NORTHGATE COMPUTER SYSTEMS, INC.

SLIMLINE ZXP

Processor        80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed  16/20/25/33/50 (Internal)/66 (Internal)MHz
Chip Set         OPTI
Max. onboard DRAM128MB
Cache            None
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      Floppy drive interface, IDE interface, parallel port,

                 riser card, serial ports (2), VGA port
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel port               CN1      Turbo LED                   P1

  Serial port (COM1)          CN2      Power LED & keylock         P2

  Serial port (COM2)          CN3      Speaker                     P3

  VGA port                    CN4      IDE interface LED           P4

  IDE interface               CN5      Reset switch                P5

  Floppy drive interface      CN6      Riser Card                  S1

                        USER CONFIGURABLE SETTINGS

               Function                  Jumper/Switch        Position

  »   Onboard video disabled                   J5              Closed

      Onboard video enabled                    J5               Open

  »   Monitor type select color               J11              Closed

      Monitor type select monochrome          J11               Open

  »   Parallel port select                    J12              Closed
      uni-directional (printer)

      Parallel port select                    J12               Open
      bi-directional

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 16M x 9    (4) 256K x 9

      68MB        (4) 16M x 9     (4) 1M x 9

      80MB        (4) 16M x 9     (4) 4M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

             VRAM CONFIGURATION

     Size          Bank 0        Bank 1

     512KB       (8) 8K x 8    Banks 0 & 1

    1024KB       (4) 32K x 8     Bank 0

  VRAM JUMPER CONFIGURATION

   Size       J6       J7

  512KB       On       Off

  1024KB     Off       On

                          CPU SPEED CONFIGURATION

      Speed              J8                 J9                 J10

      16MHz           pins 2 & 3        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

      20MHz           pins 1 & 2        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

      25MHz           pins 2 & 3        pins 2 & 3      pins 1 & 2 closed
                       closed             closed

      33MHz           pins 1 & 2        pins 2 & 3      pins 1 & 2 closed
                       closed             closed

     50i MHz          pins 2 & 3        pins 2 & 3      pins 1 & 2 closed
                       closed             closed

     66i MHz          pins 1 & 2        pins 2 & 3      pins 1 & 2 closed
                       closed             closed

                          CPU TYPE CONFIGURATION

     Speed           J1             J2            J3              J4

    80486SX         Open           Open          Open            Open

    80487SX        Closed       pins 1 & 2     pins 1 & 2     pins 2 & 3
                                  closed        closed          closed

    80486DX        Closed       pins 1 & 2     pins 1 & 2     pins 1 & 2
                                  closed        closed          closed

    ODP486SX       Closed       pins 1 & 2     pins 1 & 2     pins 2 & 3
                                  closed        closed          closed

    80486DX2       Closed       pins 1 & 2     pins 1 & 2     pins 1 & 2
                                  closed        closed          closed