Difference between revisions of "Sega System 2"

From Sega Retro
Line 20: Line 20:
 
* [[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}}
 
** 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: 128.5 KB (100 KB main, 238.5 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
 
** Main: 4 KB
 
** [[VRAM|Video]]: 13.5 KB (4 KB video, 2 KB [[sprite]] attributes, 1.5 KB sprite line buffers, 2 KB palette, 4 KB collision)
 
** [[VRAM|Video]]: 13.5 KB (4 KB video, 2 KB [[sprite]] attributes, 1.5 KB sprite line buffers, 2 KB palette, 4 KB collision)
 
** Sound: 2 KB
 
** Sound: 2 KB
 +
* [[ROM]]: 353 KB{{ref|[http://mamedb.com/game/hvymetal Heavy Metal (MAME)]}}
 +
** Main: 96 KB
 +
** Video: 225 KB (96 KB tiles, 128 KB sprites, 1 KB palette)
 +
** Sound: 32 KB
  
 
==Gallery==
 
==Gallery==

Revision as of 02:59, 6 October 2016

System2 PCB.jpg
Sega System 2
Manufacturer: Sega
Release Date RRP Code

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

  • Memory: 128.5 KB (100 KB main, 238.5 KB video, 34 KB sound)
  • RAM: 32.5 KB SRAM[2]
    • Main: 4 KB
    • Video: 13.5 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 KB[3]
    • Main: 96 KB
    • Video: 225 KB (96 KB tiles, 128 KB sprites, 1 KB palette)
    • Sound: 32 KB

Gallery

  • PCB

List of Games

References

  1. ↑ https://github.com/mamedev/mame/tree/master/src/mame/video/system1.cpp
  2. ↑ https://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.cpp
  3. ↑ Heavy Metal (MAME)


Sega arcade boards
Originating in arcades









Console-based hardware








84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14









































PC-based hardware








05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23





























Retrieved from "https://segaretro.org/index.php?title=Sega_System_2&oldid=353198"