Difference between revisions of "Sega Model 3"

From Sega Retro
 
(145 intermediate revisions by 9 users not shown)
Line 9: Line 9:
 
| add-ons=
 
| add-ons=
 
| processor=
 
| processor=
−
| releases={{releases
+
| releases={{releasesArcade
−
| arcade_date_jp=[[AOU Show 1996|1996-02]]
+
| system_date_jp=[[AOU Show 1996|1996-02]]
−
| arcade_date_us=[[ACME 1996|1996-03]]
+
| system_date_us=[[ACME 1996|1996-03]]
−
| arcade_rrp_us=20,000 {{ref|http://www.segatech.com/arcade/naomi1/index.html}}
+
| system_rrp_us=20,000{{ref|https://web.archive.org/web/20010305074013/segatech.com/arcade/naomi1/index.html}}
−
| arcade_date_eu=1996 }}
+
| system_date_world=1996 }}
 
}}
 
}}
−
The '''Sega Model 3''' is an [[arcade]] platform produced by [[Sega]]. It is a successor to the [[Sega Model 2]] platform, and was released in 1996.
+
The '''Sega Model 3''' (モデル3) is an [[arcade]] platform produced by [[Sega]]. It is a successor to the [[Sega Model 2]] platform, and was released in 1996.
  
−
The Model 3 hardware is very different to the Model 1 and Model 2 boards which preceded it. The Model 3 used dual Real3D/PRO-1000 graphics processors as its GPU, designed by [[Lockheed Martin]] in partnership with [[wikipedia:Mitsubishi|Mitsubishi]]. The Model 3 was designed to push as many textured polygons as possible in real-time, along with the most advanced graphical techniques available at the time, such as multisample anti-aliasing, motion blur, facial animation, specular highlighting/reflection/shading, and multiple light sources. Upon release, the Model 3 board was more powerful than any other arcade platform on the market, as well as any home console or computer at the time; it took several years for home systems to catch-up to the Model 3.
+
The Model 3 was succeeded by the [[Sega NAOMI]] in 1998, followed by the [[Sega Hikaru]] in 1999 and [[Sega NAOMI 2]] in 2000.
  
−
The Model 3 was succeeded by the [[Sega NAOMI]] in 1998, followed by the [[Sega Hikaru]] in 1999 and [[Sega NAOMI 2]] in 2000.
+
==Hardware==
 +
The Model 3 hardware is very different to the [[Sega Model 1]] and Model 2 boards which preceded it. The Model 3 utilized Real3D Pro-1000 graphics processing units, designed by [[Lockheed Martin|Real3D]] in partnership with [[wikipedia:Mitsubishi|Mitsubishi]]. The Model 3 was designed to push as many textured polygons as possible in real-time, along with the most advanced graphical techniques available at the time, such as multisample anti-aliasing, motion blur, facial animation, specular highlighting/reflection/shading, and multiple light sources.
 +
 
 +
Upon release, the Model 3 board was more powerful than any other arcade platform on the market, as well as any home console or computer at the time; it took several years for home systems to catch-up to the Model 3.
  
−
==History==
+
==Technical specifications==
−
The Model 3 board went through a series of delays which frustrated Sega. Following their success with the Model 2's graphics chip, Lockheed Martin were unable to finalise the specifications of the Model 3's GPU, the Real3D/Pro-1000 graphics processors, until late 1995 or early 1996. Lockheed Martin partnered with Mitsubishi, which provided the GPU's ALU and graphics memory.{{ref|http://www.thefreelibrary.com/Mitsubishi's+Graphics+Memory+Products+Power+REAL+3D's+R3D%2FPRO-1000...-a018554504}} Sega had planned to release the board in late 1995 along with three games, one of which, ''[[Indy 500]]'', was reportedly downgraded to Model 2 hardware thanks to the troubles. In late 1995, Yu Suzuki promised the Model 3 would deliver "the best 3D graphics".{{fileref|SSM_UK_02.pdf|page=21}} When the Model 3 specification was finalized, it used two Real3D/Pro-1000 processors, including four 3D-RAM chips.{{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}} The Model 3 eventually debuted, with ''[[Virtua Fighter 3]]'' as its first game, at the [[AOU Show 1996]] in February 1996, and was followed by ''[[Scud Race]]'' later that year. The board was officially supported until 1999, to make room for the [[Sega NAOMI]] and its successors, the [[Sega Hikaru]] and [[NAOMI 2]].
+
===Step 1.0===
 +
Technical specifications for the Sega Model 3 Step 1.0:{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}}
  
−
The Model 3 went through a number of revisions (steps) in which improvements were made the system and board architecture was changed. These "[[wikipedia:Stepping (version numbers)|steppings]]" mainly increased the [[wikipedia:Clock speed|clock speed]] of the [[wikipedia:Central processing unit|CPU]] and the speed of the [[wikipedia:Graphics pipeline|3D engine]], as well as minor changes to the board architecture.{{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}} Step 1.0 and Step 1.5 released in 1996, Step 2.0 in 1997, and Step 2.1 in 1998. Though there was much talk of Model 3 games being ported to the [[Sega Saturn]], all home ports of Model 3 games were seen on the Sega Dreamcast, including the likes of ''[[Sega Rally 2]]'', ''[[Virtua Fighter 3tb]]'', ''[[Virtual-On Oratorio Tangram]]'' and ''[[Virtua Striker 2]]''.
+
{{multicol|
 +
* Board Composition: CPU Board + VIDEO Board + ROM Board + Network/Communication Board + Security Board{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Model3.h Model3.h (Supermodel)]}}
 +
* Main [[wikipedia:Central processing unit|CPU]]: [[wikipedia:IBM|IBM]]-[[wikipedia:Motorola|Motorola]] [[wikipedia:PowerPC|PowerPC]] [[wikipedia:PowerPC 603e|603e]] @ 66 MHz{{ref|https://web.archive.org/web/20010306005720/segatech.com/archives/january1998.html}}
 +
:* Capabilities: 64‑bit bus width, 32/64‑bit instructions/operations, 198 [[wikipedia:Instructions per second|MIPS]],{{fileref|TSPC603R datasheet.pdf}} 132 MFLOPS, direct high-speed access to main CROM (CPU ROM) on game ROM board{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Model3.cpp Model3.cpp (Supermodel)]}}{{ref|[http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg Hideki Sato Sega Interview (Edge)]}}
 +
* Network/Communication Board CPU: [[Motorola 68000]] (16/32‑bit) @ 12 MHz (2.1 MIPS)
 +
* ROM Board [[wikipedia:Generic array logic|GAL]]: Sega 315-5983 (GAL16V8B) @ 100 MHz{{fileref|GAL16V8B datasheet.pdf}}
 +
}}
  
−
It was the most powerful game system in its time, an order of magnitude more powerful than [http://www.giantbomb.com/pc/3045-94/ PC] [[wikia:w:c:gaming:Graphics processing unit|graphics cards]] from 1998, which were still producing Model 2 quality graphics, two years years after the Model 3's release.{{ref|http://www.thg.ru/smoke/19991022/print.html}} By 2000, the Sega Model 2 & 3 had sold over 200,000 arcade systems worldwide,{{ref|http://web.stanford.edu/dept/HPS/TimLenoir/MilitaryEntertainmentComplex.htm}} making them some of the [[wikia:w:c:gaming:List of best-selling video games|best-selling]] [[arcade]] game boards of all time. At around $15,000 each (for the Model 2, with the Model 3 costing higher), this amounts to at least over $3 billion revenue from cabinet sales, equivalent to over $4.9 billion in 2014.
+
====Sound====
 +
{{multicol|
 +
* Sound CPU : [[Motorola 68000]] (16/32‑bit) @ 12 MHz (2.1 MIPS)
 +
* Sound Chip: 2x [[Yamaha]] [[Saturn Custom Sound Processor|SCSP/YMF292-F]]
 +
:* DSP: 2x "LAKE" FH1 128-step DSP @ 22.6 MHz{{fileref|ST-103-R1-040194.pdf}}
 +
:* Bus width: 2x 24‑bit internal, 2x 16‑bit external{{fileref|Sega Service Manual - Sega Saturn (PAL) - 013-1 - June 1995.pdf}}
 +
:* [[Pulse-code modulation|PCM]] audio: 64 voices/channels, 16‑bit [[wikipedia:Audio bit depth|depth]], [[wikipedia:44,100 Hz|44.1 kHz]] [[wikipedia:Sampling rate|sampling rate]] ([[Compact disc|CD]] [[wikipedia:Sound quality|quality]])
 +
:* Other features: [[wikipedia:MIDI|MIDI]] interface, 32 MIDI channels, 32 [[wikipedia:Frequency modulation synthesis|FM synthesis]] channels, 32 [[wikipedia:Low-frequency oscillation|LFO]] channels, [[wikipedia:Quadraphonic sound|4-channel]] [[wikipedia:Surround sound|surround sound]], 16.5 MB SROM (Sound [[ROM]])
 +
* Optional Sound Board: MPEG Sound Board
 +
:* Sound CPU: [[Motorola 68000]] or [[Zilog Z80]]
 +
:* Sound chip: [[NEC]] uD65654GF102
 +
:* Features: MPEG audio compression, stereo output, steam individual mono channels to left and right speakers
 +
}}
  
−
From the early 1970s, arcades had been at the forefront of graphical technology in video games. The Model 3 hardware as well as competitors from this era were also leading the industry from a graphical perspective at the time, compared to PCs which were still producing Model 2 quality graphics in 1998,{{ref|http://www.thg.ru/smoke/19991022/print.html}} but the gap began to slowly narrow after that, as PCs would begin to benefit from hardware accelerated graphics towards the end of the decade. Beginning with the co-development of the [[Sega Dreamcast]] console and [[Sega NAOMI]] arcade system, both released in 1998, consoles and later PCs would slowly become the basis for arcade systems, rather than the reverse as it had been up until this point. The last proprietary Sega arcade systems would be the [[Sega Hikaru]] and [[Sega NAOMI 2]], after which PCs would overtake arcade systems as the forefront of graphical technology. Today, arcade games are built primarily around controls and the experience one gets from a game as opposed to graphical potential. Complex motion cabinets, and large, unique forms of control unsuitable for households is what drives the arcade industry in the present day.
+
====Graphics====
 +
Graphical specifications of the Sega Model 3:{{fileref|Model3 cpu1.jpg}}{{fileref|Real3DPro1000ProductDescription.pdf}}{{intref|Press release: 1996-08-06: Mitsubishi's Graphics Memory Products Power REAL 3D's R3D/PRO-1000 Graphics Engine}}{{fileref|Real3D100ArchitectureOverview.pdf}}
  
