Sega NAOMI and variants
|Type||Arcade system board|
|Predecessor||Sega Model 3|
The NAOMI (New Arcade Operation Machine Idea) is an arcade system released by Sega in 1998. It was designed as a successor to Sega Model 3 hardware, using a similar architecture to the Sega Dreamcast.
The NAOMI was succeeded by the Sega Hikaru and Sega NAOMI 2 boards, though having out-lasted the NAOMI 2, Hikaru and Sega System SP. The Sega Chihiro, or possibly even the Sega Lindbergh, could also be seen as successors.
The NAOMI board and almost all of its variants were united in common by running on mostly the SH-4 32-bit RISC CPU. Next, all but two of these various boards shared their own form of the PowerVR 2 graphics processor with some differences in specifications (eg. either single or twin CPUs). The exception was the Cave CV1000 which ran on a Hitachi SH-3 CPU and its GPU was the Altera Cyclone EP1C12 FPGA. Many of them also utilized their own Yamaha audio chipset. Sega Hikaru had its own Sega Custom 3D GPU composed of dual PowerVR 2 GPU chips.
- 1 Models
- 2 Emulators
- 3 Games
- 4 Resources
- 5 External Links
Sega NAOMI (1998–2009)
The Sega NAOMI had a Hitachi SH-4 CPU at 200 MHz with 56MB of RAM (568MB of RAM with GD-ROM) and a NEC-VideoLogic PowerVR2 (PVR2DC/CLX2).
Sega NAOMI Multiboard (1999)
The Sega NAOMI Multiboard had 112 to 869MB of RAM. The CPU was 2× to 16× Hitachi SH-4 CPU at 200 MHz with the GPU being either 2× to 16× NEC-VideoLogic PowerVR 2 (PVR2DC/CLX2).
Sega Hikaru (1999–2002)
The Sega Hikaru had a specific Motorola 68000 CPU just for networking. The CPU was a 2× Hitachi SH-4 CPU at 200 MHz and the GPU was a 2× NEC-VideoLogic PowerVR 2 (PVR2DC/CLX2). It had 100MB of RAM.
Gaelco PowerVR Based (1999-2002)
PowerVR 2-based board from Spanish company. Not their early 'Gaelco 3D' board from 1996-1998. There is also an inactive emulator for the unrelated earlier Gaelco 3D system, and MAME supports that one.
Sega NAOMI 2 (2001–2006)
The Sega NAOMI 2 had 2 PowerVR CLX2 GPUs, a PowerVR Elan chip, and 2X the graphics memory. A prototype version of an unreleased game called Jet Squadron was made on the NAOMI 2 board in 2000 but the first officially released games started in 2001.
Sega Sammy Atomiswave (2003–2009)
The Sega Sammy Atomiswave, more commonly referred to as the Atomiswave, has a Hitachi SH-4 CPU at 200 MHz with it's GPU being a PowerVR 2. It has 16MB of VRAM and 16MB of RAM.
Sega System SP (2004–2009)
Not really the same as SI Electronics' "Aurora", commonly mislabelled as "Sega Aurora".
Cave CV1000B (2004–2007)
The Cave CV1000B had a Hitachi SH-3 at 133 MHz. Note, the 'arcade_compat.txt' file inside DEmul's release archives do not have any Cave CV1000 emulation compat list, so its games' status is unknown.
Cave CV1000D (2008–2012)
The Cave CV1000D had a new CPU which was an ISSI IS42S32400D at 166 MHz with 128MB of RAM.
- Main article: Sega Dreamcast emulators#Emulators
- DEmul is a closed-source emulator for Sega Dreamcast and arcade boards of Sega NAOMI and follow-up variants, including the NAOMI, Atomiswave, Hikaru, Gaelco, NAOMI 2, System SP (Aurora) and couple Cave CV1000 systems. Only non-MAME arcade ROMs work here.
- Flycast is a fork from the independent reicast emulator avaliable as a standalone emulator and as a libretro core; and seems to be more advanced in overall compatibility and feature levels of Dreamcast and several arcade boards emulation. It is possible that some optional hacks are used to achieve correct graphics on some compatible arcade games. Atomiswave support was initiated around November 2018. Since August 2022 Flycast is able to emulate NAOMI 2 .
- nullDC was the first independent, open-source Sega Dreamcast emulator to attempt emulation of the NAOMI arcade board. Its compatibility is unknown, so is not included in the NAOMI compatibility chart below. The emulator has since been superseded by its follow-up spin-off, 'reicast', although that one doesn't yet have any arcade board support. However, its libretro arm now supports partial emulation of NAOMI and Atomiswave boards.
