
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.

