The Namco System 86 is an 8-bit arcade system board which was first used by Namco in 1986; it was the first board from that company to use a Yamaha YM2151 FM sound chip, and was succeeded by the more powerful Namco System 1 (originally called Namco System 87) arcade system board when the company went 16-bit in 1987.
Processors:
Video:
Sound: