DTK COMPUTER, INC.
==================

   PTI-255H

   Card Type            Hard drive controller card                
   Hard Drives          Four EIDE drives                          
   supported            
   Floppy drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   supported            
   Data Bus             32-bit VESA Local Bus                     
   Card Size            Full-length, half-height card             

<gopher://bitreich.org/I/th99/c/C-D/21633-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 4-pin connector - |    J1    | 16-pin game port |    J5    |
   | drive active LED  |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 40-pin primary    |    J2    | 10-pin serial    |    J6    |
   | IDE(AT) connector |          | port 2 -         |          |
   |                   |          | internal         |          |
   |-------------------+----------+------------------+----------|
   | 40-pin secondary  |    J3    | 10-pin serial    |    J7    |
   | IDE(AT) connector |          | port 2 -         |          |
   |                   |          | internal         |          |
   |-------------------+----------+------------------+----------|
   | 34-pin cable      |    J4    | 25-pin parallel  |    J8    |
   | connector -       |          | port - external  |          |
   | floppy drive      |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | IDE(0) interface enabled        |  W8   |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | IDE(0) interface disabled       |  W8   |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | IDE(1) interface enabled        |  W9   |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | IDE(1) interface disabled       |  W9   |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Floppy drive interface enabled  |  W22  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Floppy drive interface disabled |  W22  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Game port enable                |  W24  |     open     |
   |---+---------------------------------+-------+--------------|
   |   | Game port disable               |  W24  |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Serial port 1 enabled           |  W27  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Serial port 1 disabled          |  W27  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Parallel port enabled           |  W28  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Parallel port disabled          |  W28  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Serial port 2 enabled           |  W30  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Serial port 2 disabled          |  W30  |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |        Setting         |     Label      |     Position     |
   |------------------------+----------------+------------------|
   |>> |    LPT1 (378h)     |      W25       |       Open       |
   |---+--------------------+----------------+------------------|
   |   |    LPT2 (278h)     |      W25       |      Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |        Setting         |     Label      |     Position     |
   |------------------------+----------------+------------------|
   |>> |    COM1 (3F8h)     |      W26       |       Open       |
   |---+--------------------+----------------+------------------|
   |   |    COM3 (3E8h)     |      W26       |      Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |        Setting         |     Label      |     Position     |
   |------------------------+----------------+------------------|
   |>> |    COM2 (2F8h)     |      W29       |       Open       |
   |---+--------------------+----------------+------------------|
   |   |    COM4 (2E8h)     |      W29       |      Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ      |     W36      |     W37      |     W38      |
   |---------------+--------------+--------------+--------------|
   |   |   IRQ3    |     Open     |    Closed    |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |>> |   IRQ4    |    Closed    |     Open     |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |   |   IRQ5    |     Open     |     Open     |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |      IRQ      |     W39      |     W40      |     W41      |
   |---------------+--------------+--------------+--------------|
   |>> |   IRQ3    |    Closed    |     Open     |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |   |   IRQ4    |     Open     |    Closed    |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |   |   IRQ5    |     Open     |     Open     |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       W42        |       W43       |
   |-----------------------+------------------+-----------------|
   |>>   |      IRQ7       |      Closed      |      Open       |
   |-----+-----------------+------------------+-----------------|
   |     |      IRQ5       |       Open       |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT MODE SELECTION                |
   |------------------------------------------------------------|
   |           Setting            |    Label    |   Position    |
   |------------------------------+-------------+---------------|
   |>> |     Uni-directional      |     W23     |    Closed     |
   |---+--------------------------+-------------+---------------|
   |   | Bi-Directional (EPP/ECP) |     W23     |     Open      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     I/O CHANNEL READY                      |
   |------------------------------------------------------------|
   | I/O Channel ready  |      Label       |      Position      |
   |--------------------+------------------+--------------------|
   |        ISA         |        W6        | Pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |        759A        |        W6        | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      SPEED SELECTION                       |
   |------------------------------------------------------------|
   |        Speed        |      Label      |      Position      |
   |---------------------+-----------------+--------------------|
   |   |      33MHz      |       W10       | Pins 1 & 2 closed  |
   |---+-----------------+-----------------+--------------------|
   |>> |      50MHz      |       W10       | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    IDE TIMING SELECTION                    |
   |------------------------------------------------------------|
   |     IDE Timing     |        W11        |        W12        |
   |--------------------+-------------------+-------------------|
   |   | 240ns (mode 3) | Pins 1 & 2 closed | Pins 1 & 2 closed |
   |---+----------------+-------------------+-------------------|
   |   | 400ns (mode 2) | Pins 1 & 2 closed | Pins 2 & 3 closed |
   |---+----------------+-------------------+-------------------|
   |   | 500ns (mode 1) | Pins 2 & 3 closed | Pins 1 & 2 closed |
   |---+----------------+-------------------+-------------------|
   |>> | 600ns (mode 0) | Pins 2 & 3 closed | Pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            FLOPPY DISK DRIVE ADDRESS SELECTION             |
   |------------------------------------------------------------|
   |       Address        |      Label      |     Position      |
   |----------------------+-----------------+-------------------|
   |>>   |      3F0h      |       W21       |       Open        |
   |-----+----------------+-----------------+-------------------|
   |     |      370h      |       W21       |      Closed       |
   +------------------------------------------------------------+