
DTK COMPUTER, INC.

PKM-2500 (VER. 1.20)

Processor         80486SX
Processor Speed   25MHz
Chip Set          VLSI
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache             64/256KB
BIOS              DTK/Phoenix
Dimensions        355mm x 305mm
I/O Options       32-bit external memory card (PEI-306)
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Chassis fan power          J1        Speaker                     J5

  Power LED & keylock        J2        Turbo switch                J6

  Turbo LED                  J3        32-bit external            SL1
                                       memory card

  Reset switch               J4

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

      BIOS type select 27256                 W3              pins 1 & 2
                                                              closed

      BIOS type select 27512                 W3              pins 2 & 3
                                                              closed

     Factory configured - do not            W6                 N/A
      alter

      Monitor type select color             SW1/4               On

      Monitor type select                   SW1/4               Off
      monochrome

                    CACHE CONFIGURATION

     Size          Bank 0         TAG 0          TAG 1

     64KB       (8) 16K x 4    (1) 16K x 1    (2) 16K x 4

     256KB      (8) 64K x 4    (1) 64K x 1    (2) 64K x 4

                  CACHE JUMPER CONFIGURATION

        Size                  W1                   W2

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

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

                                                                   [Image]

                            DRAM CONFIGURATION

    Size       Bank 0      Bank 1      Bank 0A      Bank 1A     Bank 2A

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

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

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

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

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

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

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

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

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

  10MB (A)    (4) 1M x     (4) 1M x    (4) 256K     (4) 256K      NONE
                 9            9          x 9          x 9

  10MB (B)    (4) 256K     (4) 256K    (4) 1M x     (4) 1M x      NONE
                x 9          x 9          9            9

    11MB      (4) 1M x     (4) 1M x    (4) 256K     (4) 256K   (4) 256K x
                 9            9          x 9          x 9          9

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

    14MB      (4) 256K     (4) 256K    (4) 1M x     (4) 1M x   (4) 1M x 9
                x 9          x 9          9            9

    16MB      (4) 1M x     (4) 1M x    (4) 1M x     (4) 1M x      NONE
                 9            9           9            9

  Note: Banks 0A, 1A, and 2A are located on the external memory card

                      DRAM JUMPER CONFIGURATION

    Size        W1          W2         W3          W4         W5

    1MB         N/A        N/A         N/A        2 & 3      2 & 3

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

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

  4MB (A)       N/A        N/A         N/A        1 & 2      1 & 2

  4MB (B)      2 & 3      2 & 3       2 & 3       2 & 3      2 & 3

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

    6MB        1 & 2      1 & 2       1 & 2       2 & 3      2 & 3

    8MB         N/A        N/A         N/A        1 & 2      1 & 2

    9MB        2 & 3      2 & 3       2 & 3       1 & 2      1 & 2

  10MB (A)     2 & 3      2 & 3       2 & 3       1 & 2      1 & 2

  10MB (B)     1 & 2      1 & 2       1 & 2       2 & 3      2 & 3

    11MB       2 & 3      2 & 3       2 & 3       1 & 2      1 & 2

    12MB       1 & 2      1 & 2       1 & 2       1 & 2      1 & 2

    14MB       1 & 2      1 & 2       1 & 2       2 & 3      2 & 3

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

  Note: W4, W5 are located on the mainboard.

       DRAM SWITCH CONFIGURATION (CONT)

    Size       SW1/1       SW1/2      SW1/3

    1MB         On          On          On

    2MB         On          On          On

    3MB         On          On          On

  4MB (A)       On          On         Off

  4MB (B)       On          On          On

    5MB         On          Off         On

    6MB         On          Off         On

    8MB         On          Off        Off

    9MB         Off         On         Off

  10MB (A)      Off         On         Off

  10MB (B)      Off         On          On

    11MB        Off         On         Off

    12MB        Off         On         Off

    14MB        Off         Off         On

    16MB        Off         Off        Off

  Note: SW1 is located on the mainboard.

                  DRAM SWITCH CONFIGURATION (CONT)

    Size       SW2/1      SW2/2       SW2/3       SW2/4      SW2/5

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

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

    3MB         On          On         Off         Off        On

  4MB (A)       N/A        N/A         N/A         N/A        N/A

  4MB (B)       On          On         Off         Off        On

    5MB         On          On         Off         Off        On

    6MB         On         Off         Off         Off        On

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

    9MB         On          On         On          Off        Off

  10MB (A)      On          On         On          Off        Off

  10MB (B)      On         Off         Off         Off        On

    11MB        On          On         On          Off        Off

    12MB        On         Off         On          Off        Off

    14MB        On         Off         Off         Off        On

    16MB        On         Off         On          Off        Off

  Note: SW2 is located on the memory card

                  DRAM SWITCH CONFIGURATION (CONT)

    Size       SW2/6      SW2/7       SW2/8       SW2/9     SW2/10

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

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

    3MB         Off        Off         On          On         N/A

  4MB (A)       N/A        N/A         N/A         N/A        N/A

  4MB (B)       Off        Off         On          On         N/A

    5MB         Off        Off         On          On         N/A

    6MB         Off        Off         On          On         N/A

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

    9MB         Off        Off         On          On         N/A

  10MB (A)      Off        Off         On          On         N/A

  10MB (B)      Off        Off         On          On         N/A

    11MB        Off        Off         On          On         N/A

    12MB        Off        Off         On          On         N/A

    14MB        Off        Off         On          On         N/A

    16MB        Off        Off         On          On         N/A

  Note: SW2 is located on the memory card.

