TWINHEAD INTERNATIONAL CORPORATION

NETSTATION

Processor              80286/80386SX
Processor Speed        12/16/20MHz
Chip Set               C & T
Max. Onboard DRAM      5MB
Cache                  None
BIOS                   Unidentified
Dimensions             330mm x 218mm
I/O Options            Floppy drive interface, IDE interface, parallel
                       port, serial ports (2), VGA port, riser slot
NPU Options            80287/80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  VGA port                   CN1      IDE interface                CN5

  Parallel port              CN2      Floppy drive interface       CN6

  Serial port 1              CN3      External battery             J19

  Serial port 2              CN4      Riser slot                   SL1

  Note: Jumper J19 may not be present on all boards.

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

  »   Monitor type select color              J18             pins 1 & 2
                                                              closed

      Monitor type select                    J18             pins 2 & 3
      monochrome                                              closed

  »   On board video enabled                SW1/1               On

      On board video disabled               SW1/1               Off

  »   Monitor type select multi             SW1/2               On
      frequency monitor

      Monitor type select standard          SW1/2               Off
      monitor

  »   Monitor type select PS/2              SW1/3               On
      monitor

      Monitor type select AT                SW1/3               Off
      monitor

  »   Parallel port enabled                 SW1/4               On

      Parallel port disabled                SW1/4               Off

  »   Serial port 1 enabled                 SW1/5               On

      Serial port 1 disabled                SW1/5               Off

  »   Serial port 2 enabled                 SW1/6               On

      Serial port 2 disabled                SW1/6               Off

  »   Floppy drive interface                SW1/7               On
      enabled

      Floppy drive interface                SW1/7               Off
      disabled

  »   IDE interface enabled                 SW1/8               On

      IDE interface disabled                SW1/8               Off

                            DRAM CONFIGURATION

    Size      Bank 0A      Bank 0      Bank 1       Bank 2       Bank 3

    1MB         1MB         NONE        NONE         NONE         NONE

    3MB         1MB      (1) 256K x   (1) 256K x   (1) 256K x  (1) 256K x
                             9            9            9           9

    5MB         1MB      (1) 1M x 9   (1) 1M x 9   (1) 1M x 9  (1) 1M x 9

  Note: Bank 0A is factory installed and is not configurable.

                   CPU SPEED CONFIGURATION

        Speed          Oscillator speed           JP1

     80286-12MHz            32MHz          pins 1 & 2 closed

     80286-12MHz            24MHz          pins 2 & 3 closed

    80386SX-16MHz           32MHz          pins 1 & 2 closed

    80386SX-16MHz            N/A           pins 2 & 3 closed

    80386SX-20MHz           32MHz          pins 1 & 2 closed

    80386SX-20MHz           40MHz          pins 2 & 3 closed

                        VIDEO MEMORY CONFIGURATION

          Size                    Bank 0                   Bank 1

          256KB                  (8) 4164                   NONE

          512KB                  (8) 4164                 (8) 4164

            Note: Bank 0 is factory installed and is not configurable.
            This memory may not be present on all boards.