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

   PTI-227B

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 16-bit, ISA                            |
   |-------------------+----------------------------------------|
   | Size:             | Half-length, half-height card          |
   |-------------------+----------------------------------------|
   | Hard drive        | Two IDE (AT) Interface drives          |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/C-D/20407-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                    |  Location  |
   |-----------------------------------------------+------------|
   | 34-pin control cable connector - floppy drive |     J1     |
   |-----------------------------------------------+------------|
   | 40-pin IDE(AT) Interface connector            |     J2     |
   |-----------------------------------------------+------------|
   | 16-pin game port - internal                   |     J3     |
   |-----------------------------------------------+------------|
   | 10-pin serial port (COM1/3/4) - external      |     J4     |
   |-----------------------------------------------+------------|
   | 10-pin serial port (COM2/3/4) - internal      |     J6     |
   |-----------------------------------------------+------------|
   | 25-pin parallel port (LPT1/2/3) - external    |     J7     |
   |-----------------------------------------------+------------|
   | 2-pin connector - Drive active LED            |    JP1     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            |   Location   |  Setting   |
   |--------------------------------+--------------+------------|
   |>> | Parallel Port is           |     JP3      |   closed   |
   |   | uni-directional            |              |            |
   |---+----------------------------+--------------+------------|
   |   | Parallel Port is           |     JP3      |    open    |
   |   | bi-directional             |              |            |
   |---+----------------------------+--------------+------------|
   |>> | Hard drive port address is | JP4/jumper 1 | pins 1 & 2 |
   |   | 3F6-3F7, 1F0-1F7h          |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Hard drive port address is | JP4/jumper 1 | pins 2 & 3 |
   |   | 376-377, 170-177h          |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Hard drive enabled         | JP4/jumper 2 | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Hard drive disabled        | JP4/jumper 2 | pins 1 & 2 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive port address  | JP4/jumper 3 | pins 1 & 2 |
   |   | is 3F0-3F7h                |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive port address  | JP4/jumper 3 | pins 2 & 3 |
   |   | is 370-377h                |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive enabled       | JP4/jumper 4 | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive disabled      | JP4/jumper 4 | pins 1 & 2 |
   |   |                            |              |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 (J4) CONFIGURATION              |
   |------------------------------------------------------------|
   |       COM        |    JP2/jumper 1    |    JP2/jumper 2    |
   |------------------+--------------------+--------------------|
   |>> |      1       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      3       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      4       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 (J6) CONFIGURATION              |
   |------------------------------------------------------------|
   |       COM        |    JP2/jumper 3    |    JP2/jumper 4    |
   |------------------+--------------------+--------------------|
   |>> |      2       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      3       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      4       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT (J7) CONFIGURATION              |
   |------------------------------------------------------------|
   |       LPT        |    JP2/jumper 5    |    JP2/jumper 6    |
   |------------------+--------------------+--------------------|
   |>> |      1       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      2       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |      3       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            SERIAL PORT 1 (J4) INTERRUPT REQUEST            |
   |------------------------------------------------------------|
   |    IRQ     |  J5/jumper 1  |  J5/jumper 2  |  J5/jumper 3  |
   |------------+---------------+---------------+---------------|
   |   |   3    |     open      |    closed     |     open      |
   |---+--------+---------------+---------------+---------------|
   |>> |   4    |    closed     |     open      |     open      |
   |---+--------+---------------+---------------+---------------|
   |   |   5    |     open      |     open      |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            SERIAL PORT 2 (J6) INTERRUPT REQUEST            |
   |------------------------------------------------------------|
   |    IRQ     |  J5/jumper 4  |  J5/jumper 5  |  J5/jumper 6  |
   |------------+---------------+---------------+---------------|
   |>> |   3    |    closed     |     open      |     open      |
   |---+--------+---------------+---------------+---------------|
   |   |   4    |     open      |    closed     |     open      |
   |---+--------+---------------+---------------+---------------|
   |   |   5    |     open      |     open      |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            PARALLEL PORT (J7) INTERRUPT REQUEST            |
   |------------------------------------------------------------|
   |       IRQ        |    J5/jumper 7     |    J5/jumper 8     |
   |------------------+--------------------+--------------------|
   |    |      5      |        open        |       closed       |
   |----+-------------+--------------------+--------------------|
   |>>  |      7      |       closed       |        open        |
   +------------------------------------------------------------+