The Namco System 22 is the successor to the Namco System 21 arcade system board. It debuted in 1992 with Sim Drive in Japan,^[1] followed by a worldwide debut in 1993 with Ridge Racer.

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Namco System 22

Manufacturer	Namco
Type	Arcade system board
CPU	Motorola 68020 32-bit
Predecessor	Namco System 21
Successor	Namco System 11

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The System 22 was designed by Namco with assistance from graphics & simulation company Evans & Sutherland. Graphical features include texture mapping, Gouraud shading, transparency effects, and depth cueing, thanks to the Evans & Sutherland 'TR3' chip/chipset, which stands for: Texture Mapping, Real-Time, Real-Visual, Rendering System. The main CPU provides a scene description to the TR3 graphics processing unit and a bank of DSP chips which perform 3D calculations.

A variant of the system, called the Super System 22, was released in 1995. The hardware was largely similar to the System 22, but with a slightly higher polygon rate and more special effects possible.

• Main CPU: Motorola 68020 32-bit @ 24.576 MHz
• DSP: 2x Texas Instruments TMS32025 @ 49.152 MHz (exact number of DSPs may vary)
• GPU: Evans & Sutherland TR3 (Texture Mapping, Real-Time, Real-Visual, Rendering System)
  • Features: Texture mapping, Gouraud shading, transparency effects, depth cueing, 16.7 million colors, 240,000 polygons/second^[2]
• Sound CPU: Mitsubishi M37702 (System 22 Games) or M37710 (Super System 22 Games) @ 16.384 MHz
• Sound Chip: Namco C352 (32 voices, 4 channels @ 16-bit, support for 8-bit linear or μ-law PCM samples)^[3]
• + Namco Custom Chips