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

   I/O 450

   Card Type               Parallel/Serial card                   
   Chip Set                AT-type GM 82C 455                     
   Maximum Onboard Memory  None                                   
   I/O Options             Parallel port (2), serial port (2)     
   Data Bus                8-bit ISA                              
   Floppy drives supported None                                   

<gopher://bitreich.org/I/th99/i/A-B/52383-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | 26-pin Parallel port |  J1   | 9-pin serial port 1 |  J4   |
   | 2                    |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | 10-pin serial port 2 |  J3   | 25-pin parallel     |  J7   |
   |                      |       | port 1              |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            | Label |     Position      |
   |--------------------------------+-------+-------------------|
   |>> | Serial port 1 enabled      | J2/A  | Pins 2 & 3 closed |
   |---+----------------------------+-------+-------------------|
   |   | Serial port 1 disabled     | J2/A  | Pins 1 & 2 closed |
   |---+----------------------------+-------+-------------------|
   |>> | Serial port 2 enabled      | J2/B  | Pins 2 & 3 closed |
   |---+----------------------------+-------+-------------------|
   |   | Serial port 2 disabled     | J2/B  | Pins 1 & 2 closed |
   |---+----------------------------+-------+-------------------|
   |>> | Parallel port 1 enabled    | J2/C  | Pins 2 & 3 closed |
   |---+----------------------------+-------+-------------------|
   |   | Parallel port 1 disabled   | J2/C  | Pins 1 & 2 closed |
   |---+----------------------------+-------+-------------------|
   |>> | Parallel port 2 enabled    | J2/D  | Pins 2 & 3 closed |
   |---+----------------------------+-------+-------------------|
   |   | Parallel port 2 disabled   | J2/D  | Pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |           Setting           |             J2/E             |
   |-----------------------------+------------------------------|
   |>> |       COM1 (3F8h)       |      Pins 2 & 3 closed       |
   |---+-------------------------+------------------------------|
   |   |       COM3 (3E8h)       |      Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |           Setting           |             J2/F             |
   |-----------------------------+------------------------------|
   |>> |       COM2 (2F8h)       |      Pins 2 & 3 closed       |
   |---+-------------------------+------------------------------|
   |   |       COM4 (2E8h)       |      Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            PARALLEL PORT 1 INTERRUPT SELECTION             |
   |------------------------------------------------------------|
   |            IRQ             |             J2/G              |
   |----------------------------+-------------------------------|
   |       |         5          |       Pins 2 & 3 closed       |
   |-------+--------------------+-------------------------------|
   |>>     |         7          |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            PARALLEL PORT 2 INTERRUPT SELECTION             |
   |------------------------------------------------------------|
   |            IRQ             |             J2/H              |
   |----------------------------+-------------------------------|
   |>>     |         5          |       Pins 2 & 3 closed       |
   |-------+--------------------+-------------------------------|
   |       |         7          |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |  IRQ  |    J2/I     |    J2/J    |    J2/K    |    J2/L    |
   |-------+-------------+------------+------------+------------|
   |   | 3 | Pins 2 & 3  |    Open    |    Open    |    Open    |
   |   |   |   closed    |            |            |            |
   |---+---+-------------+------------+------------+------------|
   |>> | 4 |    Open     | Pins 2 & 3 |    Open    |    Open    |
   |   |   |             |   closed   |            |            |
   |---+---+-------------+------------+------------+------------|
   |   | 5 |    Open     |    Open    | Pins 2 & 3 |    Open    |
   |   |   |             |            |   closed   |            |
   |---+---+-------------+------------+------------+------------|
   |   | 9 |    Open     |    Open    |    Open    | Pins 2 & 3 |
   |   |   |             |            |            |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 2 INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |  IRQ  |   J2/I   |     J2/J      |    J2/K    |    J2/L    |
   |-------+----------+---------------+------------+------------|
   |>> | 3 | Pins 1 & |     Open      |    Open    |    Open    |
   |   |   | 2closed  |               |            |            |
   |---+---+----------+---------------+------------+------------|
   |   | 4 |   Open   |  Pins 1 & 2   |    Open    |    Open    |
   |   |   |          |    closed     |            |            |
   |---+---+----------+---------------+------------+------------|
   |   | 5 |   Open   |     Open      | Pins 1 & 2 |    Open    |
   |   |   |          |               |   closed   |            |
   |---+---+----------+---------------+------------+------------|
   |   | 9 |   Open   |     Open      |    Open    | Pins 1 & 2 |
   |   |   |          |               |            |   closed   |
   +------------------------------------------------------------+