Difference between revisions of "Sega Model 1"

From Sega Retro
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** [[wikipedia:Fixed-point arithmetic|Fixed-point arithmetic]]: [[wikipedia:32-bit|32-bit]] [[wikipedia:Reduced instruction set computing|RISC]] [[wikipedia:Instruction set|instructions]] @ 3.5 [[wikipedia:Instructions per second|MIPS]] (million instructions per second)
 
** [[wikipedia:Fixed-point arithmetic|Fixed-point arithmetic]]: [[wikipedia:32-bit|32-bit]] [[wikipedia:Reduced instruction set computing|RISC]] [[wikipedia:Instruction set|instructions]] @ 3.5 [[wikipedia:Instructions per second|MIPS]] (million instructions per second)
 
** [[wikipedia:Floating-point unit|Floating-point unit]]: [[wikipedia:Single-precision floating-point format|32-bit]] and [[wikipedia:Double-precision floating-point format|64-bit operations]] @ 16 MFLOPS{{ref|http://www.sega-arcade.de/hardware.htm}}
 
** [[wikipedia:Floating-point unit|Floating-point unit]]: [[wikipedia:Single-precision floating-point format|32-bit]] and [[wikipedia:Double-precision floating-point format|64-bit operations]] @ 16 MFLOPS{{ref|http://www.sega-arcade.de/hardware.htm}}
−
* [[wikipedia:Video card|Graphics board]]: Sega 837-7894 171-6080D VIDEO [[wikipedia:Printed circuit board|PCB]] @ 36 MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
 
−
* [[wikia:w:c:gaming:Graphics processing unit|GPU]] [[wikipedia:Coprocessor|coprocessors]]: 5× [[Fujitsu]] TGP MB86233 / MB86933 @ 20 MHz{{ref|http://www.sega-arcade.de/hardware.htm}} ([[wikipedia:Geometry pipelines|geometrizer]], [[wikipedia:Rasterisation|rasterizer]],{{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}} [[wikipedia:Digital signal processor|DSP]], [[wikipedia:Floating point unit|FPU]])
 
−
** Coprocessor abilities: [[wikipedia:Decimal floating point|Floating decimal point]] operation function, axis rotation operation function, [[wikia:w:c:gaming:Three-dimensional|3D]] [[wikipedia:Matrix (mathematics)|matrix operation]] function
 
−
** Fixed-point arithmetic: 32-bit instructions @ 95 MIPS (19 MIPS each){{ref|http://www.sega-arcade.de/hardware.htm}}
 
−
** Floating-point unit: 32-bit operations @ 80 [[wikia:w:c:gaming:Instructions per second|MFLOPS]] (16 MFLOPS each)
 
 
* Sound CPU: Toshiba TMP68000N-10 ([[68000]]) @ 12 MHz{{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
 
* Sound CPU: Toshiba TMP68000N-10 ([[68000]]) @ 12 MHz{{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
 
* Sound chips: 2× Sega 315-5560 Custom MultiPCM
 
* Sound chips: 2× Sega 315-5560 Custom MultiPCM
 
** Audio capabilities: 28 [[Pulse-code modulation|PCM]] channels per chip (one for music, one for sound effects), 56 PCM channels total
 
** Audio capabilities: 28 [[Pulse-code modulation|PCM]] channels per chip (one for music, one for sound effects), 56 PCM channels total
 
* Sound timer: [[Yamaha]] YM3834 @ 8 MHz
 
* Sound timer: [[Yamaha]] YM3834 @ 8 MHz
−
* Memory: Up to 37.21875 [[Byte|MB]] (5984 [[Byte|KB]] main, 23.0625 MB video, 8512 KB audio)
+
}}
−
** [[RAM]]: 2776 KB (1896 KB high-speed [[SRAM]]) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
+
 
