COMPUTREND SYSTEMS, INC.

CONTAQ-486

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33/50MHz
Chip Set          CONTAQ
Max. Onboard DRAM 32MB
Cache             64/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose              Location       Purpose                Location

  Keylock            J3 pins 1 & 2    Turbo switch          J3 pins 15 -
                                                                17

  Power LED          J3 pins 3 - 5    Reset switch          J3 19 & 20

  Speaker            J3 pins 7 - 10   Auxiliary keyboard        J4

  Turbo LED           J3 pins 12 &    External battery          JP2
                          13

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

              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

            CACHE CONFIGURATION

     Size          Bank 0          TAG

     64KB        (8) 8K x 8    (1) 8K x 8

     256KB       (8) 32K x 8   (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

   Size                                  JP8

   64KB         pins 1A & 2A closed, pins 3A & 4A closed, pins 1C & 2C
                           closed, and pins 3C & 4C closed.

   256KB        pins 1B & 2B closed, pins 3B & 4B closed, pins 1D & 2D
                           closed, and pins 3D & 4D closed.

                          CPU TYPE CONFIGURATION

   Type                            Jumper block JP7

  80486DX       pins 4A & 4B closed, pins 4C & 4D closed, pins 1A & 1B
                           closed, and pins 1C & 1D closed.

  80487SX       pins 4A & 4B closed, pins 4C & 4D closed, pins 2A & 2B
                           closed, and pins 2C & 2D closed.

  80486SX       pins 1B & 2B closed, pins 3B & 4B closed, pins 1D & 2D
                           closed, and pins 3D & 4D closed.

                         CPU SPEED CONFIGURATION

  CPU Speed      OSC1         JP3         JP5          JP6         JP9

    16MHz       32MHz        2 & 3        Open         Open       1 & 2

    20MHz       40MHz        1 & 2        Open         Open       1 & 2

    25MHz       25MHz        1 & 2       Closed        Open       2 & 3

    33MHz       33MHz        1 & 2        Open        Closed      2 & 3

    50MHz       50MHz        1 & 2       Closed       Closed      2 & 3

  Note: Pins designated should be in the closed position.