Difference between revisions of "Sega NAOMI 2"

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The '''Sega NAOMI 2''' is an arcade board developed by [[Sega]] and is a successor to [[Sega NAOMI]] hardware. It was originally released in 2000, and stands as a beefed up version of the NAOMI specification. It is also fully backwards compatible with its predecessor.
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The '''Sega NAOMI 2''' is an arcade board developed by [[Sega]] and is a successor to [[Sega NAOMI]] hardware. It was originally released in 2000, and stands as a beefed up version of the NAOMI specification. It is also fully backwards compatible with its predecessor. It was more affordable than the [[Sega Hikaru]] arcade system that preceded it.
  
 
The NAOMI 2 is by and large a more powerful successor of the NAOMI, adding a secondary CPU and GPU at higher clock rates, adding a new T&L GPU, and increasing the main graphics memory. This leads to games with much more polygons than a NAOMI game, rendered at much faster speeds, while the new T&L GPU adds advanced lighting and particle effects.
 
The NAOMI 2 is by and large a more powerful successor of the NAOMI, adding a secondary CPU and GPU at higher clock rates, adding a new T&L GPU, and increasing the main graphics memory. This leads to games with much more polygons than a NAOMI game, rendered at much faster speeds, while the new T&L GPU adds advanced lighting and particle effects.

Revision as of 07:01, 8 June 2015

NAOMI2.jpg
Sega NAOMI 2
Manufacturer: Sega
Release Date RRP Code

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The Sega NAOMI 2 is an arcade board developed by Sega and is a successor to Sega NAOMI hardware. It was originally released in 2000, and stands as a beefed up version of the NAOMI specification. It is also fully backwards compatible with its predecessor. It was more affordable than the Sega Hikaru arcade system that preceded it.

The NAOMI 2 is by and large a more powerful successor of the NAOMI, adding a secondary CPU and GPU at higher clock rates, adding a new T&L GPU, and increasing the main graphics memory. This leads to games with much more polygons than a NAOMI game, rendered at much faster speeds, while the new T&L GPU adds advanced lighting and particle effects.

As with the NAOMI, the NAOMI 2 was also available in GD-ROM and Satellite Terminal variants.

Technical Specifications

  • Main CPU: 2× Hitachi SH-4 @ 400 MHz[1]
  • Sound engine: Yamaha AICA Super Intelligent Sound Processor @ 67 MHz
    • Internal CPU: 32-bit ARM7 RISC CPU @ 45 MHz [1]
    • CPU performance: 17 MIPS[3]
    • PCM/ADPCM: 16-bit depth, 48 kHz sampling rate (DVD quality),[4] 128 channels [2]
    • Other features: DSP, sound synthesizer
  • Main T&L geometry GPU coprocessor: VideoLogic Elan @ 100 MHz [3]
  • Rasterizer GPU: 2× NEC-VideoLogic PowerVR 2 (PVR2DC/CLX2) [5] @ 200 MHz[1]
    • Bits: 64-bit per GPU[1]
    • Texture mapping: Bump mapping, mipmapping,[6] environment mapping, texture compression,[3] multi-texturing,[7] perspective correction[4]
    • Filtering: Point filtering,[4] bilinear filtering,[3] trilinear filtering, anisotropic filtering[4]
    • Anti-aliasing: Super-sampling anti-aliasing (SSAA),[4] full-scene anti-aliasing (FSAA)[7]
    • Alpha blending: 256 levels of transparency,[4] multi-pass blending,[7] translucency sorting[7]
    • Shading: Perspective-correct ARGB Gouraud shading,[7] shadows[4]
    • Rendering: ROP (render output unit), tiled rendering, 32-bit floating-point Z-buffering, 32-bit floating-point hidden surface removal,[7] 256 fog effects,[4] per-pixel table fog,[7] per-pixel lighting[8]
    • Other capabilities: Quad polygons, triangle polygons, GMV (general modifier volumes)[4]
  • Operating system: Custom Windows CE,[4] with DirectX 6.0, Direct3D and OpenGL support
  • RAM: 168 MB
    • Main SDRAM: 32 MB (100 MHz) [6]
    • VRAM: 128 MB
      • PowerVR2 SDRAM: 64 MB (100 MHz)[2]
      • Elan geometry VRAM: 32 MB[2]
      • Model data VRAM: 32 MB [7]
    • Sound DRAM: 8 MB[2]
  • Storage media: ROM board, GD-ROM drive[2]
  • Color depth: 32-bit ARGB,[4] 16,777,216 colors (24-bit color) [8] with 8-bit (256 levels) alpha blending,[2] YUV and RGB color spaces, color key overlay[7]
  • Display resolution: 31 kHz horizontal sync, 60 Hz refresh rate, VGA,[9] progressive scan
    • Single monitor: 496×384 to 800×608 pixels[10]
    • Dual monitor: 992×768 to 1600×608 pixels
  • Bandwidth: 6 GB/sec[2]
  • GFLOPS performance: 7.5 GFLOPS[1]
  • Textures per pass: 10[1]
  • Polygon performance:
    • 10 million textured polygons/sec, with 6 light sources per polygon,[2] shadows, trilinear filtering and other effects
    • 28 million textured polygons/sec (14 million per rasterizer GPU), with lighting, shadows and trilinear filtering
    • 40 million polygons/sec (20 million per CPU & rasterizer GPU), with lighting
    • 100 million polygons/sec (raw),[1] without lighting or texture mapping
  • Fillrate:
    • Rendering: 2 billion pixels/sec[5] (with transparent polygons) to over 6.4 billion pixels/sec (with opaque polygons)
    • Textures: 200 million texels/sec
  • Extensions: communication, 4-channel surround sound, PCI, MIDI, RS-232C
  • Connection: JAMMA Video compliant

List of Games

NAOMI 2 Games

NAOMI 2 GD-ROM Games

NAOMI 2 Satellite Terminal Games


Sega arcade boards
Originating in arcades








  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 http://www.ign.com/boards/threads/noami-2-future.6157195/
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 http://www.segatech.com/arcade/naomi2/index.html
  3. ↑ 3.0 3.1 3.2 http://computer.org/micro/articles/dreamcast_2.htm (Wayback Machine: 2000-08-23 20:47)
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 http://segatech.com/technical/overview/index.html
  5. ↑ 5.0 5.1 http://ign.com/articles/2000/09/21/jamma-2000-naomi-2-revealed
  6. ↑ http://www.segatech.com/arcade/naomi1/index.html
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 http://www3.sharkyextreme.com/hardware/reviews/video/neon250/2.shtml (Wayback Machine: 2007-08-11 10:20)
  8. ↑ http://ign.com/articles/2000/01/22/zombie-revenge-3
  9. ↑ http://wiki.arcadeotaku.com/w/Sega_Naomi_Universal
  10. ↑ http://cadcdev.sourceforge.net/docs/kos-current/video_8h_source.html


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