DTK COMPUTER, INC.

PLM-2531P/3331P/5031P

Processor        80486SX/80487SX/ODP80486SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         OPTI
Max. Onboard DRAM128MB
Cache            64/128/256KB
BIOS             AMI/DTK
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                J1       Speaker                     J4

  Turbo switch                J2       Power LED & keylock         J5

  Turbo LED                   J3       External battery            J12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Turbo switch enabled                     J2             Closed

      turbo switch disabled                    J2              Open

  »   Monitor type select monochrome          J11              Open

      Monitor type select color               J11             Closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

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

     64MB        (4) 16M x 9      NONE

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

                            CACHE CONFIGURATION

   Size     Bank 0   Bank 1      TAG       Dirty        TAG     TAG (U33)
                                (U30)      (U31)      (U32)

   64KB     (4) 8K   (4) 8K    (1) 8K x   (1) 8K x   (1) 8K x     NONE
             x 8      x 8         1          1          8

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

  256KB       (4)      (4)     (1) 8K x   (1) 8K x     NONE     (1) 32K x
             32K x    32K x       1          1                      8
              8        8

                        CACHE JUMPER CONFIGURATION

                Size                                 J10

                64KB                          pins 9 & 10 closed

               128KB                  pins 1 & 2, 5 & 6, 11 & 12 closed

               256KB                  pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9
                                                 & 10 closed

                        CPU TYPE CONFIGURATION

               Type                                J9

              80486SX                      pins 9 & 10 closed

              80487SX               pins 3 & 4, 5 & 6, 7 & 8 closed

            ODP80486SX              pins 3 & 4, 5 & 6, 7 & 8 closed

            80486DX/DX2             pins 1 & 2, 3 & 4, 5 & 6 closed

                          CPU SPEED CONFIGURATION

      Speed               J6                 J7                 J8

      25MHz            pins 2 & 3           Open              Closed
                        closed

      33MHz            pins 1 & 2          Closed              Open
                        closed

      40MHz            pins 2 & 3           Open              Closed
                        closed

      50iMHz           pins 2 & 3           Open              Closed
                        closed

      50MHz            pins 2 & 3           Open              Closed
                        closed

      66iMHz           pins 1 & 2          Closed              Open
                        closed