DTK COMPUTER, INC.

KEEN-4000, GRAFIKA 3E, PEM 4000

Processor         80386DX
Processor Speed   25/33MHz
Chip Set          VLSI
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Power LED & keylock        J1        Speaker                     J4

  Turbo LED                  J2        32-bit external             S1
                                       memory card

  Reset switch               J3

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Monitor type select color             SW1/6                On

      Monitor type select                   SW1/6               Off
      monochrome

  »   NPU disabled                           W1                Closed

      NPU enabled                            W1                 Open

  »   CPU speed select switchable            W6              Pins 2 & 3
      from keyboard                                            closed

      CPU speed select forced slow           W6              Pins 1 & 2
                                                               closed

      CPU speed select forced fast           W6                 Open

  »   BIOS type select 27256                 W7              Pins 1 & 2
                                                               closed

      BIOS type select 27512                 W7              Pins 2 & 3
                                                               closed

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

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

                   DRAM JUMPER/SWITCH CONFIGURATION

   Size    SW1/1    SW1/2    SW1/3   SW1/4    SW1/5     W2       W3

   1MB       On      On       On       On       On     2 & 3    2 & 3

   2MB       On      On       On       On       On     2 & 3    2 & 3

   4MB       On      On       Off      On      Off     1 & 2    1 & 2

   5MB      Off      On       Off     Off       On     2 & 3    1 & 2

   8MB      Off      On       Off     Off      Off     1 & 2    1 & 2

  Note:Pins designated should be in the closed position.

            CACHE CONFIGURATION

     Size          Bank 0          TAG

     64KB        (8) 16K x 4   (2) 16K x 4

     256KB       (8) 64K x 4   (2) 64K x 4

                  CACHE JUMPER CONFIGURATION

        Size                  W4                   W5

        64KB           Pins 1 & 2 closed   Pins 1 & 2 closed

        256KB          Pins 2 & 3 closed   Pins 2 & 3 closed