- MAME is a long way behind DEmul in terms of compatibility but is being actively developed. It is shown to have adequate support of the NAOMI (Most games could show graphics & some are playable), and preliminary support for Atomiswave and Hikaru boards and at least BIOS support for NAOMI 2. v0.191 (Oct 2017) supports SuperH CPU cores and has a preliminary SH3/SH4 recompiler for CV-1000 only. NAOMI & Hikaru driver emulation was still being worked on since then up to 0.201 (Aug 2018).
Do not add any emulator columns that are not worth adding. Certain emulators that have no reports or proof of games compatibility with certain hardware mean that their compatibility may not exist at all. Also, if those same emulators are too old, not mature enough, have been superseded by emulators that either branched off or are simply better, then there is virtually no reason to use emulators with 'doubtful' compatibility status at all.
Full list of Games for the NAOMI and NAOMI GD-ROM.
|18 Wheeler: American Pro Trucker||✓||✓||✗||✓|
|Akatsuki Blitzkampf Ausf.Achse/Akatsuki Denkou Senki||✓||✓||✗||✗|
|Boat Race Ocean Heats||✓||✗||✗||✗|
|Charge 'N Blast||✓||✗||✗||✓|
|Cyber Troopers Virtual-On: Oratorio Tangram M.S.B.S. Ver. 5.66||✓||✓||✗||✓|
|Dead or Alive 2||✓||✓||✗||✓|
|Dead or Alive 2 Millennium||✓||✓||✗||✗|
|Death Crimson OX||✓||✓||✗||✓|
|Dengen Tenshi Taisen Mahjong Shangri-La||✓||~||✗||✓|
|Dynamite Baseball NAOMI||✓||~||✗||✗|
|Dynamite Baseball '99||✓||✗||✗||✗|
|Dynamite Deka EX: Asian Dynamite||✓||✓||✗||✗|
|F1 World Grand Prix||✓||✗||✗||✓|
|Formation Battle In May||✓||✗||✗||✗|
|Giant Gram: Zen Nihon Pro Wres 2 in Nihon Budoukan||✓||✓||✗||✓|
|Giant Gram 2000: Zen Nihon Pro Wres 3 Eikou no Yuushatachi||✓||✓||✗||✓|
|Guilty Gear X||✓||✓||✗||✓|
|Idol Janshi Suchie-Pai III||✓||✗||~||✗|
|Illmatic Envelope (Illvelo)||✓||✓||✗||✓|
|Inu no Osanpo||✓||✗||✗||✗|
|Kasei Channel Mars TV||✓||✓||✗||✗|
|Mamoru-kun wa Norowarete Shimatta!
|Manic Panic Ghosts||✓||✗||✗||✗|
|Melty Blood: Actress Again||✓||✓||✗||✓|
|Mushiking: The King of Beetles||✓||✗||✗||✗|
|Puyo Puyo Da! Featuring Ellena System||✓||✓||✗||✓|
|Puyo Pop Fever||✓||✓||✗||✓|
|Puzzle Kurutto Stone||✓||✗||✗||✗|
|Quiz Aa! Megami-sama/Quiz Ah My Goddess!||✓||~||✗||✓|
|Ring Out 4x4||✓||✗||✗||✗|
|Samba de Amigo||✓||✓||✗||✓|
|Samba de Amigo Ver.2000||✓||✗||✗||✓|
|Sega Marine Fishing||✓||✓||✗||✓|
|Shooting Love. 2007||✓||✓||✗||✗|
|Tokyo Bus Guide||✓||✓||✗||✓|
|Touch de Uno!||✓||✗||✗||✗|
|Touch de Uno! 2||✓||✗||✗||✗|
|Virtua Striker 2 Ver. 2000||✓||✓||✗||✗|
|Virtua Tennis/Power Smash||✓||✗||✗||✓|
|Virtua Tennis 2/Power Smash 2||✓||✓||✗||✓|
|World Series 99/Super Major League 99||✓||✓||✗||✗|
|WWF Royal Rumble (Sega)||✓||✓||✗||✓|
|Zero Gunner 2||✓||✓||✗||✓|
|Capcom vs. SNK: Millennium Fight 2000||✓||✓||✗||✓|
|Giga Wing 2||✓||✓||✗||✓|
|Heavy Metal Geomatrix||✓||✓||✗||✓|
|Kidou Senshi Gundam: Renpou vs. Zeon||✓||✓||✗||✓|
|Marvel vs. Capcom 2: New Age of Heroes||✓||✓||✗||✓|
|Power Stone 2||✓||✓||✗||✓|
|Project Justice/Moero! Justice Gakuen
(Project Justice: Rival Schools 2 in Europe)
|Spawn: In the Demon's Hand||✓||✓||✗||✓|
|Gun Survivor 2: Biohazard CODE:Veronica||✓||✓||✗||✓|
|Mazan: Flash Of The Blade||✓||✗||✗||✗|
|Shin Nihon Pro Wrestling Toukon Retsuden 4 Arcade Edition||✓||✓||✗||✓|
|The House of the Dead 2||✓||✓||✗||✓|
|The Typing of the Dead||✓||✓||✗||✓|
The NAOMI GD-ROM, released in 1999, is identical to the standard NAOMI, but uses GD-ROM discs for storage instead of ROM cartridges. It comes with a DIMM Board, which is very similar to a ROM cartridge, but with RAM instead of ROM. When a game is installed, the GD ROM content is loaded onto the DIMM Board RAM, so that the game data runs from the DIMM Board rather than the GD-ROM disc. However, the amount of up to 1GB of data on the GD ROM optical storage, compared to the more expensive ROM carts (Designed as printed circuit boards) with up to 168MB of space, came at the expense of slower loading times. Though, when the NAOMI powers-on, it copies data from the comparatively slow GD-ROM to the faster DIMM memory. Thereafter, the game executes entirely in RAM (Until either the battery goes flat, after which several days of waiting are needed before re-booting; or a different GD-ROM disc is inserted).
