Difference between revisions of "Sega System 2"
From Sega Retro
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* Board composition: Main board + [[ROM]] board | * Board composition: Main board + [[ROM]] board | ||
* [[Tile Layer|Tilemap]] planes: 2 background layers (1 static, 1 scrolling), 8×8 tiles | * [[Tile Layer|Tilemap]] planes: 2 background layers (1 static, 1 scrolling), 8×8 tiles | ||
| − | + | :* Tilemap sizes: 512×512 for scrolling plane, 256×256 for fixed plane{{ref|https://github.com/mamedev/mame/tree/master/src/mame/video/system1.cpp}} | |
===Memory=== | ===Memory=== | ||
| Line 27: | Line 27: | ||
* Memory: 385.5–487.5 KB (100–106 KB main, 251.5–347.5 KB video, 34 KB sound) | * Memory: 385.5–487.5 KB (100–106 KB main, 251.5–347.5 KB video, 34 KB sound) | ||
* [[RAM]]: 32.5 [[Byte|KB]] ([[SRAM]]){{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.cpp}} | * [[RAM]]: 32.5 [[Byte|KB]] ([[SRAM]]){{ref|https://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.cpp}} | ||
| − | + | :* Main: 4 KB | |
| − | + | :* [[VRAM|Video]]: 26.5 KB (4 KB video, 2 KB [[sprite]] attributes, 1.5 KB sprite line buffers, 2 KB palette, 4 KB collision) | |
| − | + | :* Sound: 2 KB | |
* [[ROM]]: 353–455 KB | * [[ROM]]: 353–455 KB | ||
| − | + | :* Main: 96–102 KB | |
| − | + | :* Video: 225–321 KB (96 KB tiles, 128–224 KB sprites, 1 KB palette) | |
| − | + | :* Sound: 32 KB | |
}} | }} | ||
Revision as of 19:43, 17 October 2018
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| Sega System 2 | |||||||||
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| Manufacturer: Sega | |||||||||
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The Sega System 2 is an arcade platform introduced by Sega in 1985. It is a successor to the Sega System 1, though largely an upgrade, utilising the same Zilog Z80 CPU, sound chips, and Sega graphics chipset. The major upgrades of the System 2 are the addition of a ROM board, faster RAM, and a larger 512×512 background scrolling plane.
The System 2 was supported alongside the System 1, with its last game being released in 1988.
Technical specifications
- See Sega System 1 Specifications for details on underlying System 1 specifications.
The following are changes that System 2 made to System 1 specifications.
- Board composition: Main board + ROM board
- Tilemap planes: 2 background layers (1 static, 1 scrolling), 8×8 tiles
- Tilemap sizes: 512×512 for scrolling plane, 256×256 for fixed plane[1]
Memory
- ROM: 353–455 KB
- Main: 96–102 KB
- Video: 225–321 KB (96 KB tiles, 128–224 KB sprites, 1 KB palette)
- Sound: 32 KB
List of games
- Heavy Metal (1985)
- Choplifter (1985)
- Shooting Master (1985)
- 119 (1986)
- Warball (1986)
- Wonder Boy (also released on Sega System 1) (1986)
- Dakkochan House (1987)
- Toki no Senshi: Chrono Soldier (1987)
- Wonder Boy in Monster Land (1987)
- UFO Senshi Youko Chan (1988)
Photo gallery
PCB
References
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