DTK COMPUTER, INC.

PTM-1230C

Processor            80286
Processor Speed      12MHz
Chip Set             VLSI/VTI
Max. Onboard DRAM    1MB
Cache                None
BIOS                 DTK
Dimensions           341.6mm x 204.2mm
I/O Options          Parallel port, serial ports (2)
NPU Options          80287

[Image]

                                CONNECTIONS

       Purpose            Location           Purpose           Location

  Power LED & keylock        J1        External battery          J12

  Reset switch               J2        Serial port (COM2)        CN1

  Speaker                    J3        Serial port (COM1)        CN2

  Turbo LED                  J4        Parallel port             CN3

  Turbo switch               J5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   DRAM speed select 0 wait states          J6             Closed

      DRAM speed select 1 wait state           J6              Open

  »   Factory configured - do not alter        J7             Unknown

  »   Factory configured - do not alter        J10              N/A

  »   Monitor type select color                J11            Closed

      Monitor type select monochrome           J11             Open

  »   BIOS type select 27256                   J22            Closed

      BIOS type select 27128                   J22             Open

  »   CMOS memory normal operation             JP1            Closed

      CMOS memory clear                        JP1             Open

           DRAM CONFIGURATION

     Size        Bank 0        Bank 1

    512KB       (18) 41256      NONE

    640KB       (18) 41256   (18) 4164

     1MB        (18) 41256   (18) 41256

  DRAM JUMPER CONFIGURATION

   Size       J8       J9

  512KB     Closed   Closed

  640KB     Closed    Open

   1MB       Open    Closed

                     PARALLEL PORT (CN3) CONFIGURATION

         Port                J13              J14              J19

         LPT1              Closed           Closed          pins 1 & 2
                                                              closed

         LPT2               Open             Open           pins 2 & 3
                                                              closed

       Disabled             Open            Closed             N/A

       Disabled            Closed            Open              N/A

                         SERIAL PORT CONFIGURATION

  Serial Port 1     J15       J16      Serial Port 2     J17       J18
     (CN2)                                 (CN1)

      COM1        Closed     Closed        COM2        Closed     Closed

      COM3         Open       Open         COM4         Open       Open

    Disabled      Closed      Open       Disabled      Closed      Open

    Disabled       Open      Closed      Disabled       Open      Closed