BOCA RESEARCH, INC.
===================

   IOAT45

   Card Type          Multi I/O card                              
   Chipset/Controller GM82C455                                    
   I/O Options        Parallel ports (2), serial ports (2)        
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/A-B/50393-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Parallel port 2   |    J1    | Serial port 1    |    J4    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J3    | Parallel port 1  |    J7    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   | Port 1 (J4)  |  J2/A  |  J2/E  |  Port 2  |  J2/B  | J2/F  |
   |              |        |        |   (J3)   |        |       |
   |--------------+--------+--------+----------+--------+-------|
   |>> |   COM1   | Pins 1 | Pins 1 |   COM2   | Pins 1 | Pins  |
   |   |          |  & 2   |  & 2   |          |  & 2   | 1 & 2 |
   |---+----------+--------+--------+----------+--------+-------|
   |   |   COM3   | Pins 1 | Pins 2 |   COM4   | Pins 1 | Pins  |
   |   |          |  & 2   |  & 3   |          |  & 2   | 2 & 3 |
   |---+----------+--------+--------+----------+--------+-------|
   |   | Disabled | Pins 2 |  N/A   | Disabled | Pins 2 |  N/A  |
   |   |          |  & 3   |        |          |  & 3   |       |
   |------------------------------------------------------------|
   | Note:All Pins designated should be placed in the closed    |
   | position.                                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            PRIMARY SERIAL PORT INTERRUPT SELECT            |
   |------------------------------------------------------------|
   |   IRQ    |    J2/I    |    J2/J    |   J2/K    |   J2/L    |
   |----------+------------+------------+-----------+-----------|
   |>> | IRQ4 |    N/A     | Pins 1 & 2 |    N/A    |    N/A    |
   |   |      |            |   closed   |           |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ3 | Pins 1 & 2 |    N/A     |    N/A    |    N/A    |
   |   |      |   closed   |            |           |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ5 |    N/A     |    N/A     | Pins 1 &  |    N/A    |
   |   |      |            |            | 2 closed  |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ9 |    N/A     |    N/A     |    N/A    | Pins 1 &  |
   |   |      |            |            |           | 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           SECONDARY SERIAL PORT INTERRUPT SELECT           |
   |------------------------------------------------------------|
   |   IRQ    |    J2/I    |    J2/J    |   J2/K    |   J2/L    |
   |----------+------------+------------+-----------+-----------|
   |>> | IRQ3 | Pins 2 & 3 |    N/A     |    N/A    |    N/A    |
   |   |      |   closed   |            |           |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ4 |    N/A     | Pins 2 & 3 |    N/A    |    N/A    |
   |   |      |            |   closed   |           |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ5 |    N/A     |    N/A     | Pins 2 &  |    N/A    |
   |   |      |            |            | 3 closed  |           |
   |---+------+------------+------------+-----------+-----------|
   |   | IRQ9 |    N/A     |    N/A     |    N/A    | Pins 2 &  |
   |   |      |            |            |           | 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   | Port 1 (J7)  |       J2/C       | Port 2 (J1) |    J2/D    |
   |--------------+------------------+-------------+------------|
   |>> | Enabled  |    Pins 1 & 2    |   Enabled   | Pins 1 & 2 |
   |   |          |      closed      |             |   closed   |
   |---+----------+------------------+-------------+------------|
   |   | Disabled |    Pins 2 & 3    |  Disabled   | Pins 2 & 3 |
   |   |          |      closed      |             |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PARALLEL PORT INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |   Port 1   |      J2/G      | Port 2 (J1) |      J2/H      |
   |    (J7)    |                |             |                |
   |------------+----------------+-------------+----------------|
   |>>  | IRQ7  |   Pins 2 & 3   |    IRQ5     |   Pins 1 & 2   |
   |    |       |     closed     |             |     closed     |
   |----+-------+----------------+-------------+----------------|
   |    | IRQ5  |   Pins 1 & 2   |    IRQ7     |   Pins 2 & 3   |
   |    |       |     closed     |             |     closed     |
   +------------------------------------------------------------+