Difference between revisions of "Sega Model 1"

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The '''Sega Model 1''' is an arcade system board released by Sega in 1992. It is the successor to the [[Sega System 32]] arcade boards, and was succeeded by the [[Sega Model 2]] series. During development, Sega went to General Electric Aerospace (now Lockheed Martin) for assistance with creating 3D hardware, however as the end result was so expensive, only a few games were developed for the platform.
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The '''Sega Model 1''' is an arcade system board released by Sega in 1992. It is the successor to the [[Sega System 32]] arcade boards, and was succeeded by the [[Sega Model 2]] series.  
  
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Originally the Model 1 was simply known as the '''CG Board''', but was retroactively given the Model 1 name after work on the Model 2 began.
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Originally, the Model 1 was simply known as the '''CG Board''', but was retroactively given the Model 1 name after work on the Model 2 began.
  
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==Specifications==
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==Development==
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* Main CPU: NEC [[V60]] @ 16 MHz
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It began development in 1990,{{ref|http://www.thg.ru/smoke/19991022/print.html}} and released in 1992. It was Sega's first hardware designed for [[3D computer graphics|polygonal 3D graphics]]. The Model 1 was intended to compete with [[Namco]]'s [[Namco System 21|System 21]]; Namco was then the market leader in polygonal 3D video games, with titles such as ''[[Galaxian 3|Galaxian³]]'' and ''[[Starblade]]''.{{ref|https://archive.org/stream/mean-machines-sega-magazine-19/MMSega_19_May_1994#page/n49/mode/2up}} While it was a significant improvement over the System 21, the Model 1 hardware was expensive, and only a few games were developed for the platform.
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* Graphics Coprocessor: Fujitsu TGP MB86233 FPU
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* Sound CPU: Motorola [[68000]] @ 10 MHz
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==Technical Specifications==
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* Sound Chip: 2 x Sega 315-5560 Custom 28 channel PCM
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* Main [[Central processing unit|CPU]]: [[NEC Corporation|NEC]] [[NEC V60|V60]] @ 16 MHz
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* Sound Timer: Yamaha [[YM3834]] @ 8 MHz
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** [[Fixed-point arithmetic]]: [[32-bit]] [[Reduced instruction set computing|RISC]]{{ref|http://www.system16.com}} [[Instruction set|instructions]] @ 3.5 [[Instructions per second|MIPS]] (million instructions per second){{ref|http://id.nii.ac.jp/1001/00059745/}}{{ref|http://archive.computerhistory.org/resources/access/text/2013/04/102723432-05-01-acc.pdf}}
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* Display [[Resolution]]: 496 x 384
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** [[Floating-point unit]]: [[Single-precision floating-point format|32-bit]] and [[Double-precision floating-point format|64-bit operations]]{{ref|http://multimedia.cx/NEC_V60pgmRef.pdf}}
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* Color Depth: 16-bit
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* [[Video card|Graphics board]]: Sega 837-7894 171-6080D VIDEO [[Printed circuit board|PCB]]{{ref|https://github.com/mamedev/mame/tree/master/src/mame/drivers/model1.c}}
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* Graphical Capabilities: Flat shading, diffuse reflection, specular reflection, 2 layers of background scrolling, alpha blending
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* [[Graphics processing unit|GPU]] [[coprocessor]]s: 5× [[Fujitsu]] TGP MB86233{{ref|http://members.iinet.net.au/~lantra9jp1/gurudumps/m2status/index.html}} ([[Geometry pipelines|geometrizer]], [[Rasterisation|rasterizer]],{{ref|http://web.archive.org/web/20130104200817/http://mamedev.org/source/src/mame/video/model1.c.html}} [[Digital signal processor|DSP]], [[Floating point unit|FPU]])
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* Geometric performance: 180,000 polygons/sec.
