|Fast Facts on the Sega Model 2|
Made by: Sega
The Sega Model 2 is an arcade system board originally debuted by Sega in 1993 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 (for its time). 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.
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 incorporated by the Model 2. The Model 2's development was led by famed game designer Yu Suzuki. The Model 2 arcade board debuted along with Daytona USA, a game which was finished, copyrighted and debuted at the JAMMA arcade show 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. The Model 2 was succeeded by the Sega Model 3 in 1996.
It was a further advancement of the earlier Model 1 system. The most noticeable improvement was texture mapping, which enabled polygons to be painted with bitmap images, as opposed to the limited monotone flat shading that Model 1 supported. The Model 2 also introduced the use of texture filtering and texture anti-aliasing,  as well as trilinear filtering. It was the most powerful game system in its time, equivalent to the power of a PC graphics card in 1998, five years after the Model 2's release.
Designed by Sega AM2's Yu Suzuki, he stated that the Model 2's texture mapping chip originated "from military equipment from Lockheed Martin, which was formerly General Electric Aerial & Space's textural mapping technology. It cost $2 million dollars to use the chip. It was part of flight-simulation equipment that cost $32 million. I asked how much it would cost to buy just the chip and they came back with $2 million. And I had to take that chip and convert it for video game use, and make the technology available for the consumer at 5,000 yen ($50)" ($84 in 2014) per machine. He said "it was tough but we were able to make it for 5,000 yen. Nobody at Sega believed me when I said I wanted to purchase this technology for our games." Suzuki stated that, in "the end," it "was a hit and the industry gained mass-produced texture-mapping as a result." For Virtua Fighter 2, he also utilized motion capture technology, introducing it to the game industry.
There were also issues working on the new CPU,Intel i960-KB, which had just released in 1993. Suzuki stated that when working "on a brand new CPU, the debugger doesn't exist yet. The latest hardware doesn't work because it's full of bugs. And even if a debugger exists, the debugger itself is full of bugs. So, I had to debug the debugger. And of course with new hardware there's no library or system, so I had to create all of that, as well. It was a brutal cycle."the
In a late 1998 interview, Read3D's Jon Lenyo, a former employee of GE Aerospace (later Lockheed Martin), stated that Sega's development for the Model 2 can be traced back as early as November 1990, when he and other GE Aerospace employees visited Sega and demonstrated the trilinear texture filtering and shading capabilities of their technology. As Sega was already working on the Sega Model 1 internally, they eventually incorporated GE Aerospace's technology into the Model 2.
Despite its high price tag of around $15,000Daytona USA,  Virtua Fighter 2, Cyber Troopers Virtual-On, The House of the Dead, and Dead or Alive, to name a few. Sega sold 65,000 units of the Model 2 annually, and eventually sold over 130,000 units by 1996, amounting to over $1.95 billion revenue from hardware cabinet sales (130,000 units at $15,000 each ), equivalent to over $3.18 billion in 2014, making it one of the best-selling arcade systems of all time.(equivalent to $24489 in 2014), the Model 2 platform was very successful. It featured some of the highest grossing arcade games of all time:
Total RAM: 9776 KB (Model 2/2A-CRX), or 18,388 KB (Model 2B/2C-CRX)
|Sega Arcade Boards|
|Originating in Arcades|
|8080-based||Sega Blockade hardware | Sega VIC Dual|
|Z80-based||Sega VIC Dual | Sega G80 | VCO Object | Sega Zaxxon hardware | Sega LaserDisc hardware | Sega Appoooh hardware | 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)
System series: Sega System 1 | Sega System 2
|68000-based||System series: Pre-System 16 hardware | Sega System 16 | Sega System 24 | Sega System 18 | Sega System C/C2 |
Super Scaler series: Sega Hang-On hardware | Sega OutRun hardware | Sega X Board | Sega Y Board
|NEC V60/V70-based||System & Super Scaler series: Sega System 32 |
Model series: Sega Model 1
|i960-based||Sega Model 2|
|PowerPC-based||Sega Model 3|
|SuperH-based||Sega NAOMI | Sega Hikaru | Sega NAOMI 2|
|Based on Home Hardware|
|SG-1000-based||SG-1000-based Arcade Hardware|
|Master System-based||Sega System E|
|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 Aurora | Sammy Atomiswave|
|PC-based||Sega Lindbergh | Sega Europa-R | Sega RingEdge | Sega RingWide | Sega RingEdge 2 | Nu|