Difference between revisions of "Sega System 1"

From Sega Retro
Line 58: Line 58:
 
* Refresh rate: 60 Hz
 
* Refresh rate: 60 Hz
 
** Frame rate: 60 FPS
 
** Frame rate: 60 FPS
−
* Color palette table: 1568
+
* Color palette: 1568
 
** Colors on screen: 768
 
** Colors on screen: 768
 
* [[Sprite]]s:
 
* [[Sprite]]s:

Revision as of 02:58, 4 October 2016

System1 PCB1.jpg
Sega System 1
Manufacturer: Sega
Release Date RRP Code

The Sega System 1 is an arcade platform introduced by Sega in 1983,[1] based on earlier 1982 prototype hardware. 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 (8/16-bit instructions, 0.58 MIPS)
  • Sound CPU: Zilog Z80 @ 4 MHz (8/16-bit instructions, 0.58 MIPS)
  • Sound chips: Sega SN76496 @ 4 MHz, Sega SN76496 @ 2 MHz
  • Graphics chipset:[2]
    • Sega 315-5011 sprite line comparator
    • Sega 315-5012 sprite generator
    • Sega 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 plane: Line buffer, 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 rate: 10 MHz
    • Fillrate: 10 MPixels/s, 166,402 pixels per frame, 640 texels per scanline

Prototype

Super Locomotive in 1982 ran on prototype arcade hardware that was very similar to the Sega System 1 later released in 1983. Super Locomotive included the following technical specifications:[5][6][7]

  • Main CPU: Zilog Z80 @ 4 MHz
  • Audio CPU: Zilog Z80 @ 4 MHz
  • Sound chips: SN76496 @ 4 MHz, SN76496 @ 2 MHz
  • Graphics chipset:
    • Sega 315-5011 sprite line comparator
    • Sega 315-5012 sprite generator
  • Display resolution: 248×224
    • Overscan resolution: 256×256
  • Refresh rate: 60 Hz
    • Frame rate: 60 FPS
  • Color palette: 1568
    • Colors on screen: 768
  • Sprites:
  • Background planes: 2 tilemap layers

Gallery

  • PCB 1

  • PCB 2

List of Games

References

  1. ↑ http://sega.jp/fb/segahard/sc3000/gallery.html
  2. ↑ 2.0 2.1 2.2 2.3 2.4 https://github.com/mamedev/mame/tree/master/src/mame/drivers/system1.cpp
  3. ↑ 3.0 3.1 https://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.cpp
  4. ↑ 4.0 4.1 4.2 https://github.com/mamedev/mame/tree/master/src/mame/video/system1.cpp
  5. ↑ Super Locomotive (MAME)
  6. ↑ Super Locomotive video hardware (MAME)
  7. ↑ Sega Z80 Based Hardware (System 16)


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_1&oldid=352760"