−
==Technical Specifications==
 
 
{{multicol|
 
{{multicol|
−
* Board Composition: CPU + VIDEO + ROM boards
+
* Video Board: [[Sega]] 837-11859 MODEL3
−
* Main [[wikipedia:Central processing unit|CPU]]: [[wikipedia:IBM|IBM]]-[[wikipedia:Motorola|Motorola]] [[wikipedia:PowerPC|PowerPC]] [[wikipedia:PowerPC 603e|603e]] ([[wikipedia:32-bit|32-bit]] & [[wikipedia:64-bit|64-bit]] instructions)
+
* [[wikia:w:c:gaming:Graphics processing unit|GPU]]: 2x Sega 315-5830-A ([[Lockheed Martin|Real3D]] Pro‑1000) @ 50 MHz
−
** Step 1.0: 66 MHz (93.4 [[wikipedia:Instructions per second|MIPS]], 132 [[wikia:w:c:gaming:Instructions per second|MFLOPS]])
+
:* 20 core processors: 2x Geometry Engine ASIC, 4x Mitsubishi 3D‑RAM ALU, 4x Pixel Processors,{{fileref|Real3D100ArchitectureOverview.pdf|page=12}}{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}} 4x Texture Processors, 2 [[wikipedia:Direct memory access|DMA]] devices,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Real3D.cpp Real3D.cpp (Supermodel)]}} 2 tile generators,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/TileGen.cpp TileGen (Supermodel)]}} 2 Fragment Processors
−
** Step 1.5: 100 MHz (142 MIPS, 200 MFLOPS)
+
:* 36 core units: 2x Geometry Engine ASIC, 24 Mitsubishi 3D‑RAM ALU units, 4x Pixel Processors, 4x Texture Processors, 2 DMA devices, 2 tile generators, 2 Fragment Processors
−
** Step 2.0: PowerPC 603R @ 166 MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}} (498 MIPS,{{fileref|TSPC603R datasheet.pdf}} 332 MFLOPS)
+
* GPU Geometrizers: 2x Geometry Engine [[wikipedia:ASIC|ASIC]] (50 MHz, 2x 32‑bit floating-point units)
−
* Other Specifications: 10 Mb/s connection, calendar IC
+
:* Geometrizer features: [[wikia:w:c:gaming:Transform, clipping, and lighting|T&L (transform, clipping, lighting)]], [[wikipedia:Hidden surface determination|culling]], 24‑bit hidden surface removal, [[wikipedia:Clipping (computer graphics)|clipping]], 24‑bit floating-point Z-buffering, depth buffer, stencil buffer, particle effects{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp Model 3 (Video)]}}
 +
:* [[wikipedia:Computer graphics lighting|Lighting]]: Parallel light, pin-point light, 4 light spots, 4 [[wikipedia:Shading#Spotlight lighting|spot lights]], pin spot light, [[wikipedia:Specular reflection|specular reflection]], [[wikipedia:Specular highlight|specular highlighting]], headlight illumination, landing lights, glare effects, sunlight
 +
:* Geometry performance: 8 million lit vertices/sec{{ref|Over 2 million lit quads/sec (over 1 million polygons/sec per Geometrizer){{fileref|Real3DPro1000ProductDescription.pdf|page=8}}{{fileref|Real3DPro1000ProductDescription.pdf|page=16}}|group=n}}
 +
:* Floating-point performance: 900 [[wikipedia:MFLOPS|MFLOPS]] (520 million [[wikipedia:Multiply–accumulate operation|MAC operations]]/sec){{ref|908 MFLOPS (524 million MAC operations per second), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp Model 3 (Video)]}}|group=n}}
 +
* GPU [[wikipedia:Arithmetic logic unit|ALU]]: 4x [[wikipedia:Mitsubishi|Mitsubishi]] 3D‑RAM{{ref|33 MHz, 2 ALU per GPU){{fileref|M5M410092B datasheet.pdf}}{{fileref|M5M410092FP datasheet.pdf}}|group=n}}{{ref|[http://ieeexplore.ieee.org/iel1/4/10262/00482207.pdf A 10 Mb frame buffer memory with Z-compare and A-blend units]}}
 +
:* 24 core units: 16x 8‑bit [[wikipedia:Render output unit|ROP]]/blend units,{{ref|33 MHz, 4 units per ALU|group=n}} 8x 32‑bit [[wikipedia:Z-buffering|Z‑compare]] units{{ref|33 MHz, 2 units per ALU|group=n}}
 +
:* Functional blocks per ALU: 32‑bit Pixel ALU,{{ref|33 MHz|group=n}} 256‑bit Global Bus,{{ref|16 MHz|group=n}} 256/32‑bit triple-port [[SRAM]] [[wikipedia:Pixel buffer|Pixel Buffer]] cache,{{ref|16/33 MHz|group=n}} 1280‑bit{{ref|2x 640‑bit|group=n}} [[wikipedia:Sequential access memory|SAM]] Video Buffers,{{ref|27 MHz|group=n}} 128‑bit{{ref|16x 32‑bit|group=n}} dual-port DRAM banks{{ref|16 MHz|group=n}}
 +
:* Features: Blending, depth check, stencil & raster operations,{{ref|https://web.archive.org/web/20140329074554/www.vgamuseum.info/index.php/glossary/Glossary-1/3/3D-RAM-20/}} [[wikipedia:Alpha blending|alpha blending]], [[wikipedia:Tiled rendering|tiled rendering]], 16/24/32‑bit [http://www.edge-online.com/features/brief-history-3d/3/ Z-buffering], [[wikipedia:Hidden surface determination|hidden surface removal]], 30-85 Hz refresh rate, OpenGL support
 +
:* [[wikipedia:Framebuffer|Framebuffers]]: 320×200 to [[wikipedia:SXGA|1280×1024]],{{ref|16/24/32‑bit|group=n}} [[wikipedia:Z-buffering|Z-buffer]]{{ref|16/24/32‑bit|group=n}}
 +
:* Bus width: 1024‑bit{{ref|4x 256‑bit|group=n}} internal, 128‑bit{{ref|4x 32‑bit|group=n}} external
 +
:* Performance: 528 million operations/sec, 7 million vectors/sec, 4 million tiles/sec{{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}
 +
* GPU Renderers: 4x [[wikipedia:Pixel shader|Pixel Processors]] (50 MHz)
 +
:* [[wikipedia:Spatial anti-aliasing|Anti-aliasing]]: [[wikipedia:Texture filtering|Texture anti-aliasing]], [[wikipedia:Multisample anti-aliasing|multi-layered anti-aliasing]] (multi-sample anti-aliasing), texture & edge multi-layered anti-aliasing, S-buffer anti-aliasing technology
 +
:* [[wikipedia:Shading|Shading]]: [http://www.giantbomb.com/flat-shading/3015-2277/ Flat shading], [http://www.giantbomb.com/gouraud-shading/3015-4864/ Gouraud shading], high-specular Gouraud shading, micro texture shading, [[wikipedia:Fixed-function|fix shading]], flat sun shading
 +
* GPU [[wikipedia:Texture mapping unit|Texture Mapping Units]]: 4x Texture Processors (50 MHz){{ref|[https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp Model 3 (Video)]}}
 +
:* Capabilities: Full color [[wikipedia:Texture mapping|texture mapping]], [[wikipedia:Mipmap|mipmapping]], [[wikipedia:Texture mapping#Perspective correctness|perspective correction]], [[wikipedia:Texture filtering|texture filtering]], [[wikipedia:Trilinear filtering|Trilinear filtering]], [[wikipedia:Trilinear interpolation|trilinear interpolation]], trilinear mipmapping, mipmapped trilinear interpolation texture mapping algorithms, [https://web.archive.org/web/20130126073536/www.edge-online.com/features/brief-history-3d/3 reflection/environment mapping], 4‑bit to 24‑bit color per texture
 +
:* Texture sizes: 32×32 to 1024×1024 (mipmapped), 32×32 to 2048×2048 (non-mipmapped)
 +
:* Texture RAM: 8 MB,{{ref|16x 512 KB|group=n}} Mitsubishi CDRAM,{{ref|Cached DRAM, 33 MHz{{fileref|M5M4V4169TP datasheet.pdf}}|group=n}} dual 2048×1024 texture sheets (4.2 million [[texel]]s per frame)
 +
* Display [[Resolution]]: 496×384 to [[wikipedia:480p|640x480]], [[wikipedia:Progressive scan|progressive scan]] (non-[[wikipedia:Interlaced video|interlaced]]), 24 kHz [[wikipedia:Horizontal scan rate|horizontal sync]], one or two planes
 +
:* [[wikipedia:Refresh rate|Refresh rate]]: 60 Hz,{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}} 60 [[wikipedia:Frame rate|frames per second]]
 +
* [[Palette|Color Depth]]: 32‑bit [[wikipedia:RGBA color space|ARGB]], 24‑bit RGB (16,777,216 colors) and [[wikipedia:Alpha compositing|alpha opacity]]
 +
* Scroll Window: Two planes (24 kHz, two plane mode), 16 colors/32,768 1024 palette x 2 bank, 256/32,768 64 palette x 2 bank
 +
* Special effects: [[wikipedia:Distance fog|Zoning fog]], 32 levels of [[wikipedia:Transparency and translucency|translucency]], 64 levels of model/texture [[wikipedia:Level of detail|LOD]], fade in/out, 4095 moving [[wikipedia:3D modeling|models]], [http://www.giantbomb.com/motion-blur/3015-248/ motion blur]
 +
* Floating-Point Performance: 1 [[wikipedia:GFLOPS|GFLOPS]] (590 million MAC operations/sec){{ref|132 MFLOPS CPU (66 MAC operations per second),{{ref|1=[http://www.mit.edu/afs/sipb/contrib/doc/specs/ic/cpu/powerpc/mpc603e.pdf#page=35 PowerPC 603e: RISC Microprocessor User's Manual (page 35)]}} 908 MFLOPS GPU (524 million MAC operations per second)|group=n}}
 +
:* Geometry performance: 8.7 million lit vertices/sec{{ref|PowerPC 603e: 790,419 lit vectors/sec (334 cycles per lit quad) (262 MAC operations, 4 divides) (1 cycle per MAC,{{ref|1=[http://www.mit.edu/afs/sipb/contrib/doc/specs/ic/cpu/powerpc/mpc603e.pdf#page=35 PowerPC 603e: RISC Microprocessor User's Manual (page 35)]}} 18 cycles per divide){{ref|1=[http://www.mit.edu/afs/sipb/contrib/doc/specs/ic/cpu/powerpc/mpc603e.pdf#page=252 PowerPC 603e: RISC Microprocessor User's Manual (page 252)]}} <br> Real3D Pro-1000: 8 million lit vertices/sec|group=n}}
 +
* Rendering [[Fillrate]]:
 +
:* Framebuffer: 528&nbsp;[[Pixel|MPixels/s]] (write), 2.112&nbsp;[[Pixel|GPixels/s]] (erase){{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}
 +
:* Raw polygons: 300&nbsp;MPixels/s (3&nbsp;million triangles/sec), 200&nbsp;MPixels/s (4&nbsp;million triangles/sec){{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}
 +
:* Textured polygons: 200&nbsp;MPixels/s,{{fileref|Real3DPro1000ProductDescription.pdf|page=9}} with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering{{fileref|Real3DPro1000ProductDescription.pdf}}
 +
* Texture Fillrate: 200&nbsp;[[Texel|MTexels/s]], 16&nbsp;million colored textures/sec{{fileref|Real3DPro1000ProductDescription.pdf}}
 +
* Rendering Performance:
 +
:* Raw polygons: 4 million triangles/sec, 7 million vectors/sec{{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}
 +
:* Textured polygons: 2 million polygons/sec (100-pixel polygons), with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering{{fileref|Real3DPro1000ProductDescription.pdf}}
 +
* VROM Access: GPU has direct access to VROM (Video ROM) on game ROM board,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Real3D.h Real3D.h (Supermodel)]}} with fast [[wikipedia:Mask ROM|Mask ROM]] access speed allowing it to stream polygon/texture data directly from VROM{{ref|[http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg Hideki Sato Sega Interview (Edge)]}}
 +
* Hardware support: Motion capture{{fileref|GameOn US 06.pdf|page=7}}
 
