Sega Model 2

From Sega Retro

Model2 cpu.jpg

Fast Facts on the Sega Model 2

Made by: Sega

Release Date RRP Code
Arcade World 1994  ?

The Sega Model 2 is an arcade system board originally released by Sega in early 1994 as a successor to the Sega Model 1 board. It is an extension of the Model 1 hardware, most notably introducing the concept of texture-mapped polygons, allowing for more "realistic" 3D graphics. The Model 2 board was an important milestone for the arcade industry, and helped launch several key arcade franchises of the 90s, including Daytona USA, Virtua Cop, Sega Rally Championship, Dead or Alive, Virtua Striker, Cyber Troopers Virtual-On and The House of the Dead.

Like the Model 1, the Model 2 was engineered with help from GE Aerospace (acquired by Martin Marietta in 1993, now part of Lockheed Martin), who designed the texture-mapping technology the Model 2 is most known for. Famed Model 2 designer Yu Suzuki has suggested on record that Martin Marietta should have made the entire board. The Model 2 arcade board debuted along with Daytona USA, a game which was actually finished (and copyrighted) in 1993.

There four versions of the system: the original Model 2 and the Model 2A-CRX, Model 2B-CRX and Model 2C-CRX variants. Model 2 and 2A-CRX used a custom DSP with internal code for the geometrizer while 2B-CRX and 2C-CRX used well documented DSPs and uploaded the geometrizer code at startup to the DSP.

List of Games


2B-CRX games




Sega Arcade Boards
Originating in Arcades
8080/Z80-based Sega Blockade hardware | Sega VIC Dual | Sega G80 | VCO Object | Sega Zaxxon hardware | Sega Laserdisc hardware | Sega System 1 | Sega Appoooh hardware | Sega System 2 | Sega System E | Sega Gigas hardware | Sega Sharp Shooter hardware | Sega Space Position hardware
Sega Shooting Zone System (MAME alias for Sega Sharp Shooter Hardware; which name is correct?)
Custom Z80 boards (TODO the only one left is Bank Panic which needs to be handled differently; it's by Sanritsu and runs on the same hardware as Combat Hawk)
68000-based Pre-System 16 hardware | Sega Hang-On hardware | Sega OutRun hardware | Sega System 16 | Sega X Board | Sega System 24 | Sega Y Board | Sega System 18
NEC V60/V70-based Sega System 32 | Sega Model 1
Intel i960-based Sega Model 2
PowerPC-based Sega Model 3
SuperH-based Sega Hikaru
Based on Home Hardware
SG-1000-based SG-1000-based Arcade Hardware
Mega Drive-based Mega-Tech | Sega System C/C2 | Mega Play | High Seas Havoc special board
Saturn-based Sega Titan Video (ST-V)
Dreamcast-based Sega NAOMI | Sega NAOMI 2 | Sega Aurora | Sammy Atomiswave
Xbox-based Sega Chihiro
GameCube-based Triforce
PC-based Sega Lindbergh | Sega Europa-R | Sega RingEdge | Sega RingWide | Sega RingEdge 2 | Nu