Difference between revisions of "Sega System 2"

Revision as of 03:23, 6 October 2016

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: 385.5–487.5 KB (100–106 KB main, 251.5–347.5 KB video, 34 KB sound)
RAM: 32.5 KB (SRAM)^[2]
- Main: 4 KB
- 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^[3]^[4]
- Main: 96–102 KB
- Video: 225–321 KB (96 KB tiles, 128–224 KB sprites, 1 KB palette)
- Sound: 32 KB

Gallery

PCB

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)

References

Sega arcade boards
Originating in arcades
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 VIC Dual G80 Zaxxon VCO Object System 1 LaserDisc Appoooh Hang-On System 2 System 16 OutRun Gigas X Board Y Board System 24 System 18 System 32 Model 1 Model 2 H1 Board Model 3
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 SG-1000 System E System C Mega-Tech System Mega Play Sega Titan Video NAOMI Hikaru NAOMI 2 Atomiswave System SP Chihiro Triforce
PC-based hardware
05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Lindbergh Europa-R RingEdge RingWide RingEdge 2 Nu Nu 1.1 Nu 2 ALLS

[https:.2F.2Fgithub.com.2Fmamedev.2Fmame.2Ftree.2Fmaster.2Fsrc.2Fmame.2Fvideo.2Fsystem1.cpp-1] ttps://github.com/mamedev/mame/tree/master/src/mame/video/system1.cpp

[https:.2F.2Fgithub.com.2Fmamedev.2Fmame.2Fblob.2Fmaster.2Fsrc.2Fmame.2Fdrivers.2Fsystem1.cpp-2] ttps://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.cpp

[.5Bhttp:.2F.2Fmamedb.com.2Fgame.2Fhvymetal_Heavy_Metal_.28MAME.29.5D-3] Heavy Metal (MAME)

[.5Bhttp:.2F.2Fmamedb.com.2Fgame.2Fshtngmst_Shooting_Master.5D-4] Shooting Master

[1]

[2]

[3]

[4]

@@ Line 23: / Line 23: @@
 ===Memory===
 {{multicol|
-* Memory: 385.5–487.02344 KB (100–105.52344 KB main, 238.5–334.5 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]]: 13.5 KB (4 KB video, 2 KB [[sprite]] attributes, 1.5 KB sprite line buffers, 2 KB palette, 4 KB collision)
+** [[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]]: 353–454.52344 KB{{ref|[http://mamedb.com/game/hvymetal Heavy Metal (MAME)]}}{{ref|[http://mamedb.com/game/shtngmst Shooting Master]}}
+* [[ROM]]: 353–455 KB{{ref|[http://mamedb.com/game/hvymetal Heavy Metal (MAME)]}}{{ref|[http://mamedb.com/game/shtngmst Shooting Master]}}
-** Main: 96–101.52344 KB
+** Main: 96–102 KB
 ** Video: 225–321 KB (96 KB tiles, 128–224 KB sprites, 1 KB palette)
 ** Sound: 32 KB