}}
 
}}
  
−
===Sound===
+
====Memory====
 
{{multicol|
 
{{multicol|
−
* Sound CPU : [[Motorola 68000]] (16/32-bit) @ 12&nbsp;MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}} (2.1 MIPS)
+
* Memory: Up to 251.23&nbsp;[[Byte|MB]] (144&nbsp;MB main, 89.157226&nbsp;MB video, 17.570312&nbsp;MB sound, 512&nbsp;[[Byte|KB]] other){{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Model3.cpp Model3.cpp (Supermodel)]}}
−
* Sound Chip: 2× [[Yamaha]] [[Saturn Custom Sound Processor|SCSP/YMF292-F]]
+
* [[RAM]]: 35,561&nbsp;KB (34.727539&nbsp;MB)
−
**DSP: 2× "LAKE" FH1 128-step DSP
+
:* Main RAM: 8&nbsp;MB (3&nbsp;MB [[wikipedia:SGRAM|SGRAM]]){{fileref|KM4132G271A datasheet.pdf}}
−
** [[Pulse-code modulation|PCM]] audio: 64 voices/channels, 16-bit [[wikipedia:Audio bit depth|depth]], [[wikipedia:44,100 Hz|44.1&nbsp;kHz]] [[wikipedia:Sampling rate|sampling rate]] ([[Compact disc|CD]] [[wikipedia:Sound quality|quality]])
+
:* [[VRAM]]: 25,761&nbsp;KB (5121&nbsp;KB framebuffers, 9248&nbsp;KB textures, 1&nbsp;MB [[wikipedia:Display list|display list]], 4&nbsp;MB polygons, 5&nbsp;MB culling,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Real3D.h Real3D.h (Supermodel)]}} 1152&nbsp;KB tile generator){{ref|[https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp Model 3 (Video)]}}
−
** Other features: [[wikipedia:MIDI|MIDI]] interface, 32 MIDI channels, 32 [[wikipedia:Frequency modulation synthesis|FM synthesis]] channels, 32 [[wikipedia:Low-frequency oscillation|LFO]] channels, [[wikipedia:Quadraphonic sound|4-channel]] [[wikipedia:Surround sound|surround sound]], 16.5&nbsp;MB audio [[wikia:w:c:gaming:Read-only memory|ROM]]
+
::* [[wikipedia:Framebuffer|Framebuffer]] RAM: 5121&nbsp;KB [[wikipedia:Mitsubishi|Mitsubishi]] 3D-RAM (5&nbsp;MB DRAM, 1&nbsp;KB [[pixel]] buffer SRAM [[wikipedia:Cache (computing)|cache]]){{fileref|M5M410092FP datasheet.pdf}}
−
* Optional sound board: MPEG Sound Board
+
::* [[wikipedia:Texture memory|Texture RAM]]: 9248&nbsp;KB (8&nbsp;MB Mitsubishi CDRAM, 32&nbsp;KB [[SRAM]] cache,{{fileref|M5M4V4169TP datasheet.pdf}} 1&nbsp;MB [[wikipedia:FIFO (computing and electronics)|FIFO]])
−
** Sound CPU: [[Motorola 68000]] or [[Zilog Z80]]
+
::* [[wikipedia:SDRAM|SDRAM]]: 4&nbsp;MB{{fileref|HM5241605 datasheet.pdf}}
−
** Sound chip: [[NEC]] uD65654GF102
+
:* Sound RAM: 1096&nbsp;KB (64&nbsp;KB main, 1032&nbsp;KB SCSP [[wikipedia:DRAM|DRAM]]; 512&nbsp;KB per SCSP chip){{fileref|HM514270 datasheet.pdf}}
−
** Features: MPEG audio compression, stereo output, steam individual mono channels to left and right speakers
+
:* Other RAM: 512&nbsp;KB (192&nbsp;KB security,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Model3.h Model3.h (Supermodel)]}} 192&nbsp;KB network/communication [[SRAM]],{{fileref|N341256 datasheet.pdf}} 128&nbsp;KB backup SRAM/[[wikipedia:Non-volatile random-access memory|NVRAM]]){{fileref|LH52B256 datasheet.pdf}}
 +
* [[ROM]]: Up to 216.5&nbsp;MB{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Model3.h Model3.h (Supermodel)]}}
 +
:* CROM: 136&nbsp;MB (CPU ROM)
 +
:* VROM: 64&nbsp;MB (Video ROM)
 +
:* SROM: 16.5&nbsp;MB (Sound ROM)
 
}}
 
}}
  
−
===Graphics===
+
====Bandwidth====
 
{{multicol|
 
{{multicol|
−
* Video Board: {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}}
+
* Memory Bandwidth: 4.9&nbsp;GB/s{{ref|3.8815&nbsp;GB/s RAM, 1.018&nbsp;GB/s ROM|group=n}}
−
** Step 1.0: Sega 837-11859 MODEL3
+
:* Video memory: 3.612&nbsp;GB/s{{ref|3.212&nbsp;GB/s VRAM, 400&nbsp;MB/s VROM|group=n}}
−
** Step 1.5: Sega 837-12875 MODEL3 STEP 1.5
+
* RAM Bandwidth: 3.8815&nbsp;GB/s
−
** Step 2.0: Sega 837-12716 MODEL3 STEP2
+
:* Main RAM: 528&nbsp;MB/s{{ref|64‑bit, 66&nbsp;MHz{{fileref|KM4132G271A datasheet.pdf}}|group=n}}
−
** Step 2.1: Sega 837-13368 MODEL3 STEP2.1
+
:* VRAM: 3.212&nbsp;GB/s
−
* [[wikia:w:c:gaming:Display resolution|Display Resolution]]: 496×384 to [[wikipedia:480p|640x480]], [[wikipedia:Progressive scan|progressive scan]] (non-[[wikipedia:Interlaced video|interlaced]]), 24&nbsp;kHz [[wikipedia:Horizontal scan rate|horizontal sync]], one or two planes
+
::* Framebuffers: 2.2&nbsp;GB/s{{ref|1.1&nbsp;GB/s per GPU,{{fileref|Real3D100ArchitectureOverview.pdf}} 546&nbsp;MB/s per 3D-RAM{{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}|group=n}}
−
** [[wikipedia:Refresh rate|Refresh rate]]: [https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp 60&nbsp;Hz], 60 [[wikipedia:Frame rate|frames per second]]
+
::* Textures: 2.112&nbsp;GB/s{{ref|8x 264&nbsp;MB/s{{fileref|DRAM Technology.pdf}}|group=n}}
−
* [[Palette|Color Depth]]: 32-bit [[wikipedia:RGBA color space|ARGB]],{{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}} [[wikia:w:c:gaming:List of RGB palettes#24-bit RGB|24-bit]] [[wikia:w:c:gaming:List of RGB palettes|RGB]] [[wikipedia:True Color|true color]] (16,777,216 colors) and [[wikipedia:Alpha compositing|alpha opacity]]
+
:* Sound RAM: 88.888889&nbsp;MB/s{{ref|2x 16‑bit, 22.222222&nbsp;MHz{{fileref|HM514270 datasheet.pdf}}|group=n}}
−
* Scroll Window: Two planes (24&nbsp;kHz, two plane mode), 16 colors/32,768 1024 palette x 2 bank, 256/32,768 64 palette x 2 bank
+
:* Other RAM: 52.571429&nbsp;MB/s
 +
::* Backup NVRAM: 28.571428&nbsp;MB/s{{ref|16‑bit, 14.285714&nbsp;MHz{{fileref|LH52B256 datasheet.pdf}}|group=n}}
 +
::* Network/Communication Board: 24&nbsp;MB/s{{ref|16‑bit, 12&nbsp;MHz{{fileref|N341256 datasheet.pdf}}|group=n}}
 +
* ROM Bandwidth: 1.018&nbsp;GB/s
 +
:* CROM: 528&nbsp;MB/s{{ref|64‑bit, 66&nbsp;MHz{{fileref|GAL16V8B datasheet.pdf}}|group=n}}
 +
:* VROM: 400&nbsp;MB/s{{ref|2x 32‑bit,{{ref|[https://github.com/mirror/model3emu/blob/master/Src/Model3/Real3D.h Real3D.h (Supermodel)]}} 50&nbsp;MHz{{fileref|MC88915 datasheet.pdf}}|group=n}}
 +
:* SROM: 90.4&nbsp;MB/s{{ref|2x 16‑bit, 22.6&nbsp;MHz|group=n}}
 +
:* Note: High-speed access allows ROM to effectively be used as RAM, and polygon/texture data streamed directly from VROM to the GPU.{{ref|[http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg Hideki Sato Sega Interview (Edge)]}}
 
}}
 
}}
  
−
====Step 1.0====
+
===Step 1.5===
 +
The Sega Model 3 Step 1.5, released in late 1996, had a higher CPU clock rate and faster 3D engine:{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}}
 +
 
 +
* Main CPU: IBM-Motorola PowerPC 603e @ 100&nbsp;MHz (300&nbsp;MIPS, 200&nbsp;MFLOPS)
 +
* ROM Board GAL: Sega 315-6090A (GAL16V8B) @ 100&nbsp;MHz{{fileref|GAL16V8B datasheet.pdf}}
 +
 
