade specifics:
| Symptom | Likely cause | Lead |
|---|---|---|
| Won't boot | media/DIMM board, battery, IPL | Media-board diagnosis; image |
| GD not read | Worn GD-ROM drive | Repair/image; SD solutions |
| Reboots | PSU capacitors | Recap |
| Dead controls | JVS I/O / harness | JVS diagnosis |
Modernisation & mods¶
The common ground for every JAMMA board
Video, power, control panel and upscalers depend on the cabinet rather than the board: everything is centralised in Modernising a cabinet. To run the board outside a cabinet (at home, on a display): supergun.
- Battery 🟢: a save battery is fitted (settings/counters/RTC). A leaking battery corrodes traces — check and replace it before it leaks → save batteries.
- Optical storage 🟡: the drive is the number-one wear part. Modern routes: an ODE, netboot, or replacement by flash storage depending on the platform → PCB preservation hub.
- Scan rate 📺: derived from a home console (see the architecture above): 480i/480p output, i.e. ~15.7 kHz interlaced and ~31.5 kHz progressive. ⚠️ A 15 kHz chassis only covers the interlaced mode — plan for a tri-sync. (Derived from the platform, not measured from MAME.) → tri-sync and upscalers.
- FPGA / emulation: see the Emulation & FPGA section below.
Repair (technician)¶
- GameCube base (DOL-001): the same faults as a GameCube (recap, PSU, DOL chip).
- DIMM board: content loaded into RAM on first boot (battery → reload); media board.
- GD-ROM: drive/laser → ODE mods.
- Capacitors: recap.
→ Methods: PCB fault-finding · Recap · Backup batteries · Traces & vias
Emulation & FPGA¶
- Emulation: Dolphin (Triforce support) — the preservation route.
- FPGA / MiSTer: no core (a full GameCube, out of budget).
- → Preservation & modernisation (GD-ROM/netboot, no-battery).
Lineage¶
A console-based cousin of the Chihiro (Xbox); on the console side, see the GameCube. Contemporary with the NAOMI.
Photos / assets¶
(To add: Triforce board, media/DIMM board, GD-ROM drive, JVS I/O.)
Sources & attribution¶
- Arcade Otaku — Triforce (GameCube DOL-001 base, DIMM + GD-ROM, JVS, games) — https://wiki.arcadeotaku.com/w/Triforce
- Dolphin — Rise of the Triforce (Triforce support in the emulator) — https://dolphin-emu.org/blog/
- Internal page: GameCube
Review & corrections
How this space is used
Spotted a wrong value, an outdated procedure, a chip reference that does not match your board? Say so here, with what you observed (model, board revision, serial number, measurement). Every report is cross-checked against a source before anything changes — an unverifiable correction is published as “reported by …, not cross-checked” rather than silently applied.
Reading is open to everyone; posting requires signing in with Discord. Reports from the wiki's declared reviewers are handled first; anyone else's are read too, but go through a human before anything is changed.