DTK COMPUTERS, INC.
===================

   PTM-1260B

   Processor    80286                                             
   Processor    12MHz                                             
   Speed        
   Chip Set     VLSI                                              
   Max. Onboard 1MB                                               
   DRAM         
   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                                             

<gopher://bitreich.org/I/th99/m/C-D/31841-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Hard drive 1 data |   CN1    | Parallel port    |   CN9    |
   | cable connector   |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Hard drive 1 data |   CN2    | Power LED &      |   JP1    |
   | cable connector   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | 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    |   JP12   |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | 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 closed |    Open    |    Open    |
   |--------------+-------------------+------------+------------|
   |   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        |
   +------------------------------------------------------------+