Difference between revisions of "Sega System 24"

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The '''Sega System 24''' is an arcade platform released by [[Sega]] in the late 1980s. The System 24 is quite different from other "System" arcade boards - primarily it handles high resolution games with more colours, rather than serving as a direct successor to the standard [[Sega System 16]] arcade hardware (this task was reserved for the [[Sega System 32]]).
 
The '''Sega System 24''' is an arcade platform released by [[Sega]] in the late 1980s. The System 24 is quite different from other "System" arcade boards - primarily it handles high resolution games with more colours, rather than serving as a direct successor to the standard [[Sega System 16]] arcade hardware (this task was reserved for the [[Sega System 32]]).
  
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==Specifications==
 
The System 24 uses two [[Motorola 68000]] processors at 10 MHz. One is for booting, while the other is used by the game. The board holds 1360KB of RAM and 256kB of [[ROM]], and was the first Sega arcade system that required a medium resolution arcade monitor.  4352 colors can be used on-screen from a selectable 32,768, and the system can support up to 2048 sprites on-screen at once.
 
The System 24 uses two [[Motorola 68000]] processors at 10 MHz. One is for booting, while the other is used by the game. The board holds 1360KB of RAM and 256kB of [[ROM]], and was the first Sega arcade system that required a medium resolution arcade monitor.  4352 colors can be used on-screen from a selectable 32,768, and the system can support up to 2048 sprites on-screen at once.
  
 
Sound is driven by a [[YM2151]] at 4MHz; it is capable of delivering 8 channels of FM sound in addition to a DAC used for sound effects and speech synthesis. Early System 24s loaded their program off of floppy disks. Some later games such as ''[[Bonanza Bros.]]'' use CD-ROMs or hardware ROM boards as storage. No matter which storage device is used, a special security chip is required for each game an operator wants to play.
 
Sound is driven by a [[YM2151]] at 4MHz; it is capable of delivering 8 channels of FM sound in addition to a DAC used for sound effects and speech synthesis. Early System 24s loaded their program off of floppy disks. Some later games such as ''[[Bonanza Bros.]]'' use CD-ROMs or hardware ROM boards as storage. No matter which storage device is used, a special security chip is required for each game an operator wants to play.
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===Technical Specifications===
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*CPU: [[Motorola 68000|Hitachi FD1094]] @ 10 MHz & [[Motorola 68000]] @ 10 MHz (16-bit & 32-bit instructions @ 3.5 [[wikipedia:Instructions per second|MIPS]])
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*[[wikipedia:Sound chip|Sound chips]]: [[Yamaha YM2151]] @ 4 MHz (8 FM synthesis channels), DAC (sound effects and speech synthesis)
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**Audio output: Stereo speakers, stereo headphones
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*GPU chipset: Sega 315-5242 Color Encoder 315-5292 Tilemap Generator, 315-5293 Sprite Generator, 315-5294 Priority Mixer, 315-5295 Object Generator
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**Graphical capabilities: Sprite zoom, scrolling, row & column scrolling, parallax scrolling
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*Memory:
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**[[RAM]]: 1360–1616 KB
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***Main RAM: 512 KB (256 KB per CPU)
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***[[VRAM|Video RAM]]: 848–1104 KB (16 KB colors, 192 KB tilemaps, 384 KB framebuffer [[wikipedia:Dual-ported RAM|DP]] VRAM, 256–512 KB sprite DRAM)
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**[[ROM]]: 256 KB
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*Storage media: Floppy disk, ROM board
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*Resolution: 496×384 (display), 656×424 (overscan),{{ref|https://github.com/mamedev/mame/tree/master/src/mame/drivers/segas24.c}} progressive scan
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*Color palette: 98,304
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**Sega's 16-bit arcade color palette: 15-bit RGB high color depth (32,768 colors) and 1-bit shadow & highlight that triples up to 98,304 colors
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*Colors on screen: 16,384
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*[[Tile Layer|Tilemaps]]:
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**Tilemap layers: 4 (2 scrolling and 2 windowed)
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**Tile size: 8×8 pixels
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**Tiles per scrolling tilemap: 4096
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**Scrolling tilemap size: 512×512 pixels
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*[[Sprite]]s:
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**Colors per sprite: 16 to 256
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**Sprite size: 8 to 1024 pixels in width/height
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**Sprite virtual space: 4096×4096 pixels
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**Sprite pixels/texels per scanline: 4096
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**Sprites per scanline: 512
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**Sprites on screen: 2048
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**Framebuffers: Dual framebuffers @ 512×384 pixels each, double buffering
  
