
DTK COMPUTER, INC.

PEM-2500

Processor         80386DX
Processor Speed   25MHz
Chip Set          VLSI
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache             64/256KB
BIOS              AMI/Award/DTK/Phoenix
Dimensions        351mm x 306mm
I/O Options       32-bit external memory card slot
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Power LED & keylock        J1        Turbo LED                   J4

  Reset switch               J2        Turbo switch                J5

  Speaker                    J3        32-bit external            S15
                                       memory card

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     Expansion bus (8-bit) speed            W11             pins 1 & 2
      select 7 wait states                                     closed

      Expansion bus (8-bit) speed            W11             pins 2 & 3
      select 5 wait states                                     closed

     Expansion bus (16-bit) speed           W12             pins 1 & 2
      select 3 wait states                                     closed

      Expansion bus (16-bit) speed           W12             pins 2 & 3
      select 1 wait states                                     closed

     DMA & I/O speed select                 W13             pins 1 & 2
      6/12MHz respectively                                     closed

      DMA & I/O speed select 3/6MHz          W13             pins 2 & 3
      respectively                                             closed

     NPU disabled                           W14               Closed

      NPU enabled                            W14                Open

     Monitor type select                   SW1/6               Off
      monochrome

      Monitor type select color             SW1/6                On

                            DRAM CONFIGURATION

  Size    Bank 0       P-0       Bank 1       P-1       Bank 2    Bank 3

  1MB       (8)        (4)        NONE       NONE        NONE      NONE
           44256      41256

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

  2MB       (8)        (4)         (8)        (4)        NONE      NONE
           44256      41256      44256       41256

  2MB       (8)        (4)        NONE       NONE        NONE       (4)
           44256      41256                                        256K x
                                                                     9

  2MB      NONE       NONE         (8)        (4)        NONE       (4)
                                 44256       41256                 256K x
                                                                     9

  4MB       (8)        (4)         (8)        (4)        (12)      NONE
          411000     411000      411000     411000      411000

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

  5MB       (8)        (4)        NONE       NONE        NONE      (4) 1M
           44256      41256                                         x 9

  8MB       (8)        (4)         (8)        (4)        (12)      (4) 1M
          411000     411000      411000     411000      411000      x 9

                         DRAM JUMPER CONFIGURATION

  Size      W1      W2      W3      W4      W5      W6      W7       W8

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

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

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

   4MB     2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   1 & 2   1 & 2

   4MB     1 & 2   1 & 2   1 & 2   1 & 2   1 & 2   1 & 2   1 & 2   1 & 2

   5MB     2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   1 & 2

   8MB     2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   2 & 3   1 & 2   1 & 2

  Note:Pins designated should be in the closed position.

                DRAM SWITCH CONFIGURATION

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

   1MB        On       On        On        On       On

   1MB        On       On        On        On       On

   2MB        On       On        On        On       On

   4MB        On       On        Off       On       Off

   4MB        On       On        Off       On       Off

   5MB       Off       On        On        Off      On

   8MB       Off       On        Off       Off      Off

            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                  W9                  W10

        64KB           pins 1 & 2 closed   pins 1 & 2 closed

        256KB          pins 2 & 3 closed   pins 2 & 3 closed

