
DTK COMPUTER, INC.

PTM-1261C/1661C

Processor              80286
Processor Speed        12/16MHz
Chip Set               C & T
Max. Onboard DRAM      5MB
Cache                  None
BIOS                   DTK
Dimensions             333mm x 222mm
I/O Options            Floppy drive interface, game port, IDE interface,
                       parallel port, PS/2 mouse interface, serial ports
                       (2)
NPU Options            80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       External battery            J9

  Turbo LED                   J2       Serial port 2               J10

  Reset switch                J3       Serial port 1               J11

  Turbo switch                J4       Parallel port               J12

  IDE interface               J5       PS/2 mouse interface        J13

  Floppy drive interface      J6       IDE interface LED           W12

  Game port                   J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     IDE type select new standard             W11           pins 2 & 3
                                                              closed

      IDE type select original standard        W11           pins 1 & 2
      (i.e., CP-342)                                          closed

     Floppy drive interface (J6)              W14            Closed
      enabled

      Floppy drive interface (J6)              W14             Open
      disabled

     IDE interface enabled                    W21            Closed

      IDE interface disabled                   W21             Open

     Game port enabled                        W22            Closed

      Game port disabled                       W22             Open

     Monitor type select monochrome           W23             Open

      Monitor type select color                W23            Closed

     Battery select internal                  W24           pins 2 & 3
                                                              closed

      Battery select external                  W24           pins 1 & 2
                                                              closed

     Power good signal detect from            W25           pins 2 & 3
      power supply                                            closed

      Power good signal detect from            W25           pins 1 & 2
      board                                                   closed

                            DRAM CONFIGURATION

   Size     Bank 0       P-0      Bank 1       P-1      Bank 2    Bank 3

  512KB       (4)        (2)       NONE       NONE       NONE      NONE
             44256      41256

  640KB       (4)        (2)      (2) 64K     NONE       NONE      NONE
             44256      41256       x 9

   1MB        (4)        (2)        (4)        (2)       NONE      NONE
             44256      41256      44256      41256

  1.5MB       (4)        (2)        (4)        (2)        (2)      NONE
             44256      41256      44256      41256     256K x
                                                          9

   2MB        (4)        (2)        (4)        (2)        (2)       (2)
             44256      41256      44256      41256     256K x     256K x
                                                          9          9

   2MB       NONE       NONE       NONE       NONE      (2) 1M     NONE
                                                         x 9

   3MB        (4)        (2)        (4)        (2)      (2) 1M     NONE
             44256      41256      44256      41256      x 9

   4MB       NONE       NONE       NONE       NONE      (2) 1M     (2) 1M
                                                         x 9        x 9

   5MB        (4)        (2)        (4)        (2)      (2) 1M     (2) 1M
             44256      41256      44256      41256      x 9        x 9

                  DRAM JUMPER CONFIGURATION

  Size      W1       W2       W3       W4       W5      W6

  512KB    1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

  640KB    1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   1MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

  1.5MB    2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   2MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   2MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   3MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   4MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   5MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

  Notes:Pins designated should be in the closed position.

                        PARALLEL PORT CONFIGURATION

      Setting              W13               W19               W20

        LPT1            pins 1 & 2          Closed            Closed
                          closed

        LPT2            pins 2 & 3           Open              Open
                          closed

      Disabled             N/A               Open             Closed

      Disabled             N/A              Closed             Open

                        SERIAL PORT 1 CONFIGURATION

      Setting              W13               W15               W16

        COM1            pins 1 & 2          Closed            Closed
                          closed

        COM3            pins 2 & 3           Open              Open
                          closed

      Disabled             N/A               Open             Closed

      Disabled             N/A              Closed             Open

                        SERIAL PORT 2 CONFIGURATION

      Setting              W13               W17               W18

        COM2            pins 1 & 2          Closed            Closed
                          closed

        COM4            pins 2 & 3           Open              Open
                          closed

      Disabled             N/A               Open             Closed

      Disabled             N/A              Closed             Open

