DTK COMPUTER, INC.

GRAFIKA 3B/KEEN-2531

Processor         80386SX
Processor Speed   25MHz
Chip Set          Unidentified
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache             None
BIOS              DTK
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card (PEI-307)
NPU Options       80387SX/3167

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Power LED & keylock         J1        Turbo switch               J4

  Speaker                     J2        Reset switch               J5

  Turbo LED                   J3        32-bit system memory       SL1
                                        card

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

  »   Factory configured - do not           SW1/7               Off
      alter

  »   Page interleave mode enabled          SW1/8               On

      Page mode enabled                     SW1/8               Off

  »   NPU disabled                           W1              pins 2 & 3
                                                              closed

      NPU enabled                            W1              pins 1 & 2
                                                              closed

      Monitor type select                    W2              pins 1 & 2
      monochrome                                              closed

      Monitor type select color              W2              pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9      NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9      NONE           NONE

     3MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9      NONE

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

   4MB (B)      (4) 1M x 9        NONE           NONE           NONE

     5MB        (4) 1M x 9     (4) 256K x 9      NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9   (4) 1M x 9        NONE

     7MB        (4) 256K x 9   (4) 256K x 9   (4) 1M x 9    (4) 256K x 9

     8MB        (4) 1M x 9     (4) 1M x 9        NONE           NONE

     9MB        (4) 1M x 9     (4) 1M x 9     (4) 256K x 9      NONE

     10MB       (4) 1M x 9     (4) 1M x 9     (4) 256K x 9  (4) 256K x 9

     12MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9        NONE

     13MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9    (4) 256K x 9

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

  Note: Banks 2 & 3 are located on the external memory card.

              DRAM SWITCH CONFIGURATION

   Size      SW1/1      SW1/2      SW1/3      SW1/4

   Size       Off         On        On         On

    1MB        On        Off        On         On

    2MB       Off        Off        Off        Off

    3MB       Off         On        Off        On

  4MB (A)      On         On        On         Off

  4MB (B)     Off        Off        Off        Off

    5MB       Off         On        Off        On

    6MB        On        Off        Off        On

    7MB       Off        Off        Off        On

    8MB        On         On        On         Off

    9MB       Off         On        On         Off

   10MB        On        Off        On         Off

   12MB        On         On        Off        Off

   13MB       Off         On        Off        Off

   16MB        On         On        On         On

                       DRAM WAIT STATE CONFIGURATION

  Write wait state   Read wait state         SW1/5             SW1/6

  »        1                2                 On                Off

  »        1                3                 Off               On

  »        2                3                 On                On

              CPU SPEED CONFIGURATION

          Speed                      J4

         12.5MHz              pins 1 & 2 closed

  Controlled by keyboard      pins 2 & 3 closed

          25MHz                     Open

[Image]

                         DRAM JUMPER CONFIGURATION

   Size      W1       W2        W3        W4       W5       W6       W7

   1MB      N/A      N/A       Open       N/A     N/A      N/A      N/A

   2MB      N/A      N/A       Open       N/A     N/A      N/A      N/A

   3MB     2 & 3     N/A      Closed     2 & 3    N/A     2 & 3     N/A

  4MB (A)  2 & 3    2 & 3      Open      2 & 3   2 & 3    2 & 3    2 & 3

  4MB (B)   N/A      N/A      Closed      N/A     N/A      N/A      N/A

   5MB      N/A      N/A       Open       N/A     N/A      N/A      N/A

   6MB     2 & 3     N/A      Closed     2 & 3    N/A     2 & 3     N/A

   7MB     2 & 3    2 & 3     Closed     2 & 3   2 & 3    2 & 3    2 & 3

   8MB      N/A      N/A       Open       N/A     N/A      N/A      N/A

   9MB     2 & 3     N/A      Closed     2 & 3    N/A     2 & 3     N/A

   10MB    2 & 3    2 & 3     Closed     2 & 3   2 & 3    2 & 3    2 & 3

   12MB    1 & 2     N/A      Closed     1 & 2    N/A     1 & 2     N/A

   13MB    1 & 2    2 & 3     Closed     1 & 2   2 & 3    1 & 2    2 & 3

   16MB    1 & 2    1 & 2     Closed     1 & 2   1 & 2    1 & 2    1 & 2

  Note: Pins designated should be in the closed position. Banks 0 & 1 are
  located on the mainboard.