NORTHGATE COMPUTER SYSTEMS, INC.

MB108

  Data bus:                  16-bit, ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      Two IDE (AT) Interface drives

  Floppy drives supported:   Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                                CONNECTIONS

                   Function                              Location

  34-pin control cable connector - (reserved                J1
  for future use)

  34-pin control cable connector - floppy                   J2
  drive

  4-pin connector - Drive active LED                        J3

  40-pin IDE(AT) Interface connector                        J6

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

  »   Hard drive Interrupt Request           W21              closed
      IRQ14 enabled

      Hard drive Interrupt Request           W21               open
      IRQ14 disabled

                          HARD DRIVE PORT ADDRESS

             Function                 SW1/jumper 1        SW1/jumper 2

  »   Hard drive port address is         closed               open
      1F0-1F7h

      Hard drive port address is          open               closed
      170-177h

                         FLOPPY DRIVE PORT ADDRESS

             Function                 SW1/jumper 1        SW1/jumper 2

  »   Floppy drive port address          closed               open
      is 3F0-3F7h

      Floppy drive port address           open               closed
      is 370-377h

                       MISCELLANEOUS TECHNICAL NOTES

   Jumpers J4 (Drive-type 300Kb/sec) is factory configured to pins 2 & 3
                           closed - do not alter

   J5 (Pump/Precomp) is factory configured to pins 1 & 2 closed - do not
                                  alter.