Sega H1 Board

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The Sega H1 Board is an arcade board made by Sega. Hardware-wise, it crosses the bridge between the Sega System 32 and the Sega Model 1 and Model 2, and uses hardware similar to the Sega Saturn and ST-V. Only two games are known to use it.

Specifications

• Board composition: CPU Board + Video Board + ROM Board
• CPU: 3× processors, 32-bit, 28.63636 MHz, 47.43636 MIPS
  • Main CPU: Hitachi SH-2 @ 28.63636 MHz (32-bit, 28.63636 MIPS)
  • Sub-CPU: Hitachi SH-1 @ 11.2896 MHz (32-bit, 16 MIPS)
  • Sound CPU: Toshiba TMP68HC000N @ 16 MHz (16/32-bit, 2.8 MIPS)
• Sound processors: 2× Yamaha SCSP (Saturn Custom Sound Processor) YMF292
  • Sound DSP: 2× Yamaha FH1 DSP (Digital Signal Processor) @ 22.579 MHz (24-bit, 128-step, 8 parallel instructions)
  • Bus width: 48-bit (2× 24-bit) internal, 32-bit (2× 16-bit) external

Graphics

• GPU: Sega 837-9621 Video Board @ 50 MHz
  • Bus width: 160-bit
  • Graphical capabilities: Scrolling, DMA
  • Sprite/Texture capabilities: Sprite/Texture compression, RLE compression, zooming, rotation, sprite/texture cache
• Display: 2-4 monitors, progressive scan
• Display resolution:
  • 2 monitors: 992×384 (496×384 per monitor)
  • 4 monitors: 1280×224 to 1280×240 (320×224 to 320×240 per monitor)
• Overscan resolution:
  • 2 monitors: 1280×512 (640×512 per monitor)
  • 4 monitors: 1280×224 to 1664×262 (320×224 to 416×262 per monitor)
• Refresh rate: 57.0426 to 60 Hz
  • Frame rate: 57.0426 to 60 frames/sec
• Color depth: 16,777,216 colors (24/32-bit), 65,536 colors (16-bit), 32,768 colors (15-bit)
• Pixel fillrate: 50 million pixels/sec
• Sprite/Texture fillrate: 50 million texels/sec
  • Maximum texels per frame: 876,537
  • Maximum texels per scanline: 3913

RAM

• CPU Board: 3140 KB (2 MB SDRAM, 1 MB DRAM, 64 KB SRAM, 4 KB FRAM)
• Video Board: 5.125 MB (2.25 MB FPM DRAM, 2 MB DRAM, 896 KB SRAM)

Softography

• Cool Riders (1995)
• Aqua Stage (1995)

CollapseSega arcade boards
Originating in arcades
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Console-based hardware
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PC-based hardware
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