
DTK COMPUTERS, INC.

PTM-1260B

Processor              80286
Processor Speed        12MHz
Chip Set               VLSI
Max. Onboard DRAM      1MB
Cache                  None
BIOS                   DTK
Dimensions             330mm x 218mm
I/O Options            Floppy drive interface, hard drive interface,
                       parallel port, serial ports (2), video port
NPU Options            80287

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  Hard drive 1 data         CN1        Parallel port             CN9
  cable connector

  Hard drive 1 data         CN2        Power LED & keylock       JP1
  cable connector

  Hard drive                CN3        Speaker                   JP3
  interface

  Floppy drive              CN4        Turbo LED                 JP4
  interface

  Serial port 2             CN5        Turbo switch              JP5

  Video port                CN7        IDE interface LED         JP12

  Serial port 1             CN8        External battery          JP20

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             JP2              N/A
      alter

     Zero wait state enabled                 JP8             Closed

      One wait state enabled                  JP8              Open

     Primary hard drive address is           JP13          pins 2 & 3
      1F0h - 1F7h                                             closed

      Secondary hard drive address is         JP13          pins 1 & 2
      170h - 177h                                             closed

     Primary floppy drive address is         JP13          pins 5 & 6
      3F0h - 3F7h                                             closed

      Secondary floppy drive address          JP13          pins 4 & 5
      is 370h - 37Fh                                          closed

     BIOS type select 32KB                   JP14             Open

      BIOS type select 64KB                   JP14            Closed

     Factory configured - do not             JP15             N/A
      alter

     Monochrome display primary              JP22             Open

      CGA display primary                     JP22            Closed

                        FLOPPY DRIVE CONFIGURATION

         Drive                JP16            JP17              JP18

         Enabled            Closed          Closed            Closed

          Disabled            Open            Open              Open

       PRIMARY SERIAL PORT CONFIGURATION

  Port 1 (CN8)       JP24            JP26

      COM1          Closed          Closed

      COM3           Open            Open

    Disabled        Closed           Open

    Disabled         Open           Closed

      SECONDARY SERIAL PORT CONFIGURATION

  Port 2 (CN5)       JP25            JP27

      COM2          Closed          Closed

      COM4           Open            Open

    Disabled         Open           Closed

    Disabled        Closed           Open

                        PARALLEL PORT CONFIGURATION

        LPT                JP19              JP23              JP28

        LPT1            pins 1 & 2          Closed            Closed
                          closed

        LPT2            pins 2 & 3           Open              Open
                          closed

      Disabled             N/A               Open             Closed

      Disabled             N/A              Closed             Open

                       DRAM CONFIGURATION

    Size        Bank 0      Parity 0     Bank 1      Parity 1

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

    640KB     (4) 44256    (2) 41256    (4) 4464     (2) 4164

     1MB      (4) 44256    (2) 41256    (4) 44256    (2) 41256

  Note:The exact locations of bank 0 and bank 1 are unknown.

  DRAM JUMPER CONFIGURATION

   Size      JP9      JP10

  512KB     Closed   Closed

  640KB      Open    Closed

   1MB       Open     Open

