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 | + | 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. | + | 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. |
− | ==Specifications== | + | ==Development== |
− | * Main CPU: NEC [[V60]] @ 16 MHz | + | 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. |
− | * Graphics | + | |
− | * Sound CPU: | + | ==Technical Specifications== |
− | * Sound | + | * Main [[Central processing unit|CPU]]: [[NEC Corporation|NEC]] [[NEC V60|V60]] @ 16 MHz |
− | * Sound | + | ** [[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}} |
− | * | + | ** [[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}} |
− | * Color | + | * [[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}} |
− | * Graphical | + | * [[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]]) |
− | * Geometric performance: 180,000 polygons/sec. | + | ** 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}} |
+ | ** 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) | ||
+ | * Sound CPU: [[Motorola 68000]] @ 12 MHz{{ref|http://www.system16.com}} | ||
+ | * Sound chips: 2× Sega 315-5560 Custom MultiPCM{{ref|http://www.system16.com}} | ||
+ | ** Audio capabilities: 28 [[Pulse-code modulation|PCM]] channels per chip (one for music, one for sound effects), 56 PCM channels total | ||
+ | * Sound timer: [[Yamaha Corporation|Yamaha]] YM3834 @ 8 MHz | ||
+ | * [[Random-access memory|RAM]]: 1936 KB (1880 KB SRAM){{ref|https://github.com/mamedev/mame/tree/master/src/mame/drivers/model1.c}} | ||
+ | ** Main [[Static random-access memory|SRAM]]: 408 KB | ||
+ | ** [[Video memory]]: 1464 KB SRAM (192 KB [[display list]], 576 KB [[Tiled rendering|tiles]], 64 KB colors) | ||
+ | ** Audio memory: 64 KB (8 KB SRAM) | ||
+ | * 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) | ||
+ | * [[Frame rate]]: 60 frames per second{{ref|http://vintage3d.org/history.php#sthash.Wlg79A2P.dpbs}} | ||
+ | * [[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}} | ||
+ | * Colors on screen: 190,464 (496×384) | ||
+ | * 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}} | ||
+ | * [[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}} | ||
+ | * 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 18:15, 19 February 2015
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Sega Model 1 | |||||
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Manufacturer: Sega | |||||
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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.
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
- Main CPU: NEC V60 @ 16 MHz
- Fixed-point arithmetic: 32-bit RISC[3] instructions @ 3.5 MIPS (million instructions per second)[4][5]
- Floating-point unit: 32-bit and 64-bit operations[6]
- Graphics board: Sega 837-7894 171-6080D VIDEO PCB[7]
- GPU coprocessors: 5× Fujitsu TGP MB86233[8] (geometrizer, rasterizer,[9] DSP, FPU)
- Coprocessor abilities: Floating decimal point operation function, axis rotation operation function, 3D matrix operation function[3]
- Floating-point unit: 32-bit operations @ 16 MFLOPS (Mega-FLOPS)[3][10] each (80 MFLOPS combined)
- Sound CPU: Motorola 68000 @ 12 MHz[3]
- Sound chips: 2× Sega 315-5560 Custom MultiPCM[3]
- Audio capabilities: 28 PCM channels per chip (one for music, one for sound effects), 56 PCM channels total
- Sound timer: Yamaha YM3834 @ 8 MHz
- RAM: 1936 KB (1880 KB SRAM)[7]
- Main SRAM: 408 KB
- Video memory: 1464 KB SRAM (192 KB display list, 576 KB tiles, 64 KB colors)
- Audio memory: 64 KB (8 KB SRAM)
- Monitor display resolution: 496×384 pixels, 24 kHz horizontal sync,[7] 60 Hz refresh rate, progressive scan (non-interlaced)
- Frame rate: 60 frames per second[11]
- Color palette: 16,777,216 (16-bit high color depth[3] and 256 luminance levels)[9]
- Colors on screen: 190,464 (496×384)
- Graphical capabilities: Shading, flat shading, diffuse reflection, specular reflection, 2 layers of background scrolling, alpha blending, alpha channel,[3] lighting[9]
- Geometric performance: 180,000 polygons/sec (with all effects), 540,000 vectors/sec[3]
- Rendering fillrate: 1,200,000 pixels/sec[3]
List of Sega Model 1 Games
- Star Wars Arcade (1993)
- Virtua Racing (1992)
- Virtua Fighter (1993)
- Wing War (1994)
Gallery
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