B & B ELECTRONICS
=================

   3PXOCC2A, 3PXOCC2B

   Card Type           Serial card                                
   Chip Set            Unidentified                               
   Data Bus            16-bit ISA                                 

<gopher://bitreich.org/I/th99/i/A-B/53917-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | 9-pin serial port 1  |  J1   | 9-pin serial port 2 |  J2   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |         Function         | Label |        Position         |
   |--------------------------+-------+-------------------------|
   | IRQ share select normal  |  JP4  |    Pins 1 & 3, 2 & 4    |
   |                          |       |         closed          |
   |--------------------------+-------+-------------------------|
   | IRQ share select sharing |  JP4  |    Pins 3 & 5, 4 & 6    |
   |                          |       |         closed          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |        SERIAL PORT SELECTION (RS-232 &AMP; RS-422)         |
   |------------------------------------------------------------|
   |  Setting   |          JP1C          |         JP2C         |
   |------------+------------------------+----------------------|
   |   RS-232   |  1 & 2, 4 & 5, 7 & 8,  | 1 & 2, 4 & 5, 7 & 8, |
   |            |        10 & 11         |       10 & 11        |
   |------------+------------------------+----------------------|
   | RS-422/485 |  2 & 3, 5 & 6, 8 & 9,  | 2 & 3, 5 & 6, 8 & 9, |
   |            |        11 & 12         |       11 & 12        |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |        SERIAL PORT SELECTION (RS-422 &AMP; RS-485)         |
   |------------------------------------------------------------|
   | Setting |    JP1A    |    JP1B    |    JP2A    |   JP2B    |
   |---------+------------+------------+------------+-----------|
   | RS-422  | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 &  |
   |         |   closed   |   closed   |   closed   | 2 closed  |
   |---------+------------+------------+------------+-----------|
   | RS-485  | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 &  |
   |         |   closed   |   closed   |   closed   | 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      RS-485 SELECTION                      |
   |------------------------------------------------------------|
   |      Setting       |        JP5        |        JP6        |
   |--------------------+-------------------+-------------------|
   |   Send Data (SD)   | Pins 1 & 2 closed | Pins 1 & 2 closed |
   |--------------------+-------------------+-------------------|
   |  Request to Send   | Pins 2 & 3 closed | Pins 2 & 3 closed |
   |       (RTS)        |                   |                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   | JP1C, JP1A, JP1B & JP5 control serial port 1 and JP2C,     |
   | JP2A, JP2B & JP6 control serial port 2.                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |Address | SW1/1 | SW1/2 | SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
   |--------+-------+-------+-------+------+------+------+------|
   |  3F8   |  Off  |  Off  |  Off  | Off  | Off  | Off  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  2F8   |  Off  |  Off  |  Off  | Off  | Off  |  On  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  3E8   |  Off  |  On   |  Off  | Off  | Off  | Off  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  2E8   |  Off  |  On   |  Off  | Off  | Off  |  On  | Off  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |Address | SW2/1 | SW2/2 | SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |
   |--------+-------+-------+-------+------+------+------+------|
   |  3F8   |  Off  |  Off  |  Off  | Off  | Off  | Off  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  2F8   |  Off  |  Off  |  Off  | Off  | Off  |  On  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  3E8   |  Off  |  On   |  Off  | Off  | Off  | Off  | Off  |
   |--------+-------+-------+-------+------+------+------+------|
   |  2E8   |  Off  |  On   |  Off  | Off  | Off  |  On  | Off  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    INTERRUPT SELECTION                     |
   |------------------------------------------------------------|
   |  IRQ   |       Port 1 (J1)       |       Port 2 (J2)       |
   |--------+-------------------------+-------------------------|
   |  IRQ2  | JP3/pins 31 & 32 closed | JP3/pins 32 & 33 closed |
   |--------+-------------------------+-------------------------|
   |  IRQ3  | JP3/pins 28 & 29 closed | JP3/pins 29 & 30 closed |
   |--------+-------------------------+-------------------------|
   |  IRQ4  | JP3/pins 25 & 26 closed | JP3/pins 26 & 27 closed |
   |--------+-------------------------+-------------------------|
   |  IRQ5  | JP3/pins 22 & 23 closed | JP3/pins 23 & 24 closed |
   |--------+-------------------------+-------------------------|
   |  IRQ6  | JP3/pins 19 & 20 closed | JP3/pins 20 & 21 closed |
   |--------+-------------------------+-------------------------|
   |  IRQ7  | JP3/pins 16 & 17 closed | JP3/pins 17 & 18 closed |
   |--------+-------------------------+-------------------------|
   | IRQ10  | JP3/pins 13 & 14 closed | JP3/pins 14 & 15 closed |
   |--------+-------------------------+-------------------------|
   | IRQ11  | JP3/pins 10 & 11 closed | JP3/pins 11 & 12 closed |
   |--------+-------------------------+-------------------------|
   | IRQ12  |  JP3/pins 7 & 8 closed  |  JP3/pins 8 & 9 closed  |
   |--------+-------------------------+-------------------------|
   | IRQ14  |  JP3/pins 4 & 5 closed  |  JP3/pins 5 & 6 closed  |
   |--------+-------------------------+-------------------------|
   | IRQ15  |  JP3/pins 1 & 2 closed  |  JP3/pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DATA RATE SELECTION                     |
   |------------------------------------------------------------|
   |     Setting      |        JP7         |        JP8         |
   |------------------+--------------------+--------------------|
   |       High       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |       Low        | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+