Sega H1 Board

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Sega H1 Board
Manufacturer: Sega
Release Date RRP Code

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, Communication Board, ROM Board
• Main CPU: Hitachi SH-2 @ 28.63636 MHz (32-bit, 28.63636 MIPS)
• Sub-CPU: Hitachi SH-1 @ 16 MHz (32-bit, 16 MIPS)
• Communication Board controllers:
  • Data Link controller: Fujitsu MB89374 Data Link Controller (8-Bit)
  • DMA controller: Fujitsu MB89237A DMAC (8-Bit)

Sound

• Sound CPU: Toshiba TMP68HC000N @ 16 MHz (16/32-bit, 2.8 MIPS)
• Sound processors: 2× Yamaha YMF292 (SCSP)
  • 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
  • Audio channels: 64 (2× 32)
  • Sound formats: PCM, FM, MIDI, LFO
  • PCM sampling: 8/16‑bit audio depth, 44.1 kHz sampling sate (CD quality)

Graphics

• GPU: Sega 837-9621 Video Board @ 50 MHz
  • FPGA: Hitachi HG62S0791R17F, Hitachi HG51B152FD, 2× Hitachi HG62G019R16F
  • Bus width: 160-bit (2× 80-bit)
  • Graphical capabilities: Scrolling, DMA
  • Sprite/Texture capabilities: Sprite/Texture compression, RLE compression, zooming, rotation, blitter, sprite/texture cache, digitized sprites
• 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: 32,768 colors (15-bit) to 16,777,216 colors (24/32-bit)
• Pixel fillrate: 100 million pixels/sec (2× 50 million pixels/sec)
• Sprite/Texture fillrate: 100 million texels/sec (2× 50 million texels/sec)
  • Maximum texels per frame: 1,753,074 (2× 876,537)
  • Maximum texels per scanline: 7826 (2× 3913)

Memory

• Memory: Up to 94.3 MB (6276 KB main, 85.125 MB video, 3 MB sound)
• System RAM: 8452 KB (8.254 MB)
  • Main RAM: 2180 KB (2 MB SDRAM, 128 KB SRAM, 4 KB FRAM)
  • VRAM: 5.125 MB (2.25 MB FPRAM, 2 MB DRAM, 896 KB SRAM)
  • Sound RAM: 1 MB (DRAM)
• System ROM: 1 MB (EPROM)
• Game ROM: Up to 85 MB (3 MB main ROM, 80 MB VROM, 2 MB sound ROM)
  • Main ROM bandwidth: 115 MB/sec (32-bit, 28.63636 MHz)
  • Video ROM (VROM) bandwidth: 650 MB/sec (160-bit, 32.5 MHz)

Softography

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

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