 +
====Graphics====
 
{{multicol|
 
{{multicol|
−
* [[wikia:w:c:gaming:Graphics processing unit|GPU]]: 2× [[Lockheed Martin]] [[wikipedia:Real3D|Real3D/Pro‑1000]] @ 50&nbsp;MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}}{{fileref|Real3DPro1000ProductDescription.pdf}}{{ref|http://www.thefreelibrary.com/Mitsubishi's+Graphics+Memory+Products+Power+REAL+3D's+R3D%2FPRO-1000...-a018554504}}{{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp}}
+
* Video Board: Sega 837-12875 MODEL3 STEP 1.5
−
** [[wikipedia:Arithmetic logic unit|ALU]]: 4× [[wikipedia:Mitsubishi|Mitsubishi]] 3D‑RAM @ 33&nbsp;MHz {{fileref|M5M410092B datasheet.pdf}}{{fileref|M5M410092FP datasheet.pdf}}{{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}{{ref|http://ieeexplore.ieee.org/iel1/4/10262/00482207.pdf}}
+
* GPU: 2x Sega 315-5830-B (Real3D Pro‑1000) @ 66&nbsp;MHz
−
*** Functional blocks: 4× 32-bit Pixel ALU (33&nbsp;MHz), 4× 256-bit Global Bus (16&nbsp;MHz), 4× 256/32-bit triple-port [[SRAM]] [[wikipedia:Pixel buffer|Pixel Buffer]] cache (16/33&nbsp;MHz), 4× 1280-bit (8× 640-bit) [[wikipedia:Sequential access memory|SAM]] Video Buffers (27&nbsp;MHz), 4× 128-bit (16× 32-bit) dual-port SDRAM banks (16&nbsp;MHz)
+
* GPU Geometrizers: 2x Geometry Engine ASIC (66&nbsp;MHz, 2x 32‑bit floating-point units)
−
*** [[wikipedia:Render output unit|Render output units]]: 16 (4× 4) ROP/blend units (8-bit), 8 (4× 2) Z-compare units (32-bit)
+
:* Geometry performance: 10 million lit vertices/sec{{ref|10.56 million lit vertices/sec|group=n}}
−
*** Features: Blending, depth check, stencil & raster operations,{{ref|https://web.archive.org/web/20140329074554/www.vgamuseum.info/index.php/glossary/Glossary-1/3/3D-RAM-20/}} [[wikipedia:Alpha blending|alpha blending]], [[wikipedia:Tiled rendering|tiled rendering]], 32-bit [[wikipedia:Z-buffering|Z‑compare]], 16/24/32-bit [http://www.edge-online.com/features/brief-history-3d/3/ Z-buffering], [[wikipedia:Hidden surface determination|hidden surface removal]], 30-85 Hz refresh rate, OpenGL support
+
:* Floating-point performance: 1.1 GFLOPS (690 million MAC operations/sec){{ref|1198 MFLOPS (691 million MAC operations/sec)|group=n}}
−
*** [[wikipedia:Framebuffer|Framebuffers]]: 512×486 to [[wikipedia:SXGA|1280×1024]] (16/24/32-bit), Z-buffer (16/24/32-bit)
+
* GPU ALU: 4x Mitsubishi 3D‑RAM (33&nbsp;MHz)
−
*** Framebuffer bandwidth: 2.062&nbsp;GB/sec (4×&nbsp;528&nbsp;MB/sec)
+
:* Performance: 528&nbsp;million operations/sec, 4&nbsp;million tiles/sec
−
*** Framebuffer fillrate: 2.112&nbsp;billion pixels/sec (erase), 528&nbsp;million pixels/sec (write), 264&nbsp;million pixels/sec (read)
+
* GPU Renderers: 4x Pixel Processors (66&nbsp;MHz)
−
*** ALU performance: 528&nbsp;million operations/sec, 7&nbsp;million vectors/sec, 4&nbsp;million triangle polygons/sec, 4&nbsp;million tiles/sec
+
* GPU Texture Mapping Units: 4x Texture Processors (66&nbsp;MHz)
−
*** ALU polygon fillrate: 300&nbsp;million pixels/sec (write)
+
* Floating-Point Performance: 1.3 GFLOPS (790 million MAC operations/sec){{ref|200 MFLOPS CPU (100 MAC operations per second),{{ref|1=[http://www.mit.edu/afs/sipb/contrib/doc/specs/ic/cpu/powerpc/mpc603e.pdf#page=35 PowerPC 603e: RISC Microprocessor User's Manual (page 35)]}} 1198 MFLOPS GPU (691 million MAC operations per second)|group=n}}
−
** Geometrizers: 2 custom ASIC geometry processors, 2 floating-point units (32-bit)
+
:* Geometry performance: 11 million lit vertices/sec{{ref|PowerPC 603e: 1,197,604 lit vectors/sec (334 cycles per lit quad) <br> Real3D Pro-1000: 10.56 million lit vertices/sec|group=n}}
−
*** Geometrizer features: [[wikia:w:c:gaming:Transform, clipping, and lighting|T&amp;L (transform, clipping, lighting)]], [[wikipedia:Hidden surface determination|culling]], 24-bit hidden surface removal, [[wikipedia:Clipping (computer graphics)|clipping]], 24-bit floating-point Z-buffering, depth buffer, stencil buffer, particle effects
+
* Rendering Fillrate:
−
*** [[wikipedia:Computer graphics lighting|Lighting]]: Parallel light, pin-point light, 4 light spots, 4 [[wikipedia:Shading#Spotlight lighting|spot lights]], pin spot light, [[wikipedia:Specular reflection|specular reflection]], [[wikipedia:Specular highlight|specular highlighting]], headlight illumination, landing lights, glare effects, sunlight
+
:* Framebuffer: 528&nbsp;MPixels/s (write), 2.1&nbsp;GPixels/s (erase)
−
*** Geometrizer performance: 2,000,200 textured triangle polygons/sec (1,000,100 textured quad polygons/sec) with effects (shading, translucency, anti-aliasing, fog, lighting, Z-buffering)
+
:* Raw polygons: 300&nbsp;MPixels/s (3&nbsp;million triangles/sec), 200&nbsp;MPixels/s (4&nbsp;million triangles/sec)
−
** Renderers: 2 [[wikipedia:Pixel shader|pixel processors]]
+
:* Textured polygons: 260&nbsp;MPixels/s, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
−
*** [[wikipedia:Spatial anti-aliasing|Anti-aliasing]]: [[wikipedia:Texture filtering|Texture anti-aliasing]], [[wikipedia:Multisample anti-aliasing|multi-layered anti-aliasing]] (multi-sample anti-aliasing), texture & edge multi-layered anti-aliasing, S-buffer anti-aliasing technology
+
* Texture Fillrate: 260&nbsp;MTexels/s
−
*** Renderer polygon fillrate: 100&nbsp;million pixels/sec (write)
+
* Rendering Performance:
−
** [[wikipedia:Texture mapping|Texture mapping]]: Full color texture mapping, [[wikipedia:Mipmap|mipmapping]], [[wikipedia:Texture mapping#Perspective correctness|perspective correction]], [[wikipedia:Texture filtering|texture filtering]], [[wikipedia:Trilinear filtering|Trilinear filtering]], [[wikipedia:Trilinear interpolation|trilinear interpolation]], trilinear mipmapping, mipmapped trilinear interpolation texture mapping algorithms, [https://web.archive.org/web/20130126073536/www.edge-online.com/features/brief-history-3d/3 reflection/environment mapping], 32×32 to 1024×1024 texture sizes
+
:* Raw polygons: 4&nbsp;million triangles/sec, 7&nbsp;million vectors/sec
−
*** Texture RAM: 8&nbsp;MB (16×&nbsp;512&nbsp;KB) Mitsubishi Cached SDRAM (33&nbsp;MHz), 2× 64-bit (8× 16-bit),{{fileref|M5M4V4169TP datasheet.pdf}} 2.062&nbsp;GB/sec (8×&nbsp;264&nbsp;MB/sec) texture RAM bandwidth,{{ref|http://smithsonianchips.si.edu/ice/cd/MEMORY97/SEC07.PDF}} dual 2048×1024 texture sheets (4.2&nbsp;million texels per frame)
+
:* Textured polygons: 2.6&nbsp;million polygons/sec, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
−
*** Texture fillrate: 357&nbsp;million [[wikipedia:Texel (graphics)|texels]]/sec (color), 1.426&nbsp;billion texels/sec (grayscale), 16&nbsp;million colored textures/sec
 
−
** [[wikipedia:Shading|Shading]]: [http://www.giantbomb.com/flat-shading/3015-2277/ Flat shading], [http://www.giantbomb.com/gouraud-shading/3015-4864/ Gouraud shading], high-specular Gouraud shading, micro texture shading, [[wikipedia:Fixed-function|fix shading]], flat sun shading
 
−
** [[wikipedia:Special effects|Special effects]]: [[wikipedia:Distance fog|Zoning fog]], 32 levels of [[wikipedia:Transparency and translucency|translucency]], model & texture [[wikipedia:Level of detail|LOD]], fade in/out, 4095 moving [[wikipedia:3D modeling|models]], [http://www.giantbomb.com/motion-blur/3015-248/ motion blur]
 
 
}}
 
}}
  
−
====Step 1.5====
+
====Bandwidth====
 
{{multicol|
 
{{multicol|
−
* GPU: 2× Lockheed Martin Real3D/Pro‑1000 @ 66&nbsp;MHz {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}}
+
* Memory Bandwidth: 6.6&nbsp;GB/s{{ref|5.1813&nbsp;GB/s RAM, 1.4184&nbsp;GB/s ROM|group=n}}
−
** ALU: 4× Mitsubishi 3D‑RAM @ 33&nbsp;MHz
+
:* Video memory: 4.8&nbsp;GB/s{{ref|4.23984&nbsp;GB/s VRAM, 528&nbsp;MB/s VROM|group=n}}
−
*** Framebuffer fillrate: 2.112&nbsp;billion pixels/sec (erase), 528&nbsp;million pixels/sec (write), 264&nbsp;million pixels/sec (read)
+
* RAM Bandwidth: 5.1813&nbsp;GB/s
−
*** ALU performance: 528&nbsp;million operations/sec, 7&nbsp;million vectors/sec, 4&nbsp;million triangle polygons/sec, 4&nbsp;million tiles/sec
+
:* Main RAM: 800&nbsp;MB/s{{ref|64‑bit, 100&nbsp;MHz{{fileref|KM4132G271A datasheet.pdf}}|group=n}}
−
*** ALU polygon fillrate: 300&nbsp;million pixels/sec (write)
+
:* VRAM: 4.23984&nbsp;GB/s
−
*** Functions/Features/Framebuffers: Same as Step 1.0
+
:* Sound RAM: 88.888889&nbsp;MB/s
−
** Geometrizers: 2 custom ASIC geometry processors, 2 floating-point units (32-bit)
+
:* Other RAM: 52.571429&nbsp;MB/s
−
*** Geometrizer performance: 2.666&nbsp;million textured triangle polygons/sec (1.333&nbsp;million textured quad polygons/sec) with effects (shading, translucency, anti-aliasing, fog, lighting, Z-buffering)
+
* ROM Bandwidth: 1.4184&nbsp;GB/s
−
*** Features/Lighting: Same as Step 1.0
+
:* CROM: 800&nbsp;MB/s{{ref|64‑bit, 100&nbsp;MHz{{fileref|GAL16V8B datasheet.pdf}}|group=n}}
−
** Renderers: 2 pixel processors
+
:* VROM: 528&nbsp;MB/s{{ref|2x 32‑bit, 66&nbsp;MHz{{fileref|MC88915 datasheet.pdf}}|group=n}}
−
*** Renderer polygon fillrate: 133&nbsp;million pixels/sec (write)
+
:* SROM: 90.4&nbsp;MB/s{{ref|2x 16‑bit, 22.6&nbsp;MHz|group=n}}
−
*** Anti-aliasing: Same as Step 1.0
 
 
}}
 
}}
  
−
===Memory===
+
===Step 2.0===
 +
The Sega Model 3 Step 2.0, released in 1997, was a substantial upgrade, with a higher CPU clock rate, significantly faster 3D engine (with an increased number of graphics chips), and more memory:{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}}
 +
 
 +
* CPU: IBM-Motorola PowerPC 603ev @ 166&nbsp;MHz (498&nbsp;MIPS,{{fileref|TSPC603R datasheet.pdf}} [https://web.archive.org/web/20010306005720/segatech.com/archives/january1998.html 332&nbsp;MFLOPS])
 +
 
