Sega System 1
From Sega Retro
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| Sega System 1 | |||||
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| Manufacturer: Sega | |||||
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The Sega System 1 is an arcade platform introduced by Sega in July 1983.[1] It is a Z80-based platform and the first in the decade-long "System" series of arcade boards.
The System 1 was a relatively popular arcade board for its day, supported not only by Sega, but by Japanese developers Coreland and VIC Tokai between 1983 and 1987. In 1985 it was succeeded by the slightly more powerful Sega System 2 board, though new games were released for both systems concurrently. Many of the System 1's games were ported to the SG-1000 and Sega Master System consoles.
Specifications
- Board composition: One board
- Main CPU: Zilog Z80 @ 4 MHz (8-bit & 16-bit instructions @ 0.58 MIPS)
- Sound CPU: Zilog Z80 @ 4 MHz (8-bit & 16-bit instructions @ 0.58 MIPS)
- Sound chips: Sega SN76496 @ 4 MHz, Sega SN76496 @ 2 MHz
- GPU chipset: [2]
- Sega 315-5011 sprite line comparator
- Sega 315-5012 sprite generator
- 315-5049 tilemap chip
- MCU: Intel 8751 [3]
- RAM: 82 KB [3]
- Main: 4 KB
- Video: 12 KB (4 KB video, 2 KB sprites, 2 KB palette, 4 KB collision)
- Sound: 2 KB
- MCU: 64 KB
- Video resolution: 256×224 (display), 640×260 (overscan) [2]
- Refresh rate: 60.0952 Hz (V-sync)
- Color palette: 4096 [4]
- Colors on screen: 2048 [2]
- Tilemap planes: 2 background layers (1 static, 1 scrolling), 8×8 tiles [4][2]
- Tilemap sizes: 256×256 for both planes
- Sprite capabilities: Dual line buffers, double buffering, 32 sprites per scanline, 16 colors per sprite, sprite flipping, hardware collision detection [4][2]
- Sprite sizes: 8 to 256 pixels width, 8 to 256 pixels height
- Pixel clock cycles: 10 MHz (60.0952 Hz refresh rate)
- Sprite pixel/texel fillrate: 10 million pixels/texels per second, 166,402 pixels/texels per frame (260 scanlines), 640 sprite pixels/texels per scanline
Gallery
PCB 1
PCB 2
List of Games
- Regulus (1983)
- Star Jacker (1983)
- Up'n Down (1983)
- Bull Fight (1984)
- Flicky (1984)
- Mister Viking (1984)
- Spatter (1984)
- SWAT (1984)
- Water Match (1984)
- 4D Warriors (1985)
- Choplifter (1985)
- I'm Sorry (1985)
- My Hero (1985)
- Pitfall II (1985)
- Sega Ninja (1985)
- Teddy Boy Blues (1985)
- Brain (1986)
- Gardia (1986)
- Noboranka (1986)
- Rafflesia (1986)
- Wonder Boy (also released on Sega System 2) (1986)
- Wonder Boy Deluxe (1986)
- Block Gal (1987)
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