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About bitSync

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About bitSync
Columbia, MD, USA


Subject System d8b: A circa 1999 purpose-built CPU/PSU controller for the Mackie Digital 8 Bus (d8b) digital audio mixer (d8b Database). The CPU/PSU chassis houses both a microprocessor-based contoller system and a number of power supply components that supply various DC voltages to a remotely located audio mixer control surface. Comms between the control surface and the CPU/PSU are by way of a parallel data cable. DC is supplied to the mixer control surface from the CPU/PSU chassis by way of a separate multiconductor cable. CPU/PSU features -

  • Itox CB50-BX motherboard 100 MHz FSB (link)
  • Intel 440BX AGPset chipset
  • Award BIOS v4.51PC - Windows (R) 95/98 Plug and Play Compatible
  • Celeron CPU Socket 370 at 300A MHz
  • 256 MB PC-100 SDRAM (upgraded from as-built 32 MB PC-100 SDRAM)
  • ATI Rage 128 MB AGP video adapter
  • Ethernet card - generic
  • MIDI card - Winman Midiman 1x1 ISA
  • 4 GB Compact Flash in IDE-to-Compact Flash adapter boot drive (upgraded from as-built IDE Maxtor 20 GB HDD)
  • 1.44 MB Floppy Drive
  • 1 AGP slot, 3 PCI slots, 1 16-bit ISA slot, 1 shared ISA/PCI slot
  • PSU - Sparkle SPI-250G 250 watt AT with front panel AC switching (link)
  • OS - custom realtime OS wrapped around a Win98 kernel (i.e., Windows is not accessible)


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PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch 03-20-2014
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