Naomi Technical Overview
Naomi and Dreamcast are almost identical
in that they both share the same CPU (Hitachi SH-4 200 MHz), same GPU (PowerVR
Series2 100 MHz), and the same 64 channel ARM7 based sound system (Yamaha
AICA 45 MHz). The main difference will be in the amount of main RAM, the
amount of graphics RAM, the amount of sound RAM, and the storage option,
with the Naomi board allowing banks of ROM chips for game storage. There
is no option for SEGA's special GD-ROM (1.2 GigaByte Disk-ROM) on the Naomi.
Click to Enlarge
||SEGA next generation arcade hardware
after Model 3 Step 2.1 is Naomi. Naomi is a Japanese female name that means
"above all beauty". It seems that the official meaning behind the Naomi
name is that it is an acronym that stands for New Arcade Operation Machine
SEGA first showed the Naomi board
at JAMMA (Japan Amusement Machinery Manufacturers Association), which took
place from September 17th to the 20th, 1998 in Japan.
Naomi will allow SEGA to continue
their domination of the arcade market, and along with the extensive list
of companies producing for Naomi, will give the Dreamcast a steady supply
of arcade hits!
CPU: SH-4 64-bit RISC CPU
(200 MHz 360 MIPS / 1.4 GFLOPS)
Graphic Engine: PowerVR (PVR2DC)
Sound Engine: Super Intelligent
Sound Processor (with internal 32-bit RISC CPU, 64 channel ADPCM)
Main Memory: 32 MByte
Graphic Memory: 16 MByte
Sound Memory: 8 MByte
Media: ROM Board (maximum
size of 168 MBytes)
Simultaneous Number of Colors:
Additional Features: Bump
Mapping, Fog, Alpha-Bending (transparency), Mip Mapping (polygon-texture
auto switch), Tri-Linear Filtering, Anti-Aliasing, Environment Mapping,
and Specular Effect.
Notice that Naomi has twice the amount
of main memory and graphics memory that Dreamcast has, so ports from Naomi
to Dreamcast may involve making some sacrifice in graphics, etc.
Also note that the Naomi board has four times the sound memory of the Dreamcast,
and the reason for this is because the Naomi board cannot spool Redbook
audio off of a GD-ROM disk.
The Naomi architecture is very flexible
in that a cabinet can have anywhere from 1 to 16 boards. A multi board
system would operate in parallel increasing the power of the system tremendously!
Theoritically 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.
SEGA has announced that 20 companies
have signed on to develop games on the Naomi board. This is an amazing
high number of companies for an arcade board, as most companies tend to
use their own proprietary hardware. It has been mentioned that Capcom might
even replace their own CPS-III 2D hardware, with Naomi. It seems that Capcom's
CPS-III hardware has not been very successful in the marketplace, as their
CPS-II 2D board has been. Here are some companies that are working on Naomi
games besides SEGA for the arcade:
The games that have been announced
23 games so far! 9 games from 3rd party
companies! The Naomi is already more successful then the SEGA ST-V arcade
board ever was.
House of the Dead 2 (SEGA), released
in Japanese arcades on Nov. 20th, 1998. Released in North American arcades
early Jan. 1999. - Shooter
Dynamite Baseball 98 (SEGA), released
in Japanese arcades Jan. 1999. - Sports
Zombie Zone ("Zombie Revenge" in North
America) (SEGA, AM1), formerly "Blood Bullet: The House of the Dead side
story". Due in Japanese arcades mid Feb. 1999. - Action Fighter
Crazy Taxi (SEGA, AM3) - Racer
SEGA Buggy (SEGA, AM4) - Racer
Virtua Striker Version 99 (SEGA) - Soccer
All Japan Pro Wrestling 2 (SEGA) - Action
Virtua Fighter 4 (SEGA, AM2) - Fighter.
Rumored to use Naomi.
Ferrari 355 Challenger (SEGA, AM2) (4
Naomi boards!) - Racer
Airline Pilots (SEGA) (3 Naomi boards,
with 3 screens) - Flight Simulation. Available March, 99.
Derby Owners Club (SEGA) - Horse Racing
Giant Gram: Zen Nihon Pro Wrestling
Kurutto Stone (SEGA) - Puzzle
Ring Out 4 X 4 (SEGA, AM1) - Racer
Boat Race 2 (SEGA) - Racer. Due summer
Dead or Alive 2 (Tecmo) - Fighter
Power Stone (Capcom) - Fighter
Justice Academy 2 ("Rival Schools 2:
United by Fate" in North America) (Capcom) - Fighter
Spawn vs Street Fighters (Capcom) -
Fighter. Rumored to use Naomi.
Gun Beat (Treasure) - Racer/Shooter
F1 World Grand Prix (Video System) -
Drift Out (Visco) - Racing
Wild Ambition (SNK) This title has not
House of the Dead 2 is the first
game released on Naomi, and it was released on November 20th, 1998 in Japan,
and will be released in 1999 everywhere else. SEGA has an initial goal
of selling 500,000 Naomi units worldwide, with House of the Dead 2 accounting
for 9000 units. SEGA has not indicated the time period that it will take
to sell the 500,000 units.
The rumored cost of the Naomi hardware
is $1995 US to arcade operators, which is quite inexpensive compared to
some Model 3 boards and cabinets going for $20,000 US!
SEGA is going to have standard cabinets
(Naomi Universal Cabinet or NUC for short) for Naomi, with single and dual
driving cabinets, and the regular standup arcade cabinets. Once an arcade
operator has purchased a cabinet with the Naomi arcade board, he can then
add the game. So when a new game comes out, the arcade operator only has
to purchase the game, and plug this into the Naomi board. This will help
keep the cost down for arcade operators, and help give games a wider release.
VideoLogic's Naomi Press
Click to Enlarge
||SEGA first showed the
Naomi board at JAMMA (Japan Amusement Machinery Manufacturers Association),
which took place from September 17th to the 20th, 1998 in Japan.
||Outside case that the
Naomi board sits in.