UNIDENTIFIED
============

   IOAT 41/42

   Card Type          Multi I/O card                              
   Chipset/Controller N/A                                         
   I/O Options        Parallel port, serial ports (2)             
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/U-Z/50245-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN1    | Serial port 2    |   CN3    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   CN2    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT INTERRUPT SELECTION               |
   |------------------------------------------------------------|
   |   Port 1   | Port 2 (CN3) |      JP2/A      |    JP2/B     |
   |   (CN1)    |              |                 |              |
   |------------+--------------+-----------------+--------------|
   |>>  | IRQ4  |     IRQ3     |  Pins 10 & 11   | Pins 11 & 12 |
   |    |       |              |     closed      |    closed    |
   |----+-------+--------------+-----------------+--------------|
   |    | IRQ3  |     IRQ4     |  Pins 11 & 12   | Pins 10 & 11 |
   |    |       |              |     closed      |    closed    |
   |----+-------+--------------+-----------------+--------------|
   |    | IRQ5  |     IRQ7     |   Pins 8 & 9    |  Pins 7 & 8  |
   |    |       |              |     closed      |    closed    |
   |----+-------+--------------+-----------------+--------------|
   |    | IRQ7  |     IRQ5     |   Pins 7 & 8    |  Pins 8 & 9  |
   |    |       |              |     closed      |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |            LPT             |              JP1              |
   |----------------------------+-------------------------------|
   |>>  |           1           |       Pins 1 & 2 closed       |
   |----+-----------------------+-------------------------------|
   |    |           2           |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |            IRQ             |              JP1              |
   |----------------------------+-------------------------------|
   |>>    |          7          |       Pins 4 & 5 closed       |
   |------+---------------------+-------------------------------|
   |      |          5          |       Pins 5 & 6 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   | Port 1 (CN1) | Port 2 (CN3) |      JP2/A      |   JP2/B    |
   |--------------+--------------+-----------------+------------|
   |>> |   COM1   |     COM2     |   Pins 1 & 2    | Pins 2 & 3 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM1   |     COM3     |   Pins 1 & 2    | Pins 4 & 5 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM1   |     COM4     |   Pins 1 & 2    | Pins 5 & 6 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM2   |     COM1     |   Pins 2 & 3    | Pins 1 & 2 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM2   |     COM3     |   Pins 2 & 3    | Pins 4 & 5 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM2   |     COM4     |   Pins 2 & 3    | Pins 5 & 6 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM3   |     COM1     |   Pins 4 & 5    | Pins 1 & 2 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM3   |     COM2     |   Pins 4 & 5    | Pins 2 & 3 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM3   |     COM4     |   Pins 4 & 5    | Pins 5 & 6 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM4   |     COM1     |   Pins 5 & 6    | Pins 1 & 2 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM4   |     COM2     |   Pins 5 & 6    | Pins 2 & 3 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM4   |     COM3     |   Pins 5 & 6    | Pins 4 & 5 |
   |   |          |              |     closed      |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   |   COM1   |   Disabled   |   Pins 1 & 2    |    Open    |
   |   |          |              |     closed      |            |
   |---+----------+--------------+-----------------+------------|
   |   |   COM2   |   Disabled   |   Pins 2 & 3    |    Open    |
   |   |          |              |     closed      |            |
   |---+----------+--------------+-----------------+------------|
   |   |   COM3   |   Disabled   |   Pins 4 & 5    |    Open    |
   |   |          |              |     closed      |            |
   |---+----------+--------------+-----------------+------------|
   |   |   COM4   |   Disabled   |   Pins 5 & 6    |    Open    |
   |   |          |              |     closed      |            |
   |---+----------+--------------+-----------------+------------|
   |   | Disabled |     COM1     |      Open       | Pins 1 & 2 |
   |   |          |              |                 |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   | Disabled |     COM2     |      Open       | Pins 2 & 3 |
   |   |          |              |                 |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   | Disabled |     COM3     |      Open       | Pins 4 & 5 |
   |   |          |              |                 |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   | Disabled |     COM4     |      Open       | Pins 5 & 6 |
   |   |          |              |                 |   closed   |
   |---+----------+--------------+-----------------+------------|
   |   | Disabled |   Disabled   |      Open       |    Open    |
   +------------------------------------------------------------+