Sega H1 Board

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Sega H1 Board
Manufacturer: Sega
Release Date RRP Code

The Sega H1 Board is an arcade system board made by Sega. Hardware-wise, it crosses the bridge between the three-dimensional sprite/texture manipulation of the Sega System 32 and the 3D polygons of the Sega Model 1 and Model 2. The H1 Board uses hardware similar to the Sega Saturn, ST-V and Model 2. Only two games are known to use the H1 Board. [1]

Specifications

The technical specifications for the Sega H1 Board: [1]

Sound

  • Sound CPU: Toshiba TMP68HC000N @ 16 MHz (16/32-bit, 2.8 MIPS)
  • Sound processors: 2× Yamaha YMF292 (SCSP) [3]
    • 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 [4]
    • 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)
  • Sound output: 4 speakers (surround sound)

Graphics

  • GPU: Sega 837-9621 Video Board @ 50 MHz
    • Hitachi FPGA ASIC: HG62S0791R17F, HG51B152FD, 2× HG62G019R16F
    • Sega Custom chipset: 315‑5694, 315‑5697, 315‑5698, 4× 315‑5648, 2× 315‑5695, 2× 315‑5696
    • Bus width: 160‑bit (2× 80‑bit)
    • Memory access: VRAM (Video RAM), VROM (Video ROM)
    • Graphical capabilities: Scrolling, DMA
    • Sprite/Texture capabilities: Sprite/Texture compression, RLE compression,[5] blitter, sprite/texture cache, sprite zooming & rotation, sprite flipping, 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
    • Main ROM: 3 MB (EPROM)
    • VROM: 80 MB (MROM)
    • Sound ROM: 2 MB

Bandwidth

  • System RAM bandwidth: 574.4 MB/sec
    • Main RAM: 114.54544 MB/sec (32-bit, 28.63636 MHz) [6]
    • VRAM: 444.444444 MB/sec (160-bit, 22.222222 MHz) [7]
    • Sound RAM: 15.384615 MB/sec (16-bit, 7.692308 MHz) [8]
  • System ROM bandwidth: 57.3 MB/sec (16-bit, 28.63636 MHz) [9]
  • Game ROM bandwidth: 809.7 MB/sec [10]
    • Main ROM: 114.54544 MB/sec (32-bit, 28.63636 MHz) [11]
    • VROM: 650 MB/sec (160-bit, 32.5 MHz)
    • Sound ROM: 45.158 MB/sec (16-bit, 22.579 MHz)

Softography


Sega arcade boards
Originating in arcades









Console-based hardware








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PC-based hardware








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