 +
====Graphics====
 
{{multicol|
 
{{multicol|
−
* Memory: Up to 285.16504&nbsp;[[Byte|MB]] (128&nbsp;MB main, 123.15723&nbsp;MB video, 33.69533&nbsp;MB audio, 320&nbsp;[[Byte|KB]] other)
+
* Video Board: Sega 837-12716 MODEL3 STEP2
−
** [[wikipedia:Random-access memory|RAM]]: 32.54004&nbsp;MB (33,321&nbsp;KB) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp}}
+
* GPU: 6x Sega 315-6060 (Real3D Pro‑1000) @ 50&nbsp;MHz{{fileref|Real3DPro1000ProductDescription.pdf}}{{fileref|Real3D100ArchitectureOverview.pdf}}
−
*** Main RAM: 8&nbsp;MB (8192&nbsp;KB) @ 66&nbsp;MHz
+
:* 59 core processors: 2x Geometry Engine ASIC, 15x Mitsubishi 3D‑RAM ALU, 12x Pixel Processors,{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}}{{fileref|Real3D100ArchitectureOverview.pdf|page=12}} 12x Texture Processors, 6 DMA devices, 6 tile generators, 6 Fragment Processors
−
*** [[VRAM]]: 23,713&nbsp;KB (5&nbsp;MB framebuffer, 8&nbsp;MB textures, 33&nbsp;KB SRAM cache, 1&nbsp;MB [[wikipedia:Display list|display list]], 4&nbsp;MB culling, 4&nbsp;MB polygons, 1152&nbsp;KB [[wikipedia:Tiled rendering|tilemap]] generator VRAM) {{ref|https://github.com/mamedev/mame/blob/master/src/mame/video/model3.cpp}}
+
:* 122 core units: 2x Geometry Engine ASIC, 90 Mitsubishi 3D‑RAM ALU units, 12x Pixel Processors, 12x Texture Processors, 2&nbsp;DMA devices, 2&nbsp;tile generators, 2&nbsp;Fragment Processors
−
**** [[wikipedia:Framebuffer|Framebuffer]]: 5&nbsp;MB (4× 1.25&nbsp;MB) [[wikipedia:Mitsubishi|Mitsubishi]] 3D-RAM (5&nbsp;MB framebuffer Video SDRAM, 1&nbsp;KB pixel buffer SRAM [[wikipedia:Cache (computing)|cache]]) {{fileref|M5M410092FP datasheet.pdf/}}
+
* GPU Geometrizers: 6x Geometry Engine ASIC (50&nbsp;MHz, 6x 32‑bit floating-point units)
−
**** [[wikia:w:c:gaming:Texture memory|Texture RAM]]: 8&nbsp;MB (16× 512&nbsp;KB) Mitsubishi Cached SDRAM (8&nbsp;MB SDRAM, 32&nbsp;KB [[SRAM]] cache) {{fileref|M5M4V4169TP datasheet.pdf}}
+
:* Lighting: 12&nbsp;light spots, 12&nbsp;spot lights
−
**** 4&nbsp;MB (8× 512&nbsp;KB) [[wikipedia:Hitachi|Hitachi]] [[wikipedia:Synchronous dynamic random-access memory|SDRAM]] {{fileref|HM5241605 datasheet.pdf}}
+
:* Geometry performance: 24 million lit vertices/sec{{ref|Over 6 million lit quads/sec (over 1 million polygons/sec per Geometrizer){{fileref|Real3DPro1000ProductDescription.pdf|page=8}}{{fileref|Real3DPro1000ProductDescription.pdf|page=16}}|group=n}}
−
*** Audio RAM: 1096&nbsp;KB (64&nbsp;KB main, 1032&nbsp;KB SCSP; 512&nbsp;KB per SCSP chip)
+
:* Floating-point performance: 2.7 GFLOPS (1.5 billion MAC operations/sec){{ref|2724 MFLOPS (1.572 billion MAC operations/sec), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides|group=n}}
−
*** Other RAM: 320&nbsp;KB (192&nbsp;KB security, 128&nbsp;KB backup [[wikipedia:Static random-access memory|static]] [[wikipedia:Non-volatile random-access memory|NVRAM]])
+
* GPU ALU: 15x Mitsubishi 3D‑RAM (33&nbsp;MHz, 2-3 ALU per GPU){{fileref|M5M410092B datasheet.pdf}}
−
** [[ROM]]: Up to 252.625&nbsp;MB (120&nbsp;MB main,{{ref|http://mamedb.com/game/spikeofe}} 100&nbsp;MB video/texture/graphics [[wikipedia:Mask ROM|Mask ROM]],{{ref|http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg}} 32.625&nbsp;MB audio ROM) {{ref|http://mamedb.com/game/spikeofe}}
+
:* 90 core units: 60x 8‑bit ROP/blend units,{{ref|33&nbsp;MHz|group=n}} 30x 32‑bit Z‑compare units{{ref|33&nbsp;MHz|group=n}}
−
*** ROM access time: 100 [[wikipedia:Nanosecond|nanoseconds]]{{ref|http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg}}
+
:* Bus width: 3840‑bit{{ref|15x 256‑bit|group=n}} internal, 960‑bit{{ref|15x 32‑bit|group=n}} external
−
*** High-speed access allows ROM to effectively be used as RAM, and textures streamed directly from ROM.{{ref|http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg}}
+
:* Performance: 1.98&nbsp;billion operations/sec, 15&nbsp;million tiles/sec{{ref|https://web.archive.org/web/19980122143920/www.mitsubishichips.com/products/asmemory/3dram/3dramind.htm}}
 +
* GPU Renderers: 12x Pixel Processors (50&nbsp;MHz)
 +
* GPU Texture Mapping Units: 12x Texture Processors (50&nbsp;MHz)
 +
:* Texture RAM: 21&nbsp;MB{{ref|42x 512&nbsp;KB|group=n}} on-board Mitsubishi CDRAM{{ref|33&nbsp;MHz|group=n}}
 +
* Floating-Point Performance: 3 GFLOPS (1.7 billion MAC operations/sec){{ref|332 MFLOPS CPU (166 MAC operations per second),{{ref|1=[http://www.mit.edu/afs/sipb/contrib/doc/specs/ic/cpu/powerpc/mpc603e.pdf#page=35 PowerPC 603e: RISC Microprocessor User's Manual (page 35)]}} 2724 MFLOPS GPU (1.572 billion MAC operations per second)|group=n}}
 +
:* Geometry performance: 25 million lit vertices/sec{{ref|PowerPC 603e: 1,988,023 lit vectors/sec (334 cycles per lit quad) <br> Real3D Pro-1000: 24 million lit vertices/sec|group=n}}
 +
* Rendering Fillrate:
 +
:* Framebuffer: 1.9&nbsp;GPixels/s (write), 7.9&nbsp;GPixels/s (erase)
 +
:* Raw polygons: 1.125&nbsp;GPixels/s (11.25&nbsp;million triangles/sec), 750&nbsp;MPixels/s (15&nbsp;million triangles/sec)
 +
:* Textured polygons: 600&nbsp;MPixels/s, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
 +
* Texture Fillrate: 600&nbsp;MTexels/s
 +
* Rendering Performance:
 +
:* Raw polygons: 15 million triangles/sec, 26.25 million vectors/sec
 +
:* Textured polygons: 6 million polygons/sec (100-pixel polygons), with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
 
}}
 
}}
  
−
==Hardware Images==
+
====Memory====
−
<gallery>
+
{{multicol|
−
File:Model3_cpu1.jpg|Main Board
+
* Memory: Up to 317&nbsp;[[Byte|MB]] (136&nbsp;MB main, 146.835693&nbsp;MB video, 33.695312&nbsp;MB sound, 320&nbsp;KB other)
−
File:Model3_cpu2.jpg|Main Board 2
+
* RAM: 57,567.75&nbsp;KB (56.218505&nbsp;MB)
−
File:Model3_sound.jpg|Sound board
+
:* Main RAM: 8&nbsp;MB SDRAM{{fileref|TC59S1616AFT datasheet.pdf}}
−
File:Model3_fullboard.jpg|Complete Board
+
:* [[VRAM]]: 47,959.75&nbsp;KB (46.835693&nbsp;MB)
−
</gallery>
+
::* Framebuffer RAM: 19,203.75&nbsp;KB (18.75&nbsp;MB Mitsubishi 3D-RAM, 3.75&nbsp;KB pixel buffer [[SRAM]] cache){{fileref|M5M410092FP datasheet.pdf}}
 +
::* Texture RAM: 21,588&nbsp;KB (21&nbsp;MB Mitsubishi CDRAM, 84&nbsp;KB SRAM cache,{{fileref|M5M4V4169TP datasheet.pdf}} 1&nbsp;MB FIFO)
 +
::* [[wikipedia:SGRAM|SGRAM]]: 7&nbsp;MB{{fileref|UPD4811650 datasheet.pdf}}{{fileref|KM4132G271A datasheet.pdf}}
 +
::* Sound RAM: 1096&nbsp;KB (1&nbsp;MB DRAM)
 +
::* Other RAM: 320&nbsp;KB
 +
* [[ROM]]: Up to 260.625&nbsp;MB (128&nbsp;MB CROM, 100&nbsp;MB VROM,{{ref|[http://farm6.staticflickr.com/5471/12172411045_18bfc5912f_c.jpg Hideki Sato Sega Interview (Edge)]}} 32.625&nbsp;MB SROM){{ref|[http://mamedb.blu-ferret.co.uk/game/spikeofe Spikeout Final Edition (MAME)]}}
 +
}}
 +
 
 +
====Bandwidth====
 +
{{multicol|
 +
* Memory Bandwidth: 13.4&nbsp;GB/s{{ref|11.998127&nbsp;GB/s RAM, 1.4&nbsp;GB/s ROM|group=n}}
 +
:* Video memory: 11.8&nbsp;GB/s{{ref|11.19&nbsp;GB/s VRAM, 560&nbsp;MB/s VROM|group=n}}
 +
* RAM Bandwidth: 11.998127&nbsp;GB/s
 +
:* Main RAM: 666.666666&nbsp;MB/s{{ref|64‑bit, 83.333333&nbsp;MHz{{fileref|TC59S1616AFT datasheet.pdf}}|group=n}}
 +
:* VRAM: 11.19&nbsp;GB/s
 +
::* Framebuffers: 8.19&nbsp;GB/s{{ref|546&nbsp;MB/s per 3D-RAM|group=n}}
 +
::* Textures: 3&nbsp;GB/s{{ref|12x 264&nbsp;MB/s{{fileref|DRAM Technology.pdf}}|group=n}}
 +
:* Sound RAM: 88.888889&nbsp;MB/s{{ref|2x 16‑bit, 22.222222&nbsp;MHz{{fileref|HM514270 datasheet.pdf}}|group=n}}
 +
:* Other RAM: 52.571429&nbsp;MB/s
 +
::* Backup NVRAM: 28.571428&nbsp;MB/s{{ref|16‑bit, 14.285714&nbsp;MHz{{fileref|LH52B256 datasheet.pdf}}|group=n}}
 +
::* Network/Communication Board: 24&nbsp;MB/s{{ref|16‑bit, 12&nbsp;MHz{{fileref|N341256 datasheet.pdf}}|group=n}}
 +
* ROM Bandwidth: 1.4&nbsp;GB/s
 +
:* CROM: 800&nbsp;MB/s{{ref|64‑bit, 100&nbsp;MHz{{fileref|GAL16V8B datasheet.pdf}}|group=n}}
 +
:* VROM: 560&nbsp;MB/s{{ref|2x 32‑bit, 70&nbsp;MHz{{fileref|MC88915 datasheet.pdf}}|group=n}}
 +
:* SROM: 90.4&nbsp;MB/s{{ref|2x 16‑bit, 22.6&nbsp;MHz|group=n}}
 +
}}
 +
 
 +
===Step 2.1===
 +
The Sega Model 3 Step 2.1, released in 1998, is largely identical to Step 2.0, but with the following updates:{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}}
 +
 
 +
{{multicol|
 +
* Video Board: Sega 837-13368 MODEL3 STEP2.1
 +
* ROM Board: Sega 837-13022-02
 +
* ROM Board GAL: Sega 315-6090B (GAL16V8B) @ 100&nbsp;MHz{{fileref|GAL16V8B datasheet.pdf}}
 +
}}
  
−
==List of Games==
+
==List of games==
 
===[[:Category:Model 3 Step 1.0 games|Step 1.0]]===
 
===[[:Category:Model 3 Step 1.0 games|Step 1.0]]===
 +
{{multicol|
 
* ''[[Boat Race GP]]'' (1996)
 
* ''[[Boat Race GP]]'' (1996)
 
* ''[[Virtua Fighter 3]]'' (1996)
 
* ''[[Virtua Fighter 3]]'' (1996)
 
* ''[[Virtua Fighter 3tb]]'' (1997)
 
* ''[[Virtua Fighter 3tb]]'' (1997)
−
* ''[[Sega Bass Fishing|Sega Bass Fishing/Get Bass]]'' (1998)
+
* ''[[Sega Bass Fishing|Sega Bass Fishing/Get Bass]]'' (1997)
 +
}}
  
 
===[[:Category:Model 3 Step 1.5 games|Step 1.5]]===
 
===[[:Category:Model 3 Step 1.5 games|Step 1.5]]===
Line 169: Line 292:
 
* ''[[Dirt Devils]]'' (1998)
 
* ''[[Dirt Devils]]'' (1998)
 
* ''[[L.A. Machineguns]]'' (1998)
 