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** Coprocessor abilities: [[Decimal floating point|Floating decimal point]] operation function, axis rotation operation function, [[3D computer graphics|3D]] [[Matrix (mathematics)|matrix operation]] function{{ref|http://www.system16.com}}
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** Floating-point unit: 32-bit operations @ 16 MFLOPS ([[Mega-]][[FLOPS]]){{ref|http://www.system16.com}}{{ref|http://www.consoledatabase.com/faq/segasaturn/segasaturnfaq.txt}} each (80 MFLOPS combined)
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* Sound CPU: [[Motorola 68000]] @ 12 MHz{{ref|http://www.system16.com}}
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* Sound chips: 2× Sega 315-5560 Custom MultiPCM{{ref|http://www.system16.com}}
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** Audio capabilities: 28 [[Pulse-code modulation|PCM]] channels per chip (one for music, one for sound effects), 56 PCM channels total
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* Sound timer: [[Yamaha Corporation|Yamaha]] YM3834 @ 8 MHz
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* [[Random-access memory|RAM]]: 1936 KB (1880 KB SRAM){{ref|https://github.com/mamedev/mame/tree/master/src/mame/drivers/model1.c}}
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** Main [[Static random-access memory|SRAM]]: 408 KB
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** [[Video memory]]: 1464 KB SRAM (192 KB [[display list]], 576 KB [[Tiled rendering|tiles]], 64 KB colors)
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** Audio memory: 64 KB (8 KB SRAM)
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* Monitor [[display resolution]]: 496×384 pixels, 24 kHz [[Horizontal scan rate|horizontal sync]],{{ref|https://github.com/mamedev/mame/tree/master/src/mame/drivers/model1.c}} 60 Hz [[refresh rate]], [[progressive scan]] (non-interlaced)
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* [[Frame rate]]: 60 frames per second{{ref|http://vintage3d.org/history.php#sthash.Wlg79A2P.dpbs}}
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* [[List of color palettes|Color palette]]: 16,777,216 ([[List of monochrome and RGB palettes#16-bit RGB|16-bit]] [[high color]] [[color depth|depth]]{{ref|http://www.system16.com}} and 256 luminance levels){{ref|http://web.archive.org/web/20130104200817/http://mamedev.org/source/src/mame/video/model1.c.html}}
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* Colors on screen: 190,464 (496×384)
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* Graphical capabilities: [[Shading]], [[flat shading]], [[diffuse reflection]], [[specular reflection]], 2 layers of background [[scrolling]], [[alpha blending]], [[Alpha compositing|alpha channel]],{{ref|http://www.system16.com}} [[Computer graphics lighting|lighting]]{{ref|http://web.archive.org/web/20130104200817/http://mamedev.org/source/src/mame/video/model1.c.html}}
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* [[Digital geometry|Geometric]] performance: 180,000 [[Polygon (computer graphics)|polygons]]/sec (with all effects), 540,000 [[Vector graphics|vectors]]/sec{{ref|http://www.system16.com}}
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* Rendering [[fillrate]]: 1,200,000 [[pixel]]s/sec{{ref|http://www.system16.com}}
  
 
==List of Sega Model 1 Games==
 
==List of Sega Model 1 Games==

Revision as of 17:15, 19 February 2015

Model1 board.jpg
Sega Model 1
Manufacturer: Sega
Release Date RRP Code

The Sega Model 1 is an arcade system board released by Sega in 1992. It is the successor to the Sega System 32 arcade boards, and was succeeded by the Sega Model 2 series.

Originally, the Model 1 was simply known as the CG Board, but was retroactively given the Model 1 name after work on the Model 2 began.

Development

It began development in 1990,[1] and released in 1992. It was Sega's first hardware designed for polygonal 3D graphics. The Model 1 was intended to compete with Namco's System 21; Namco was then the market leader in polygonal 3D video games, with titles such as Galaxian³ and Starblade.[2] While it was a significant improvement over the System 21, the Model 1 hardware was expensive, and only a few games were developed for the platform.

Technical Specifications

List of Sega Model 1 Games

Gallery

  • Unit

  • Amplifier PCB

  • Communication PCB

  • CPU

  • Input/Output PCB

  • Sound PCB

  • Video PCB


Sega arcade boards
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