−
*** Main RAM: 480 KB (at least 156 KB SRAM)
+
===Graphics===
−
**** CPU Board: 324 KB (320 KB main, 4 KB comm)
+
{{multicol|
−
**** Comm Board: 12 KB SRAM (8 KB SRAM, 4 KB [[wikipedia:Dual-ported RAM|DP]] SRAM){{ref|http://www.datasheets360.com/part/detail/mb8421-12lp/-6698820269528857496/}}{{ref|http://www.datasheets360.com/part/detail/mb8431-90lp/-8066825331349743656/}}
+
* [[wikipedia:Video card|Graphics board]]: Sega 837-7894 171-6080D VIDEO [[wikipedia:Printed circuit board|PCB]] @ 36 MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
−
**** Other boards: 144 KB [[SRAM]] (128 KB ROM Board, 8 KB I/O Board, 8 KB Motor Board)
+
* GPU [[wikipedia:Coprocessor|coprocessors]]: 5× [[Fujitsu]] TGP MB86233 [[wikipedia:Digital signal processor|DSP]] {{ref|http://members.iinet.net.au/~lantra9jp1/gurudumps/m2status/index.html}} @ 16 MHz ([[wikipedia:Geometry pipelines|geometrizer]], [[wikipedia:Rasterisation|rasterizer]],{{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}} [[wikipedia:Floating point unit|FPU]], [[wikipedia:Arithmetic logic unit|ALU]]) {{ref|http://wiki.mamedev.org/images/f/f4/Mb86232.pdf}}
−
*** [[VRAM|Video RAM]]: 2232 KB (at least 1464 KB SRAM)
+
** Coprocessor abilities: [[wikipedia:Decimal floating point|Floating decimal point]] operation function, axis rotation operation function, 3D [[wikipedia:Matrix (mathematics)|matrix operation]] function, [[wikipedia:Direct memory access|DMA]], T&L (transform, clipping, lighting) {{ref|http://wiki.mamedev.org/index.php/TGP:Index}}
−
**** CPU Board: 768 KB (128 KB [[wikipedia:Display list|display lists]], 576 KB [[wikipedia:Tiled rendering|tiles]], 64 KB color)
+
** Fixed-point arithmetic: 32-bit instructions @ 80 MIPS (16 MIPS each)
−
**** Video Board: 1464 KB SRAM
+
** Floating-point unit: 32-bit operations @ 80 MFLOPS (16 MFLOPS each)
−
*** Audio RAM: 64 KB (16 KB SRAM)
 
−
** [[ROM]]: Up to 35,336 KB (5504 KB main, 21,384 KB video,{{ref|http://mamedb.com/game/vformula}} 8448 KB audio){{ref|http://mamedb.com/game/vf}}
 
 
* Display resolution: 496×384 pixels, 24 kHz [[wikipedia:Horizontal scan rate|H-Sync]], [[wikipedia:Progressive scan|progressive scan]] (non-interlaced) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
 
* Display resolution: 496×384 pixels, 24 kHz [[wikipedia:Horizontal scan rate|H-Sync]], [[wikipedia:Progressive scan|progressive scan]] (non-interlaced) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
−
** Overscan resolution: 656×496 pixels
+
* Overscan resolution: 656×496 pixels
−
** [[wikipedia:Refresh rate|Refresh rate]]: 49.173879 Hz
 
 
** Pixel clock rate: 16 MHz
 
** Pixel clock rate: 16 MHz
−
* [[wikipedia:Frame rate|Frame rate]]: 30 to 49.173879 frames per second
+
* [[wikipedia:Refresh rate|Refresh rate]]: 49.173879 Hz
−
* [[wikia:w:c:gaming:List of color palettes|Color palette]]: 16,777,216 ([[wikia:w:c:gaming:List of RGB palettes#16-bit RGB|16-bit]] [[wikipedia:high color|high color]] [[wikipedia:Color depth|depth]] and 256 luminance levels) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}}
+
** [[wikipedia:Frame rate|Frame rate]]: 30 to 49.173879 frames/sec
−
* Colors on screen: 190,464 (496×384)
+
* [[Palette|Color palette]]: 16,777,216 (16-bit [[wikipedia:high color|high color]] [[wikipedia:Color depth|depth]] and 256 luminance levels) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}}
 +
** Colors on screen: 190,464 (496×384)
 
* Graphical capabilities: [[wikipedia:Shading|Shading]], [http://www.giantbomb.com/flat-shading/3015-2277/ flat shading], [[wikipedia:Diffuse reflection|diffuse reflection]], [[wikipedia:Specular reflection|specular reflection]], 2 layers of background [[wikipedia:Scrolling|scrolling]], [[wikipedia:Alpha blending|alpha blending]], [[wikipedia:Alpha compositing|alpha channel]], [[wikipedia:Computer graphics lighting|lighting]] {{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}}
 