* ''[[L.A. Machineguns]]'' (1998)
−
* ''[[Spike Out]]'' (1998)
 
 
* ''[[Star Wars Trilogy Arcade]]'' (1998)
 
* ''[[Star Wars Trilogy Arcade]]'' (1998)
 
* ''[[The Ocean Hunter]]'' (1998)
 
* ''[[The Ocean Hunter]]'' (1998)
 +
* ''[[Spike Out]]'' (1998)
 +
* ''[[Spikeout: Final Edition]]'' (1999)
 
* ''[[Emergency Call Ambulance]]'' (1999)
 
* ''[[Emergency Call Ambulance]]'' (1999)
 
* ''[[Magical Truck Adventure]]'' (1999)
 
* ''[[Magical Truck Adventure]]'' (1999)
−
* ''[[Spikeout: Final Edition]]'' (1999)
+
* ''[[Virtua Striker 2 Version '99]]'' (1999)
−
* ''[[Virtua Striker 2 '99]]'' (1999)
+
}}
 +
 
 +
==History==
 +
The Model 3 board went through a series of delays which frustrated Sega. Following their success with the Model 2's texture-mapping chip, Real3D (a spin-off company from [[Lockheed Martin]]) were unable to finalise the specifications of the Model 3's GPU, the Real3D Pro-1000 graphics processors, until late 1995 or early 1996. By this time, Real3D had partnered with Mitsubishi, which provided the ALU and graphics memory for the Pro-1000.{{intref|Press release: 1996-08-06: Mitsubishi's Graphics Memory Products Power REAL 3D's R3D/PRO-1000 Graphics Engine}} Sega had planned to release the Model 3 board in late 1995 along with three games, one of which, ''[[Indy 500]]'', was reportedly downgraded to Model 2 hardware thanks to the troubles.{{magref|nextgeneration|11|16}}{{magref|edge|25|8}} In late 1995, Yu Suzuki promised the Model 3 would deliver "the best 3D graphics".{{fileref|SSM_UK_02.pdf|page=21}} When the Model 3 specification was finalized, it used two Real3D Pro-1000 processors, including four Mitsubishi 3D-RAM ALU chips.{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}} The Model 3 eventually debuted, with ''[[Virtua Fighter 3]]'' as its first game, at the [[AOU Show 1996]] in February 1996, and was followed by ''[[Scud Race]]'' later that year. The board was officially supported until 1999, to make room for the [[Sega NAOMI]] and its successors, the [[Sega Hikaru]] and [[NAOMI 2]].
 +
 
 +
The Model 3 went through a number of revisions (steps) in which improvements were made the system and board architecture was changed. These "[[wikipedia:Stepping (version numbers)|steppings]]" mainly increased the [[wikipedia:Clock speed|clock speed]] of the [[wikipedia:Central processing unit|CPU]] and the speed of the [[wikipedia:Graphics pipeline|3D engine]], as well as minor changes to the board architecture.{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/model3.cpp Sega Model 3 (MAME)]}} Step 1.0 and Step 1.5 released in 1996, Step 2.0 in 1997, and Step 2.1 in 1998. Though there was much talk of Model 3 games being ported to the [[Sega Saturn]], all home ports of Model 3 games were seen on the Sega Dreamcast, including the likes of ''[[Sega Rally 2]]'', ''[[Virtua Fighter 3tb]]'', ''[[Virtual-On Oratorio Tangram]]'' and ''[[Virtua Striker 2]]''.
 +
 
 +
It was the most powerful game system in its time, an order of magnitude more powerful than [http://www.giantbomb.com/pc/3045-94/ PC] [[wikia:w:c:gaming:Graphics processing unit|graphics cards]] from 1998, which were still producing Model 2 quality graphics, two years years after the Model 3's release.{{ref|[http://www.thg.ru/smoke/19991022/print.html Second Hand Smoke - One up, two down]}} By 2000, the Sega Model 2 & 3 had sold over 200,000 *arcade systems worldwide,{{ref|[http://web.stanford.edu/dept/HPS/TimLenoir/MilitaryEntertainmentComplex.htm ALL BUT WAR IS SIMULATION: THE MILITARY-ENTERTAINMENT COMPLEX]}} making them some of the [[wikia:w:c:gaming:List of best-selling video games|best-selling]] [[arcade]] game boards of all time. At around $15,000 each (for the Model 2, with the Model 3 costing higher), this amounts to at least over $3 billion revenue from cabinet sales, equivalent to over $5 billion as of 2017.
 +
 
 +
From the early 1970s, arcades had been at the forefront of graphical technology in video games. The Model 3 hardware as well as competitors from this era were also leading the industry from a graphical perspective at the time, compared to PCs which were still producing Model 2 quality graphics in 1998,{{ref|[http://www.thg.ru/smoke/19991022/print.html Second Hand Smoke - One up, two down]}} but the gap began to slowly narrow after that, as PCs would begin to benefit from hardware accelerated graphics towards the end of the decade. Beginning with the co-development of the [[Sega Dreamcast]] console and [[Sega NAOMI]] arcade system, both released in 1998, consoles and later PCs would slowly become the basis for arcade systems, rather than the reverse as it had been up until this point. The last proprietary Sega arcade systems would be the [[Sega Hikaru]] and [[Sega NAOMI 2]], after which PCs would overtake arcade systems as the forefront of graphical technology. Today, arcade games are built primarily around controls and the experience one gets from a game as opposed to graphical potential. Complex motion cabinets, and large, unique forms of control unsuitable for households is what drives the arcade industry in the present day.
 +
 
 +
==Production credits==
 +
{{creditstable|
 +
*[[Hiroshi Yagi]]
 +
*[[Toshiyuki Kaji]]
 +
| source=Developer mentions{{ref|https://web.archive.org/web/20210205150032/https://www.4gamer.net/games/999/G999905/20210126043/}}{{ref|https://web.archive.org/web/20231110103013/https://game.watch.impress.co.jp/docs/news/758667.html}}
 +
| console=Arcade
 +
}}
 +
 
 +
==Magazine articles==
 +
{{mainArticle|{{PAGENAME}}/Magazine articles}}
 +
 
 +
==Photo gallery==
 +
<gallery>
 +
Model3 cpu1.jpg|Main board
 +
Model3 cpu2.jpg|Main board 2
 +
Model3 sound.jpg|Sound board
 +
Model3 fullboard.jpg|Complete board
 +
SegaModel3Step2.jpg|Official [[Sega of Japan]] photograph of the Model 3 Step 2.0
 +
</gallery>
 +
 
 +
==Notes==
 +
{{multicol|
 +
<references group="n" />
 
}}
 
}}
 +
 +
==References==
 +
<references/>
  
 
{{Sega Arcade Boards}}
 
{{Sega Arcade Boards}}
 
[[Category:Sega Model series]]
 
[[Category:Sega Model series]]

Latest revision as of 06:47, 10 November 2023

Model3 fullboard.jpg
Sega Model 3
Manufacturer: Sega
Release Date RRP Code
Arcade
JP		 ¥? ?
Arcade
US		 $20,000[1] ?
Arcade
World		 ? ?





































The Sega Model 3 (モデル3) is an arcade platform produced by Sega. It is a successor to the Sega Model 2 platform, and was released in 1996.

The Model 3 was succeeded by the Sega NAOMI in 1998, followed by the Sega Hikaru in 1999 and Sega NAOMI 2 in 2000.

Hardware

The Model 3 hardware is very different to the Sega Model 1 and Model 2 boards which preceded it. The Model 3 utilized Real3D Pro-1000 graphics processing units, designed by Real3D in partnership with Mitsubishi. The Model 3 was designed to push as many textured polygons as possible in real-time, along with the most advanced graphical techniques available at the time, such as multisample anti-aliasing, motion blur, facial animation, specular highlighting/reflection/shading, and multiple light sources.

Upon release, the Model 3 board was more powerful than any other arcade platform on the market, as well as any home console or computer at the time; it took several years for home systems to catch-up to the Model 3.

Technical specifications

Step 1.0

Technical specifications for the Sega Model 3 Step 1.0:[2]

  • Capabilities: 64‑bit bus width, 32/64‑bit instructions/operations, 198 MIPS,[5] 132 MFLOPS, direct high-speed access to main CROM (CPU ROM) on game ROM board[6][7]
  • Network/Communication Board CPU: Motorola 68000 (16/32‑bit) @ 12 MHz (2.1 MIPS)
  • ROM Board GAL: Sega 315-5983 (GAL16V8B) @ 100 MHz[8]

Sound

  • Optional Sound Board: MPEG Sound Board
  • Sound CPU: Motorola 68000 or Zilog Z80
  • Sound chip: NEC uD65654GF102
  • Features: MPEG audio compression, stereo output, steam individual mono channels to left and right speakers

Graphics

Graphical specifications of the Sega Model 3:[11][12][13][14]

  • Video Board: Sega 837-11859 MODEL3
  • GPU: 2x Sega 315-5830-A (Real3D Pro‑1000) @ 50 MHz
  • 20 core processors: 2x Geometry Engine ASIC, 4x Mitsubishi 3D‑RAM ALU, 4x Pixel Processors,[15][2] 4x Texture Processors, 2 DMA devices,[16] 2 tile generators,[17] 2 Fragment Processors
  • 36 core units: 2x Geometry Engine ASIC, 24 Mitsubishi 3D‑RAM ALU units, 4x Pixel Processors, 4x Texture Processors, 2 DMA devices, 2 tile generators, 2 Fragment Processors
  • GPU Geometrizers: 2x Geometry Engine ASIC (50 MHz, 2x 32‑bit floating-point units)
  • Color Depth: 32‑bit ARGB, 24‑bit RGB (16,777,216 colors) and alpha opacity
  • Scroll Window: Two planes (24 kHz, two plane mode), 16 colors/32,768 1024 palette x 2 bank, 256/32,768 64 palette x 2 bank
  • Special effects: Zoning fog, 32 levels of translucency, 64 levels of model/texture LOD, fade in/out, 4095 moving models, motion blur
  • Floating-Point Performance: 1 GFLOPS (590 million MAC operations/sec)[n 17]
  • Geometry performance: 8.7 million lit vertices/sec[n 18]
  • Framebuffer: 528 MPixels/s (write), 2.112 GPixels/s (erase)[25]
  • Raw polygons: 300 MPixels/s (3 million triangles/sec), 200 MPixels/s (4 million triangles/sec)[25]
  • Textured polygons: 200 MPixels/s,[29] with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering[12]
  • Texture Fillrate: 200 MTexels/s, 16 million colored textures/sec[12]
  • Rendering Performance:
  • Raw polygons: 4 million triangles/sec, 7 million vectors/sec[25]
  • Textured polygons: 2 million polygons/sec (100-pixel polygons), with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering[12]
  • VROM Access: GPU has direct access to VROM (Video ROM) on game ROM board,[30] with fast Mask ROM access speed allowing it to stream polygon/texture data directly from VROM[7]
  • Hardware support: Motion capture[31]

Memory

  • Memory: Up to 251.23 MB (144 MB main, 89.157226 MB video, 17.570312 MB sound, 512 KB other)[6]
  • RAM: 35,561 KB (34.727539 MB)
  • Main RAM: 8 MB (3 MB SGRAM)[32]
  • VRAM: 25,761 KB (5121 KB framebuffers, 9248 KB textures, 1 MB display list, 4 MB polygons, 5 MB culling,[30] 1152 KB tile generator)[18]
  • Sound RAM: 1096 KB (64 KB main, 1032 KB SCSP DRAM; 512 KB per SCSP chip)[34]
  • Other RAM: 512 KB (192 KB security,[3] 192 KB network/communication SRAM,[35] 128 KB backup SRAM/NVRAM)[36]
  • CROM: 136 MB (CPU ROM)
  • VROM: 64 MB (Video ROM)
  • SROM: 16.5 MB (Sound ROM)

