
DTK COMPUTER, INC.

PKM-0038S (VER. 1.00)

Processor   CX486M6/80486SX/CX486S2/SL80486SX/CX486M7/80486DX/SL80486DX/
            80486DX2/SL80486DX2/P24D/Pentium Overdrive
Processor   20/25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set    Unidentified
Max.        128MB
Onboard
DRAM
Cache       128/256/512KB
BIOS        Award
Dimensions  250mm x 220mm
I/O Options 32-bit VESA local bus slots (3), green PC connector
NPU Options None

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                  Location

  Turbo switch         J3 pins 3 &   Power LED & keylock         J7
                           4

  Turbo LED                J4        Green PC connector         JP26

  Speaker                  J5        32-bit VESA local        SL1 - SL3
                                     bus slots

  Reset switch             J6

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

     Turbo switch enabled                       J3          pins 3 & 4
                                                               closed

      Turbo switch disabled                      J3          pins 4 & 5
                                                               closed

     CMOS memory normal operation              JP16         pins 2 & 3
                                                               closed

      CMOS memory clear                         JP16         pins 1 & 2
                                                               closed

     Monitor type select                       JP17            Open
      monochrome/EGA/VGA

      Monitor type select CGA                   JP17           Closed

     CPU type select any CPU installed         JP18            Open

      CPU type select CX486S2 only              JP18           Closed

     Factory configured - do not alter         JP19         pins 1 & 2
                                                               closed

     CPU clock delay select CLKIN delays       JP20         pins 2 & 3
      CPUCLK                                                   closed

      CPU clock delay select CLKIN =            JP20         pins 1 & 2
      CPUCLK                                                   closed

     Factory configured - do not alter         JP23         pins 1 & 2
                                                               closed

     Factory configured - do not alter         JP27            Open

     Factory configured - do not alter         JP32         pins 1 & 2
                                                               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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 256K x 9   (4) 16M x 9

      68MB        (4) 1M x 9     (4) 16M x 9

      80MB        (4) 4M x 9     (4) 16M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     128KB        (4) 32K x 8        NONE         (1) 8K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

     512KB       (4) 128K x 8        NONE        (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

      Size           JP1            JP2            JP3           JP4

     128KB          1 & 2          1 & 2        1 & 2, 3 &      1 & 2
                                                    4

     256KB          2 & 3          2 & 3        2 & 3, 4 &      1 & 2
                                                    5

     512KB          1 & 2          2 & 3        1 & 2, 3 &      2 & 3
                                                    4

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

      Type           JP8        JP9         JP10       JP11        JP12

     CX486M6        2 & 3      Closed       2 & 3      Open      2 & 3, 4
                                                                   & 5

     80486SX        2 & 3       Open        2 & 3      Open        Open

    SL80486SX       2 & 3       Open        2 & 3      Open       3 & 4

     CX486M7        1 & 2      Closed       2 & 3      2 & 3      2 & 3

     80486DX        1 & 2      Closed       2 & 3      2 & 3       Open

    SL80486DX       1 & 2      Closed       2 & 3      2 & 3      3 & 4

    80486DX2        1 & 2      Closed       2 & 3      2 & 3       Open

   SL80486DX2       1 & 2      Closed       2 & 3      2 & 3      3 & 4

      P24D          1 & 2      Closed       1 & 2      2 & 3     1 & 2, 3
                                                                   & 4

      P24T          1 & 2      Closed       1 & 2      1 & 2      3 & 4

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

      Type           JP13          JP14           JP15           JP21

    CX486M6          Open        1 & 2, 3 &       2 & 3         1 & 2
                                     4

    80486SX          Open          Open           Open          2 & 3

   SL80486SX        1 & 2          2 & 3          4 & 5         2 & 3

    CX486M7          Open        1 & 2, 3 &       2 & 3         1 & 2
                                     4

    80486DX          Open          Open           Open          2 & 3

   SL80486DX        1 & 2          2 & 3          4 & 5         2 & 3

    80486DX2         Open          Open           Open          2 & 3

   SL80486DX2       1 & 2          2 & 3          4 & 5         2 & 3

      P24D          2 & 3          2 & 3          4 & 5         2 & 3

      P24T           Open          2 & 3          1 & 2         1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type        JP22        JP24        JP25        JP30         JP31

   CX486M6       2 & 3       2 & 3      2 & 3        Open         Open

   80486SX       1 & 2       Open        Open        Open         Open

  SL80486SX      1 & 2       Open        Open        Open         Open

   CX486M7       2 & 3       2 & 3      2 & 3        Open         Open

   80486DX       1 & 2       Open        Open        Open         Open

  SL80486DX      1 & 2       Open        Open        Open         Open

   80486DX2      1 & 2       Open        Open        Open         Open

  SL80486DX2     1 & 2       Open        Open        Open         Open

     P24D        1 & 2       Open       1 & 2       Closed       Closed

     P24T        1 & 2       1 & 2      1 & 2        Open         Open

  Note: Pins designated should be in the closed position.

         CPU SPEED CONFIGURATION

  Speed      JP5        JP6       JP7

  20MHz      Open      Open      Open

  25MHz      Open     Closed     Open

  33MHz     Closed    Closed    Closed

  40MHz      Open     Closed    Closed

  50iMHz     Open     Closed     Open

  50MHz     Closed     Open      Open

  66iMHz    Closed    Closed    Closed

                      VL BUS WAIT STATE CONFIGURATION

              Wait states                             JP28

              0 wait states                    pins 1 & 2 closed

               1 wait state                    pins 2 & 3 closed

        VL BUS SPEED CONFIGURATION

      CPU speed              JP29

      <= 33MHz        pins 1 & 2 closed

       > 33MHz        pins 2 & 3 closed

