
DTK COMPUTER, INC.

PKM-0037S

Processor       CX486M6/80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set        Unidentified
Max. Onboard    32MB
DRAM
Cache           64/128/256KB
BIOS            Unidentified
Dimensions      254mm x 218mm
I/O Options     32-bit VESA local bus slots (2)
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Power LED & keylock        CN1       Reset switch               CN5

  Speaker                    CN2       External battery           CN6

  Turbo switch               CN3       32-bit VESA local bus   SL1 - SL2
                                       slots

  Turbo LED                  CN4

  Note: The location of CN1 - CN6 are unidentified.

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     A20 Source type select chip             JP17          pins 1 & 2
      supported                                               closed

      A20 Source type select 8042             JP17          pins 2 & 3
      supported                                               closed

     Monitor type select color               JP18             Open

      Monitor type select monochrome          JP18            Closed

              DRAM CONFIGURATION

  Size         Bank 0             Bank 1

   1MB      (4) 256K x 9           NONE

   2MB      (4) 256K x 9       (4) 256K x 9

   2MB      (4) 512K x 9           NONE

   4MB      (4) 512K x 9       (4) 512K x 9

   4MB          (4) 1M x 9         NONE

   6MB      (4) 512K x 9           (4) 1M x 9

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

   8MB          (4) 2M x 9         NONE

  16MB          (4) 2M x 9         (4) 2M x 9

  16MB          (4) 4M x 9         NONE

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

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

                            CACHE CONFIGURATION

     Size        Bank 0       Bank 1         TAG 1             TAG 2

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

    128KB       (4) 32K x    (4) 32K x     (1) 8K x 8       (1) 8K x 8
                   8            8

    256KB       (4) 32K x    (4) 32K x   (1) 16K x 8 or    (1) 16K x 8 or
                   8            8         (1) 32K x 8       (1) 32K x 8

  Note: The location of TAG 2 is unidentified.

                        CACHE JUMPER CONFIGURATION

    Size           JP1            JP2            JP3             JP4

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

    128KB       pins 2 & 3     pins 1 & 2     pins 2 & 3      pins 1 & 2
                 closed          closed         closed         closed

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

                    CACHE JUMPER CONFIGURATION (CONT)

      Size               JP5               JP6                 JP7

      64KB            pins 2 & 3           Open         pins 1 & 2 closed
                       closed

      128KB           pins 1 & 2        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

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

                          CPU TYPE CONFIGURATION

        Type                JP13              JP14              JP15

       CX486M6              Open           pins 2 & 3           Open
                                             closed

    80486SX(PQFP)           Open           pins 2 & 3           Open
                                             closed

    80486SX(PGA)            Open           pins 2 & 3           Open
                                             closed

       80487SX           pins 2 & 3        pins 1 & 2          Closed
                           closed            closed

       80486DX           pins 1 & 2        pins 1 & 2          Closed
                           closed            closed

      80486DX2           pins 1 & 2        pins 1 & 2          Closed
                           closed            closed

  Pentium Overdrive      pins 2 & 3        pins 1 & 2          Closed
                           closed            closed

                    CPU TYPE CONFIGURATION

        Type                 JP16                 JP27

       CX486M6              Closed         pins 2 & 3 closed

    80486SX(PQFP)            Open          pins 1 & 2 closed

    80486SX(PGA)            Closed         pins 2 & 3 closed

       80487SX              Closed         pins 1 & 2 closed

       80486DX              Closed         pins 1 & 2 closed

      80486DX2              Closed         pins 1 & 2 closed

  Pentium Overdrive         Closed         pins 1 & 2 closed

         CPU SPEED CONFIGURATION

  Speed      JP20      JP21      JP22

  20MHz      Open      Open      Open

  25MHz      Open      Open     Closed

  33MHz     Closed    Closed    Closed

  40MHz      Open     Closed    Closed

  50iMHz     Open      Open     Closed

  50MHz     Closed     Open      Open

  66iMHz    Closed    Closed    Closed

                VESA WAIT STATE CONFIGURATION

     Wait states             JP9                  JP11

    0 wait states      pins 1 & 2 closed   pins 1 & 2 closed

    1 wait state       pins 2 & 3 closed   pins 2 & 3 closed

                   BUS SPEED CONFIGURATION

      CPU speed              JP8                  JP10

      <= 33MHz         pins 1 & 2 closed   pins 1 & 2 closed

       > 33MHz         pins 2 & 3 closed   pins 2 & 3 closed