* Graphical capabilities: [[wikipedia:Shading|Shading]], [http://www.giantbomb.com/flat-shading/3015-2277/ flat shading], [[wikipedia:Diffuse reflection|diffuse reflection]], [[wikipedia:Specular reflection|specular reflection]], 2 layers of background [[wikipedia:Scrolling|scrolling]], [[wikipedia:Alpha blending|alpha blending]], [[wikipedia:Alpha compositing|alpha channel]], [[wikipedia:Computer graphics lighting|lighting]] {{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model1.cpp}}
−
* [[wikipedia:Digital geometry|Geometric]] performance: 180,000 [[wikia:w:c:gaming:Three-dimensional|polygons]]/sec (with all effects), 540,000 [[wikia:w:c:gaming:Vector graphics|vectors]]/sec
+
* [[wikipedia:Digital geometry|Geometric]] performance: 180,000 polygons/sec (with all effects), 540,000 vectors/sec
 
* [[wikipedia:Fillrate|Fillrate]]: 36 million [[pixel]]s/sec
 
* [[wikipedia:Fillrate|Fillrate]]: 36 million [[pixel]]s/sec
 +
}}
 +
 +
===Memory===
 +
{{multicol|
 +
* Memory: Up to 38,118 [[Byte|KB]] (5984 KB main, 23,622 KB video, 8512 KB audio)
 +
* System [[RAM]]: 2776 KB (1896 KB high-speed [[SRAM]]) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model1.cpp}}
 +
** Main RAM: 480 KB (at least 156 KB SRAM)
 +
*** CPU Board: 324 KB (320 KB main, 4 KB comm)
 +
*** Comm Board: 12 KB SRAM (8 KB SRAM, 4 KB [[wikipedia:Dual-ported RAM|Dual-Port]] SRAM){{ref|http://www.datasheets360.com/part/detail/mb8421-12lp/-6698820269528857496/}}{{ref|http://www.datasheets360.com/part/detail/mb8431-90lp/-8066825331349743656/}}
 +
*** Other boards: 144 KB [[SRAM]] (128 KB ROM Board, 8 KB I/O Board, 8 KB Motor Board)
 +
** [[VRAM|Video RAM]]: 2232 KB (at least 1464 KB SRAM)
 +
*** CPU Board: 768 KB (128 KB [[wikipedia:Display list|display lists]], 576 KB [[wikipedia:Tiled rendering|tiles]], 64 KB color)
 +
*** Video Board: 1464 KB SRAM
 +
** Audio RAM: 64 KB (16 KB SRAM)
 +
* Internal DSP [[wikipedia:Cache (computing)|cache]]: 6 KB (2 KB triple-port RAM) {{ref|http://wiki.mamedev.org/images/f/f4/Mb86232.pdf}}
 +
* Game [[ROM]]: Up to 35,336 KB (5504 KB main, 21,384 KB video,{{ref|http://mamedb.com/game/vformula}} 8448 KB audio){{ref|http://mamedb.com/game/vf}}
 
}}
 
}}
  

Revision as of 06:17, 21 November 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. It was Sega's first hardware designed for 3D polygon graphics.

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.

Hardware

It began development in 1990,[1] with Yu Suzuki's Sega AM2 team involved in its development from the drawing board.[2] 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.[3] The Model 1 was eventually released in 1992, debuting with Virtua Racing. 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.

Contrary to popular opinion, Lockheed Martin was not involved with the development of the Model 1, but it was developed internally at Sega, before Lockheed Martin became involved with the development of the Sega Model 2, according to former Lockheed Martin employee, Real3D's Jon Lenyo, in 1998. [1]

Technical Specifications

Graphics

Memory

  • Memory: Up to 38,118 KB (5984 KB main, 23,622 KB video, 8512 KB audio)
  • System RAM: 2776 KB (1896 KB high-speed SRAM) [4]
    • Main RAM: 480 KB (at least 156 KB SRAM)
      • CPU Board: 324 KB (320 KB main, 4 KB comm)
      • Comm Board: 12 KB SRAM (8 KB SRAM, 4 KB Dual-Port SRAM)[10][11]
      • Other boards: 144 KB SRAM (128 KB ROM Board, 8 KB I/O Board, 8 KB Motor Board)
    • Video RAM: 2232 KB (at least 1464 KB SRAM)
      • CPU Board: 768 KB (128 KB display lists, 576 KB tiles, 64 KB color)
      • Video Board: 1464 KB SRAM
    • Audio RAM: 64 KB (16 KB SRAM)
  • Internal DSP cache: 6 KB (2 KB triple-port RAM) [8]
  • Game ROM: Up to 35,336 KB (5504 KB main, 21,384 KB video,[12] 8448 KB audio)[13]

List of Sega Model 1 Games

Gallery

  • Unit

  • Amplifier PCB

  • Communication PCB

  • CPU

  • Input/Output PCB

  • Sound PCB

  • Video PCB


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