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