MPU-401 - Design

Design

Released around 1984, the original MPU-401 was an external breakout box providing MIDI IN/MIDI OUT/MIDI THRU/TAPE IN/TAPE OUT/MIDI SYNC connectors, for use with a separately-sold interface card/cartridge ("MPU-401 interface kit") inserted into a computer system. For this setup, the following "interface kits" were made:

  • MIF-APL: For the Apple II.
  • MIF-C64: For the Commodore 64.
  • MIF-FM7: For the Fujitsu FM7.
  • MIF-IPC: For the IBM PC/IBM XT/IBM AT.
  • MIF-MSX: For the MSX.
  • MIF-PC8: For the NEC PC-88.
  • MIF-PC98: For the NEC PC-98.
  • MIF-X1: For the Sharp X1.

The MPU-401N is an external interface, specifically designed for use with the NEC PC-98 series notebook computers. This breakout-box unit features a special COMPUTER IN port for direct connection to the computer's 110-pin expansion bus. METRONOME OUT connector was added. Released in Japan only.

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