Sega System 18

Fast Facts on the Sega System 18
Made by: Sega Release Date RRP Code World 1989  ? {{#ifeq: 2 | 3 |

The Sega System 18 is an arcade system board released by Sega in 1989. The System 18 is primarily a soup-ed System 16, offering superior sound, more tile laters and extra graphics options.

System 18 boards had a very short run of games but most adhere to JAMMA standard, unlike previous systems. Most of these games also have the "suicide battery" as associated with Sega's System 16 hardware.

Technical Specifications

• Main CPU: Motorola 68000 @ 10 MHz
• Sound CPU: Zilog Z80 @ 8 MHz
• Sound chip: 2 x Yamaha YM3438 @ 8 MHz + Ricoh RF5c68 @ 10 MHz (8 Channel PCM chip, remarked as Sega Custom 315)
• Display resolution: 320 x 224
• Colors: 4096
• Board composition: Main board + ROM board
• Graphical capabilities: 128 sprites on screen at one time, 4 tile layers, 1 text layer, 1 sprite layer with hardware sprite zooming, translucent shadows

Gallery

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  Main PCB

List of Games

• Alien Storm
• Bloxeed (1989 — Japan only; all regions would see it on System C)
• Clutch Hitter
• D. D. Crew
• Desert Breaker
• Laser Ghost
• Michael Jackson's Moonwalker
• Shadow Dancer
• Where's Wally!