|Crackin' DJ Part 2||✓||~||✗||✗|
|Doki Doki Idol Star Seeker||✓||✓||~||✓|
|Dragon Treasure II||✓||✗||✗||✗|
|Dragon Treasure III||✓||✗||✗||✗|
|Get Bass 2 / Sega Bass Fishing 2||✓||✗||✗||✓|
|Guilty Gear XX #Reload||✓||✓||✗||✓|
|Guilty Gear XX: The Midnight Carnival||✓||✓||✗||✓|
|Guilty Gear XX Accent Core||✓||✓||✗||✓|
|Guilty Gear XX Slash||✓||✓||✗||✓|
|Jingi Storm: The Arcade||✓||✓||✗||✗|
|Kuru Kuru Chameleon||✓||✓||✗||✓|
|La Keyboard XYU||✓||✗||✗||✗|
|Lupin the 3rd: The Shooting||✓||✓||✗||✗|
|Lupin the 3rd: The Typing||✓||✓||✗||✗|
|Melty Blood: Act Cadenza Ver. A||✓||✗||✗||✓|
|Melty Blood: Act Cadenza Version B||✓||✗||✗||✓|
|Melty Blood: Act Cadenza Version B2||✓||~||✗||✓|
|Musapey no Choco Marker||✓||✓||✗||✓|
|Noukone Puzzle Takoron||✓||✓||✗||✓|
|Quiz Keitai Q mode||✓||✓||✗||✓|
|Senko no Ronde||✓||✗||✗||✓|
|Senko no Ronde New Version||✓||✓||✗||~|
|Senko no Ronde SP||✓||✓||✗||✓|
|Shakatto Tambourine! 2001
(Motto Norinori Shinkyoku Tsuika!!)
|Shakka to Tambourine! 2001 Power Up!||✓||✗||✗||✗|
|Shootout Pool Prize||✓||✗||✗||✗|
|Super Shanghai 2005||✓||✓||✗||✓|
|The Maze of the Kings||✓||✓||✗||✗|
|Trigger Heart Exelica||✓||✓||✗||✓|
|Virtua Athletics/Virtua Athlete||✓||✓||✗||✓|
|Virtua Golf/Dynamic Golf||✓||✓||✗||✗|
|Virtua Tennis/Power Smash (GD-ROM)||✓||✗||✗||✓|
|Virtua Tennis/Power Smash 2 (GD-ROM)||✓||✓||✗||✓|
|World Series Baseball/Super Major League
|Capcom vs. SNK: Millennium Fight 2000 Pro||✓||✓||~||✓|
|Capcom vs. SNK 2: Millionaire Fighting 2001
(Mark of the Millennium 2001)
|Kidou Senshi Gundam: Renpou vs. Zeon||✓||✓||✗||✓|
|Kidou Senshi Gundam: Renpou vs. Zeon DX||✓||✗||✗||✓|
|Street Fighter Zero 3 Upper (↑)||✓||✓||✗||✓|
|Azumanga Daioh Puzzle Bobble||✓||✓||✗||✗|
|Cleopatra Fortune Plus||✓||✓||~||✗|
|Pochi to Nyaa||✓||✗||✗||✓|
|Psyvariar 2: The Will To Fabricate||✓||✓||✗||✓|
|Shikigami no Shiro II/Castle of Shikigami II||✓||~||✗||✓|
|Usagi: Yasei no Touhai - Yamashiro Mahjong-Hen/Rabbit 2||✓||✗||~||✓|
The NAOMI Multiboard, released in 1999, stacks together multiple NAOMI system boards for parallel processing in a single arcade system, ranging from 2 to 16 system boards. Since the 16‑board variant is not known to have been used by any games, the Multiboard-capable games probably only utilized either a 2-board or 4-board configuration. A multi board system would operate in parallel, increasing the power of the system tremendously. This would let a Multiboard game achieve either better graphics performance, or have a multi-monitor setup. Theoretically, a 16 board NAOMI system could do (16 x 3.5 mpps) = 56 million polygons per second maximum! Realistically, it would most likely be around 20 to 30 mpps. Then of course, there is also the issue of the CPU being capable of driving all of this hardware.