Bandwidth

  • Memory Bandwidth: 4.9 GB/s[n 19]
  • Video memory: 3.612 GB/s[n 20]
  • RAM Bandwidth: 3.8815 GB/s
  • Main RAM: 528 MB/s[n 21]
  • VRAM: 3.212 GB/s
  • Sound RAM: 88.888889 MB/s[n 24]
  • Other RAM: 52.571429 MB/s
  • Backup NVRAM: 28.571428 MB/s[n 25]
  • Network/Communication Board: 24 MB/s[n 26]
  • ROM Bandwidth: 1.018 GB/s
  • CROM: 528 MB/s[n 27]
  • VROM: 400 MB/s[n 28]
  • SROM: 90.4 MB/s[n 29]
  • Note: High-speed access allows ROM to effectively be used as RAM, and polygon/texture data streamed directly from VROM to the GPU.[7]

Step 1.5

The Sega Model 3 Step 1.5, released in late 1996, had a higher CPU clock rate and faster 3D engine:[2]

  • Main CPU: IBM-Motorola PowerPC 603e @ 100 MHz (300 MIPS, 200 MFLOPS)
  • ROM Board GAL: Sega 315-6090A (GAL16V8B) @ 100 MHz[8]

Graphics

  • Video Board: Sega 837-12875 MODEL3 STEP 1.5
  • GPU: 2x Sega 315-5830-B (Real3D Pro‑1000) @ 66 MHz
  • GPU Geometrizers: 2x Geometry Engine ASIC (66 MHz, 2x 32‑bit floating-point units)
  • Geometry performance: 10 million lit vertices/sec[n 30]
  • Floating-point performance: 1.1 GFLOPS (690 million MAC operations/sec)[n 31]
  • GPU ALU: 4x Mitsubishi 3D‑RAM (33 MHz)
  • Performance: 528 million operations/sec, 4 million tiles/sec
  • GPU Renderers: 4x Pixel Processors (66 MHz)
  • GPU Texture Mapping Units: 4x Texture Processors (66 MHz)
  • Floating-Point Performance: 1.3 GFLOPS (790 million MAC operations/sec)[n 32]
  • Geometry performance: 11 million lit vertices/sec[n 33]
  • Rendering Fillrate:
  • Framebuffer: 528 MPixels/s (write), 2.1 GPixels/s (erase)
  • Raw polygons: 300 MPixels/s (3 million triangles/sec), 200 MPixels/s (4 million triangles/sec)
  • Textured polygons: 260 MPixels/s, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
  • Texture Fillrate: 260 MTexels/s
  • Rendering Performance:
  • Raw polygons: 4 million triangles/sec, 7 million vectors/sec
  • Textured polygons: 2.6 million polygons/sec, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering

Bandwidth

  • Memory Bandwidth: 6.6 GB/s[n 34]
  • RAM Bandwidth: 5.1813 GB/s
  • Main RAM: 800 MB/s[n 36]
  • VRAM: 4.23984 GB/s
  • Sound RAM: 88.888889 MB/s
  • Other RAM: 52.571429 MB/s
  • ROM Bandwidth: 1.4184 GB/s

Step 2.0

The Sega Model 3 Step 2.0, released in 1997, was a substantial upgrade, with a higher CPU clock rate, significantly faster 3D engine (with an increased number of graphics chips), and more memory:[2]

  • CPU: IBM-Motorola PowerPC 603ev @ 166 MHz (498 MIPS,[5] 332 MFLOPS)

Graphics

  • Video Board: Sega 837-12716 MODEL3 STEP2
  • GPU: 6x Sega 315-6060 (Real3D Pro‑1000) @ 50 MHz[12][14]
  • 59 core processors: 2x Geometry Engine ASIC, 15x Mitsubishi 3D‑RAM ALU, 12x Pixel Processors,[2][15] 12x Texture Processors, 6 DMA devices, 6 tile generators, 6 Fragment Processors
  • 122 core units: 2x Geometry Engine ASIC, 90 Mitsubishi 3D‑RAM ALU units, 12x Pixel Processors, 12x Texture Processors, 2 DMA devices, 2 tile generators, 2 Fragment Processors
  • GPU Geometrizers: 6x Geometry Engine ASIC (50 MHz, 6x 32‑bit floating-point units)
  • Lighting: 12 light spots, 12 spot lights
  • Geometry performance: 24 million lit vertices/sec[n 39]
  • Floating-point performance: 2.7 GFLOPS (1.5 billion MAC operations/sec)[n 40]
  • GPU ALU: 15x Mitsubishi 3D‑RAM (33 MHz, 2-3 ALU per GPU)[21]
  • 90 core units: 60x 8‑bit ROP/blend units,[n 6] 30x 32‑bit Z‑compare units[n 6]
  • Bus width: 3840‑bit[n 41] internal, 960‑bit[n 42] external
  • Performance: 1.98 billion operations/sec, 15 million tiles/sec[25]
  • GPU Renderers: 12x Pixel Processors (50 MHz)
  • GPU Texture Mapping Units: 12x Texture Processors (50 MHz)
  • Texture RAM: 21 MB[n 43] on-board Mitsubishi CDRAM[n 6]
  • Floating-Point Performance: 3 GFLOPS (1.7 billion MAC operations/sec)[n 44]
  • Geometry performance: 25 million lit vertices/sec[n 45]
  • Rendering Fillrate:
  • Framebuffer: 1.9 GPixels/s (write), 7.9 GPixels/s (erase)
  • Raw polygons: 1.125 GPixels/s (11.25 million triangles/sec), 750 MPixels/s (15 million triangles/sec)
  • Textured polygons: 600 MPixels/s, with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering
  • Texture Fillrate: 600 MTexels/s
  • Rendering Performance:
  • Raw polygons: 15 million triangles/sec, 26.25 million vectors/sec
  • Textured polygons: 6 million polygons/sec (100-pixel polygons), with Gouraud shading, translucency, anti-aliasing, fog, lighting and Z-buffering

Memory

  • Memory: Up to 317 MB (136 MB main, 146.835693 MB video, 33.695312 MB sound, 320 KB other)
  • RAM: 57,567.75 KB (56.218505 MB)
  • Main RAM: 8 MB SDRAM[39]
  • VRAM: 47,959.75 KB (46.835693 MB)
  • Framebuffer RAM: 19,203.75 KB (18.75 MB Mitsubishi 3D-RAM, 3.75 KB pixel buffer SRAM cache)[22]
  • Texture RAM: 21,588 KB (21 MB Mitsubishi CDRAM, 84 KB SRAM cache,[26] 1 MB FIFO)
  • SGRAM: 7 MB[40][32]
  • Sound RAM: 1096 KB (1 MB DRAM)
  • Other RAM: 320 KB
  • ROM: Up to 260.625 MB (128 MB CROM, 100 MB VROM,[7] 32.625 MB SROM)[41]

Bandwidth

  • Memory Bandwidth: 13.4 GB/s[n 46]
  • Video memory: 11.8 GB/s[n 47]
  • RAM Bandwidth: 11.998127 GB/s
  • Main RAM: 666.666666 MB/s[n 48]
  • VRAM: 11.19 GB/s
  • Sound RAM: 88.888889 MB/s[n 51]
  • Other RAM: 52.571429 MB/s
  • Backup NVRAM: 28.571428 MB/s[n 52]
  • Network/Communication Board: 24 MB/s[n 53]
  • ROM Bandwidth: 1.4 GB/s

Step 2.1

The Sega Model 3 Step 2.1, released in 1998, is largely identical to Step 2.0, but with the following updates:[2]

  • Video Board: Sega 837-13368 MODEL3 STEP2.1
  • ROM Board: Sega 837-13022-02
  • ROM Board GAL: Sega 315-6090B (GAL16V8B) @ 100 MHz[8]

List of games

Step 1.0

Step 1.5

Step 2.0

Step 2.1

History

The Model 3 board went through a series of delays which frustrated Sega. Following their success with the Model 2's texture-mapping chip, Real3D (a spin-off company from Lockheed Martin) were unable to finalise the specifications of the Model 3's GPU, the Real3D Pro-1000 graphics processors, until late 1995 or early 1996. By this time, Real3D had partnered with Mitsubishi, which provided the ALU and graphics memory for the Pro-1000.[13] Sega had planned to release the Model 3 board in late 1995 along with three games, one of which, Indy 500, was reportedly downgraded to Model 2 hardware thanks to the troubles.[42][43] In late 1995, Yu Suzuki promised the Model 3 would deliver "the best 3D graphics".[44] When the Model 3 specification was finalized, it used two Real3D Pro-1000 processors, including four Mitsubishi 3D-RAM ALU chips.[2] The Model 3 eventually debuted, with Virtua Fighter 3 as its first game, at the AOU Show 1996 in February 1996, and was followed by Scud Race later that year. The board was officially supported until 1999, to make room for the Sega NAOMI and its successors, the Sega Hikaru and NAOMI 2.

The Model 3 went through a number of revisions (steps) in which improvements were made the system and board architecture was changed. These "steppings" mainly increased the clock speed of the CPU and the speed of the 3D engine, as well as minor changes to the board architecture.[2] Step 1.0 and Step 1.5 released in 1996, Step 2.0 in 1997, and Step 2.1 in 1998. Though there was much talk of Model 3 games being ported to the Sega Saturn, all home ports of Model 3 games were seen on the Sega Dreamcast, including the likes of Sega Rally 2, Virtua Fighter 3tb, Virtual-On Oratorio Tangram and Virtua Striker 2.

It was the most powerful game system in its time, an order of magnitude more powerful than PC graphics cards from 1998, which were still producing Model 2 quality graphics, two years years after the Model 3's release.[45] By 2000, the Sega Model 2 & 3 had sold over 200,000 *arcade systems worldwide,[46] making them some of the best-selling arcade game boards of all time. At around $15,000 each (for the Model 2, with the Model 3 costing higher), this amounts to at least over $3 billion revenue from cabinet sales, equivalent to over $5 billion as of 2017.

From the early 1970s, arcades had been at the forefront of graphical technology in video games. The Model 3 hardware as well as competitors from this era were also leading the industry from a graphical perspective at the time, compared to PCs which were still producing Model 2 quality graphics in 1998,[45] but the gap began to slowly narrow after that, as PCs would begin to benefit from hardware accelerated graphics towards the end of the decade. Beginning with the co-development of the Sega Dreamcast console and Sega NAOMI arcade system, both released in 1998, consoles and later PCs would slowly become the basis for arcade systems, rather than the reverse as it had been up until this point. The last proprietary Sega arcade systems would be the Sega Hikaru and Sega NAOMI 2, after which PCs would overtake arcade systems as the forefront of graphical technology. Today, arcade games are built primarily around controls and the experience one gets from a game as opposed to graphical potential. Complex motion cabinets, and large, unique forms of control unsuitable for households is what drives the arcade industry in the present day.

Production credits

Source:
Developer mentions[47][48]


Magazine articles

Main article: Sega Model 3/Magazine articles.