 
==Games==
 
==Games==

Revision as of 13:52, 9 September 2015

System24.jpg
Sega System 24
Manufacturer: Sega
Release Date RRP Code

The Sega System 24 is an arcade platform released by Sega in the late 1980s. The System 24 is quite different from other "System" arcade boards - primarily it handles high resolution games with more colours, rather than serving as a direct successor to the standard Sega System 16 arcade hardware (this task was reserved for the Sega System 32).

Specifications

The System 24 uses two Motorola 68000 processors at 10 MHz. One is for booting, while the other is used by the game. The board holds 1360KB of RAM and 256kB of ROM, and was the first Sega arcade system that required a medium resolution arcade monitor. 4352 colors can be used on-screen from a selectable 32,768, and the system can support up to 2048 sprites on-screen at once.

Sound is driven by a YM2151 at 4MHz; it is capable of delivering 8 channels of FM sound in addition to a DAC used for sound effects and speech synthesis. Early System 24s loaded their program off of floppy disks. Some later games such as Bonanza Bros. use CD-ROMs or hardware ROM boards as storage. No matter which storage device is used, a special security chip is required for each game an operator wants to play.

Technical Specifications

  • CPU: Hitachi FD1094 @ 10 MHz & Motorola 68000 @ 10 MHz (16-bit & 32-bit instructions @ 3.5 MIPS)
  • Sound chips: Yamaha YM2151 @ 4 MHz (8 FM synthesis channels), DAC (sound effects and speech synthesis)
    • Audio output: Stereo speakers, stereo headphones
  • GPU chipset: Sega 315-5242 Color Encoder 315-5292 Tilemap Generator, 315-5293 Sprite Generator, 315-5294 Priority Mixer, 315-5295 Object Generator
    • Graphical capabilities: Sprite zoom, scrolling, row & column scrolling, parallax scrolling
  • Memory:
    • RAM: 1360–1616 KB
      • Main RAM: 512 KB (256 KB per CPU)
      • Video RAM: 848–1104 KB (16 KB colors, 192 KB tilemaps, 384 KB framebuffer DP VRAM, 256–512 KB sprite DRAM)
    • ROM: 256 KB
  • Storage media: Floppy disk, ROM board
  • Resolution: 496×384 (display), 656×424 (overscan),[1] progressive scan
  • Color palette: 98,304
    • Sega's 16-bit arcade color palette: 15-bit RGB high color depth (32,768 colors) and 1-bit shadow & highlight that triples up to 98,304 colors
  • Colors on screen: 16,384
  • Tilemaps:
    • Tilemap layers: 4 (2 scrolling and 2 windowed)
    • Tile size: 8×8 pixels
    • Tiles per scrolling tilemap: 4096
    • Scrolling tilemap size: 512×512 pixels
  • Sprites:
    • Colors per sprite: 16 to 256
    • Sprite size: 8 to 1024 pixels in width/height
    • Sprite virtual space: 4096×4096 pixels
    • Sprite pixels/texels per scanline: 4096
    • Sprites per scanline: 512
    • Sprites on screen: 2048
    • Framebuffers: Dual framebuffers @ 512×384 pixels each, double buffering

Games

Physical Scans

  • EU Flyer

External links


Sega arcade boards
Originating in arcades









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