|F355 Challenge 2: International Course Edition||✓||✗||✗||~|
|Sega Strike Fighter||✓||✓||✗||✗|
|Mazan: Flash Of The Blade
NAOMI Satellite Terminal
Sega's NAOMI Satellite Terminal Hardware infrastructure enabled developers to make games with multiple control terminals, so several people could sit and play a game that has one large screen. The Satellite Terminal Hardware links up to 10 NAOMI boards. Multi-terminal systems like this made use of Memory Card Reader and Dispenser (MCRD) technology. Derby Owners Club (2000) and World Club Champion Football (2002) are two applications of these technologies.
|Derby Owners Club||~||✗||✗||✗|
|Derby Owners Club 2||~||✗||✗||✗|
|Derby Owners Club 2 Ver.2||~||✗||✗||✗|
|Derby Owners Club 2 Ver.2.1||~||✗||✗||✗|
|Derby Owners Club 2000||~||✗||✗||✗|
|Derby Owners Club World Edition||~||✗||✗||✗|
|Sega Network Taisen Mahjong MJ||✗||✗||✗||✓|
|Star Horse 2001||~||✗||✗||✗|
|Star Horse 2002||✗||✗||✗||✗|
|Star Horse Progress||~||✗||✗||✗|
|Star Horse Progress Returns||~||✗||✗||✗|
|The Quiz Show||✗||✗||✗||✗|
These lists are updated as of MAME 0.202, DEmul's April 2018 build and Flycast's overall compatibility updated as of June 2019.
* DEmul: The arcade boards' compatibility lists for DEmul can be found inside the 'arcade_compat.txt' file inside DEmul's release archives. It covers most boards but not the Cave CV1000 boards. Also see naomi.compat.txt.
** Flycast: The arcade boards' compatibility lists for reicast's libretro core can be found on that core's GitHub repository (Official). It now supports reading/decryption of all types of proper MAME rom sets for DC-based arcade systems (NAOMI games with M1, M2, M3 & M4 keys-based encryption; NAOMI GD-ROM games & Atomiswave games). There is no emulation for NAOMI 2 and NAOMI 2 GD-ROMs as it's held back by the fact MAME lacks documentation on the special ELAN custom chip for geometry processing on that board. Ongoing support list of arcade platforms based on the SH-4 CPU. Supports loading both .gdi and CHDv5 formatted files - see a git comment for how to format a folder with GDI dump files into highly compressed CHD files. Merged ROMs, ROMs archived with 7zip as well as parent/split ROMs are now supported. It can play Demul-compatible ROMS (In .bin/.dat file formats).
*** MAME: MAME has working but incomplete NAOMI board emulation. Some games are playable. Support for several other boards (i.e. System SP/Aurora & Hikaru) are very basic. GitHub compat pages: NAOMI 1-2/Atomiswave, Hikaru. adb.arcadeitalia.net's MAME compat database for NAOMI. Progetto Emma's NAOMI compat database.
**** Ports: Many games were ported to consoles available when the arcade games where released. These games from the NAOMI board have come on Dreamcast (overwhelmingly), GameCube, PlayStation 2, Xbox, Wii, Xbox 360, Windows and macOS as well as handhelds like GBA, PSP, and NDS.
- Sega Retro
- Treasure Wiki
- Wiki's arcade system board lists.
- Wiki's list of Sega arcade system boards
- Wiki's list of Sega arcade games
- French Wiki's list of NAOMI games
- Arcade Otaku wiki
- System-16 (Games & technical specs for several NAOMI hardware)
- Arcade Museum
- 8bitplus.co.uk (Overview)
- Sega-NAOMI.com (Manuals & documentations)
- Sega-Naomi.eu (Complete NAOMI resources fan-site]
- The Dreamcast Junkyard retrospective
- romshepherd.com's thread (DEmul's arcade setup guide)
- forums.launchbox-app.com's thread (DEmul's Atomiswave setup guide)
- Getting Started with Flycast - NAOMI/Atomiswave BIOS files
- Full Set of Sega Naomi ROMs
- Sega Naomi ROMs
Gaelco PowerVR Based
- System-16 (Also shows some older, non-related Gaelco 3D games)
- UVList (Also shows non-related Gaelco 3D games)
Sega NAOMI 2
Sega System SP
- System-16 (Technical specs are likely inaccurate)
- Arcade Restoration (MAME emulation status)
- The Dreamcast Junkyard retrospective
- French Wiki (Cave 3rd gen.)