Photo gallery

  • Main board

  • Main board 2

  • Sound board

  • Complete board

  • Official Sega of Japan photograph of the Model 3 Step 2.0

Notes

  1. ↑ [Over 2 million lit quads/sec (over 1 million polygons/sec per Geometrizer)[19][20] Over 2 million lit quads/sec (over 1 million polygons/sec per Geometrizer)[19][20]]
  2. ↑ [908 MFLOPS (524 million MAC operations per second), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides[18] 908 MFLOPS (524 million MAC operations per second), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides[18]]
  3. ↑ [33 MHz, 2 ALU per GPU)[21][22] 33 MHz, 2 ALU per GPU)[21][22]]
  4. ↑ [33 MHz, 4 units per ALU 33 MHz, 4 units per ALU]
  5. ↑ [33 MHz, 2 units per ALU 33 MHz, 2 units per ALU]
  6. ↑ 6.0 6.1 6.2 6.3 [33 MHz 33 MHz]
  7. ↑ 7.0 7.1 [16 MHz 16 MHz]
  8. ↑ [16/33 MHz 16/33 MHz]
  9. ↑ [2x 640‑bit 2x 640‑bit]
  10. ↑ [27 MHz 27 MHz]
  11. ↑ [16x 32‑bit 16x 32‑bit]
  12. ↑ 12.0 12.1 [16/24/32‑bit 16/24/32‑bit]
  13. ↑ [4x 256‑bit 4x 256‑bit]
  14. ↑ [4x 32‑bit 4x 32‑bit]
  15. ↑ [16x 512 KB 16x 512 KB]
  16. ↑ [Cached DRAM, 33 MHz[26] Cached DRAM, 33 MHz[26]]
  17. ↑ [132 MFLOPS CPU (66 MAC operations per second),[27] 908 MFLOPS GPU (524 million MAC operations per second) 132 MFLOPS CPU (66 MAC operations per second),[27] 908 MFLOPS GPU (524 million MAC operations per second)]
  18. ↑ [PowerPC 603e: 790,419 lit vectors/sec (334 cycles per lit quad) (262 MAC operations, 4 divides) (1 cycle per MAC,[27] 18 cycles per divide)[28]
    Real3D Pro-1000: 8 million lit vertices/sec PowerPC 603e: 790,419 lit vectors/sec (334 cycles per lit quad) (262 MAC operations, 4 divides) (1 cycle per MAC,[27] 18 cycles per divide)[28]
    Real3D Pro-1000: 8 million lit vertices/sec]
  19. ↑ [3.8815 GB/s RAM, 1.018 GB/s ROM 3.8815 GB/s RAM, 1.018 GB/s ROM]
  20. ↑ [3.212 GB/s VRAM, 400 MB/s VROM 3.212 GB/s VRAM, 400 MB/s VROM]
  21. ↑ [64‑bit, 66 MHz[32] 64‑bit, 66 MHz[32]]
  22. ↑ [1.1 GB/s per GPU,[14] 546 MB/s per 3D-RAM[25] 1.1 GB/s per GPU,[14] 546 MB/s per 3D-RAM[25]] (Wayback Machine: 1998-01-22 14:39)
  23. ↑ [8x 264 MB/s[37] 8x 264 MB/s[37]]
  24. ↑ [2x 16‑bit, 22.222222 MHz[34] 2x 16‑bit, 22.222222 MHz[34]]
  25. ↑ [16‑bit, 14.285714 MHz[36] 16‑bit, 14.285714 MHz[36]]
  26. ↑ [16‑bit, 12 MHz[35] 16‑bit, 12 MHz[35]]
  27. ↑ [64‑bit, 66 MHz[8] 64‑bit, 66 MHz[8]]
  28. ↑ [2x 32‑bit,[30] 50 MHz[38] 2x 32‑bit,[30] 50 MHz[38]]
  29. ↑ 29.0 29.1 29.2 [2x 16‑bit, 22.6 MHz 2x 16‑bit, 22.6 MHz]
  30. ↑ [10.56 million lit vertices/sec 10.56 million lit vertices/sec]
  31. ↑ [1198 MFLOPS (691 million MAC operations/sec) 1198 MFLOPS (691 million MAC operations/sec)]
  32. ↑ [200 MFLOPS CPU (100 MAC operations per second),[27] 1198 MFLOPS GPU (691 million MAC operations per second) 200 MFLOPS CPU (100 MAC operations per second),[27] 1198 MFLOPS GPU (691 million MAC operations per second)]
  33. ↑ [PowerPC 603e: 1,197,604 lit vectors/sec (334 cycles per lit quad)
    Real3D Pro-1000: 10.56 million lit vertices/sec PowerPC 603e: 1,197,604 lit vectors/sec (334 cycles per lit quad)
    Real3D Pro-1000: 10.56 million lit vertices/sec]
  34. ↑ [5.1813 GB/s RAM, 1.4184 GB/s ROM 5.1813 GB/s RAM, 1.4184 GB/s ROM]
  35. ↑ [4.23984 GB/s VRAM, 528 MB/s VROM 4.23984 GB/s VRAM, 528 MB/s VROM]
  36. ↑ [64‑bit, 100 MHz[32] 64‑bit, 100 MHz[32]]
  37. ↑ [64‑bit, 100 MHz[8] 64‑bit, 100 MHz[8]]
  38. ↑ [2x 32‑bit, 66 MHz[38] 2x 32‑bit, 66 MHz[38]]
  39. ↑ [Over 6 million lit quads/sec (over 1 million polygons/sec per Geometrizer)[19][20] Over 6 million lit quads/sec (over 1 million polygons/sec per Geometrizer)[19][20]]
  40. ↑ [2724 MFLOPS (1.572 billion MAC operations/sec), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides 2724 MFLOPS (1.572 billion MAC operations/sec), 454 floating-point operations per lit quad: 262 MAC operations, 4 divides]
  41. ↑ [15x 256‑bit 15x 256‑bit]
  42. ↑ [15x 32‑bit 15x 32‑bit]
  43. ↑ [42x 512 KB 42x 512 KB]
  44. ↑ [332 MFLOPS CPU (166 MAC operations per second),[27] 2724 MFLOPS GPU (1.572 billion MAC operations per second) 332 MFLOPS CPU (166 MAC operations per second),[27] 2724 MFLOPS GPU (1.572 billion MAC operations per second)]
  45. ↑ [PowerPC 603e: 1,988,023 lit vectors/sec (334 cycles per lit quad)
    Real3D Pro-1000: 24 million lit vertices/sec PowerPC 603e: 1,988,023 lit vectors/sec (334 cycles per lit quad)
    Real3D Pro-1000: 24 million lit vertices/sec]
  46. ↑ [11.998127 GB/s RAM, 1.4 GB/s ROM 11.998127 GB/s RAM, 1.4 GB/s ROM]
  47. ↑ [11.19 GB/s VRAM, 560 MB/s VROM 11.19 GB/s VRAM, 560 MB/s VROM]
  48. ↑ [64‑bit, 83.333333 MHz[39] 64‑bit, 83.333333 MHz[39]]
  49. ↑ [546 MB/s per 3D-RAM 546 MB/s per 3D-RAM]
  50. ↑ [12x 264 MB/s[37] 12x 264 MB/s[37]]
  51. ↑ [2x 16‑bit, 22.222222 MHz[34] 2x 16‑bit, 22.222222 MHz[34]]
  52. ↑ [16‑bit, 14.285714 MHz[36] 16‑bit, 14.285714 MHz[36]]
  53. ↑ [16‑bit, 12 MHz[35] 16‑bit, 12 MHz[35]]
  54. ↑ [64‑bit, 100 MHz[8] 64‑bit, 100 MHz[8]]
  55. ↑ [2x 32‑bit, 70 MHz[38] 2x 32‑bit, 70 MHz[38]]

References

  1. ↑ htt (Wayback Machine: 2001-03-05 07:40)
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Sega Model 3 (MAME)
  3. ↑ 3.0 3.1 3.2 Model3.h (Supermodel)
  4. ↑ htt (Wayback Machine: 2001-03-06 00:57)
  5. ↑ 5.0 5.1 File:TSPC603R datasheet.pdf
  6. ↑ 6.0 6.1 Model3.cpp (Supermodel)
  7. ↑ 7.0 7.1 7.2 7.3 Hideki Sato Sega Interview (Edge)
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 File:GAL16V8B datasheet.pdf
  9. ↑ File:ST-103-R1-040194.pdf
  10. ↑ File:Sega Service Manual - Sega Saturn (PAL) - 013-1 - June 1995.pdf
  11. ↑ File:Model3 cpu1.jpg
  12. ↑ 12.0 12.1 12.2 12.3 12.4 File:Real3DPro1000ProductDescription.pdf
  13. ↑ 13.0 13.1 Press release: 1996-08-06: Mitsubishi's Graphics Memory Products Power REAL 3D's R3D/PRO-1000 Graphics Engine
  14. ↑ 14.0 14.1 14.2 File:Real3D100ArchitectureOverview.pdf
  15. ↑ 15.0 15.1 File:Real3D100ArchitectureOverview.pdf, page 12
  16. ↑ Real3D.cpp (Supermodel)
  17. ↑ TileGen (Supermodel)
  18. ↑ 18.0 18.1 18.2 18.3 Model 3 (Video)
  19. ↑ 19.0 19.1 File:Real3DPro1000ProductDescription.pdf, page 8
  20. ↑ 20.0 20.1 File:Real3DPro1000ProductDescription.pdf, page 16
  21. ↑ 21.0 21.1 File:M5M410092B datasheet.pdf
  22. ↑ 22.0 22.1 22.2 File:M5M410092FP datasheet.pdf
  23. ↑ A 10 Mb frame buffer memory with Z-compare and A-blend units
  24. ↑ htt (Wayback Machine: 2014-03-29 07:45)
  25. ↑ 25.0 25.1 25.2 25.3 25.4 25.5 htt (Wayback Machine: 1998-01-22 14:39)
  26. ↑ 26.0 26.1 26.2 File:M5M4V4169TP datasheet.pdf
  27. ↑ 27.0 27.1 27.2 27.3 PowerPC 603e: RISC Microprocessor User's Manual (page 35)
  28. ↑ PowerPC 603e: RISC Microprocessor User's Manual (page 252)
  29. ↑ File:Real3DPro1000ProductDescription.pdf, page 9
  30. ↑ 30.0 30.1 30.2 Real3D.h (Supermodel)
  31. ↑ File:GameOn US 06.pdf, page 7
  32. ↑ 32.0 32.1 32.2 32.3 File:KM4132G271A datasheet.pdf
  33. ↑ File:HM5241605 datasheet.pdf
  34. ↑ 34.0 34.1 34.2 File:HM514270 datasheet.pdf
  35. ↑ 35.0 35.1 35.2 File:N341256 datasheet.pdf
  36. ↑ 36.0 36.1 36.2 File:LH52B256 datasheet.pdf
  37. ↑ 37.0 37.1 File:DRAM Technology.pdf
  38. ↑ 38.0 38.1 38.2 File:MC88915 datasheet.pdf
  39. ↑ 39.0 39.1 File:TC59S1616AFT datasheet.pdf
  40. ↑ File:UPD4811650 datasheet.pdf
  41. ↑ Spikeout Final Edition (MAME)
  42. ↑ Next Generation, "November 1995" (US; 1995-10-24), page 16
  43. ↑ Edge, "October 1995" (UK; 1995-08-24), page 8
  44. ↑ File:SSM_UK_02.pdf, page 21
  45. ↑ 45.0 45.1 Second Hand Smoke - One up, two down
  46. ↑ ALL BUT WAR IS SIMULATION: THE MILITARY-ENTERTAINMENT COMPLEX
  47. ↑ https://www.4gamer.net/games/999/G999905/20210126043/ (Wayback Machine: 2021-02-05 15:00)
  48. ↑ https://game.watch.impress.co.jp/docs/news/758667.html (Wayback Machine: 2023-11-10 10:30)


Sega arcade boards
Originating in arcades









Console-based hardware








84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14









































PC-based hardware








05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23





























Retrieved from "https://segaretro.org/index.php?title=Sega_Model_3&oldid=934606"