
DTK COMPUTER, INC.

GRAFIKA 4V2

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         SIS
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI/Award/DTK
Dimensions       260mm x 220mm
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

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battery type select external            JP12          pins 1 & 2
                                                              closed

      Battery type select internal            JP12          pins 2 & 3
                                                              closed

     CPU type select PGA                     JP16            Closed

      CPU type select PQFP                    JP16             Open

     A20 chip supported                      JP17          pins 1 & 2
                                                              closed

      8042 chip supported                     JP17          pins 2 & 3
                                                              closed

     Monitor type select monochrome          JP18            Closed

      Monitor type select color               JP18             Open

              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) 1M x 9         NONE

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

      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) 4M x 9         NONE

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

      18MB        (4) 512K x 9    (4) 4M x 9

      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 (U14)        TAG (U15)

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

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

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

                        CACHE JUMPER CONFIGURATION

    Size      JP1      JP2      JP3      JP4      JP5      JP6      JP7

    64KB     1 & 2    1 & 2    1 & 2    1 & 2    2 & 3     Open     1 & 2

   128KB     2 & 3    1 & 2    2 & 3    1 & 2    1 & 2    1 & 2     2 & 3

   256KB     2 & 3    2 & 3    2 & 3    2 & 3    2 & 3    2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

        Type                JP13              JP14              JP15

       80486SX              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 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

                        VL 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

