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

   SNB-C042

   Data Bus             16-bit ISA                                
   Card Size            Half-height, half-length                  
   Hard Drives          Two IDE(AT) devices                       
   Supported            
   Floppy Drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   Supported            

<gopher://bitreich.org/I/th99/c/U-Z/21094-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function        | Label |      Function      | Label |
   |-----------------------+-------+--------------------+-------|
   | 25-pin parallel port  |  J1   | 40-pin IDE(AT)     |  J5   |
   | - external            |       | connector          |       |
   |-----------------------+-------+--------------------+-------|
   | 10-pin serial port 1  |  J2   | 2-pin drive active |  J6   |
   | - internal            |       | LED                |       |
   |-----------------------+-------+--------------------+-------|
   | 10-pin serial port 2  |  J3   | 16-pin game port   |  J7   |
   | - internal            |       |                    |       |
   |-----------------------+-------+--------------------+-------|
   | 34-pin cable          |  J4   |                    |       |
   | connector - floppy    |       |                    |       |
   | drive                 |       |                    |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                USER CONFIGURABLE SETTINGS                  |
   |------------------------------------------------------------|
   |               Setting               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Floppy drive interface enabled  | JP1/G |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Floppy drive interface disabled | JP1/G |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | IDE(AT) interface enabled       | JP1/H |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | IDE(AT) interface disabled      | JP1/H |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   SERIAL PORT 1 ADDRESS                    |
   |------------------------------------------------------------|
   |      Setting      |       JP1/A        |       JP1/B       |
   |-------------------+--------------------+-------------------|
   |>> | 3F8h (COM1:)  | Pins 1 & 2 closed  | Pins 2 & 3 closed |
   |---+---------------+--------------------+-------------------|
   |   | 3E8h (COM3:)  | Pins 2 & 3 closed  | Pins 1 & 2 closed |
   |---+---------------+--------------------+-------------------|
   |   |   Disabled    | Pins 2 & 3 closed  | Pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  SERIAL PORT 1 INTERRUPT                   |
   |------------------------------------------------------------|
   |    Setting     |    JP2/A     |    JP2/B     |    JP2/C    |
   |----------------+--------------+--------------+-------------|
   |   |    IRQ3    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |>> |    IRQ4    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   SERIAL PORT 2 ADDRESS                    |
   |------------------------------------------------------------|
   |      Setting      |       JP1/C        |       JP1/D       |
   |-------------------+--------------------+-------------------|
   |>> | 2F8h (COM2:)  | Pins 1 & 2 closed  | Pins 2 & 3 closed |
   |---+---------------+--------------------+-------------------|
   |   | 2E8h (COM4:)  | Pins 2 & 3 closed  | Pins 1 & 2 closed |
   |---+---------------+--------------------+-------------------|
   |   |   Disabled    | Pins 2 & 3 closed  | Pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  SERIAL PORT 2 INTERRUPT                   |
   |------------------------------------------------------------|
   |    Setting     |    JP2/D     |    JP2/E     |    JP2/F    |
   |----------------+--------------+--------------+-------------|
   |>> |    IRQ3    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ4    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    IRQ5    |     Open     |     Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   PARALLEL PORT ADDRESS                    |
   |------------------------------------------------------------|
   |     Setting      |       JP1/E        |       JP1/F        |
   |------------------+--------------------+--------------------|
   |>> |     378h     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |     278h     | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PARALLEL PORT INTERRUPT                   |
   |------------------------------------------------------------|
   |      Setting       |       JP2/G       |       JP2/H       |
   |--------------------+-------------------+-------------------|
   |        IRQ5        |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   |        IRQ7        |      Closed       |       Open        |
   +------------------------------------------------------------+