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       # LAVA COMPUTER MFG, INC.
       
          LAVA DSERIAL-DB9
       
          Card Type          Serial                                      
          Chipset Controller 16450/16550 UART                            
          I/O Options        Serial port (2)                             
          Maximum Dram       N/A                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |    Purpose    |   Location   |    Purpose    |  Location   |
          |---------------+--------------+---------------+-------------|
          | Serial port 1 |     CN1      | Serial port 2 |     CN2     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 1 CONFIGURATION                 |
          |------------------------------------------------------------|
          |       COM        |       JP1/A        |       JP1/B        |
          |------------------+--------------------+--------------------|
          |       COM1       | Pins 1 & 2 closed  |      All open      |
          |------------------+--------------------+--------------------|
          |       COM2       | Pins 2 & 3 closed  |      All open      |
          |------------------+--------------------+--------------------|
          |       COM3       |      All open      | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |       COM4       |      All open      | Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 2 CONFIGURATION                 |
          |------------------------------------------------------------|
          |      COM       |        JP2/A        |        JP2/B        |
          |----------------+---------------------+---------------------|
          |      COM1      |  Pins 1 & 2 closed  |      All open       |
          |----------------+---------------------+---------------------|
          |      COM2      |  Pins 2 & 3 closed  |      All open       |
          |----------------+---------------------+---------------------|
          |      COM3      |      All open       |  Pins 1 & 2 closed  |
          |----------------+---------------------+---------------------|
          |      COM4      |      All open       |  Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL PORT 1 INTERRUPT SELECT               |
          |------------------------------------------------------------|
          |  IRQ  |     JP3     |    JP4     |    JP5     |    JP6     |
          |-------+-------------+------------+------------+------------|
          | IRQ13 | Pins 1 & 2  |  All open  |  All open  |  All open  |
          |       |   closed    |            |            |            |
          |-------+-------------+------------+------------+------------|
          | IRQ12 |  All open   | Pins 1 & 2 |  All open  |  All open  |
          |       |             |   closed   |            |            |
          |-------+-------------+------------+------------+------------|
          | IRQ11 |  All open   |  All open  | Pins 1 & 2 |  All open  |
          |       |             |            |   closed   |            |
          |-------+-------------+------------+------------+------------|
          | IRQ10 |  All open   |  All open  |  All open  | Pins 1 & 2 |
          |       |             |            |            |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL PORT 1 INTERRUPT SELECT               |
          |------------------------------------------------------------|
          | IRQ  |     JP7      |    JP8     |    JP9     |    JP10    |
          |------+--------------+------------+------------+------------|
          | IRQ5 |  Pins 1 & 2  |  All open  |  All open  |  All open  |
          |      |    closed    |            |            |            |
          |------+--------------+------------+------------+------------|
          | IRQ2 |   All open   | Pins 1 & 2 |  All open  |  All open  |
          |      |              |   closed   |            |            |
          |------+--------------+------------+------------+------------|
          | IRQ3 |   All open   |  All open  | Pins 1 & 2 |  All open  |
          |      |              |            |   closed   |            |
          |------+--------------+------------+------------+------------|
          | IRQ4 |   All open   |  All open  |  All open  | Pins 1 & 2 |
          |      |              |            |            |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL PORT 2 INTERRUPT SELECT               |
          |------------------------------------------------------------|
          |  IRQ  |     JP3     |    JP4     |    JP5     |    JP6     |
          |-------+-------------+------------+------------+------------|
          | IRQ13 | Pins 2 & 3  |  All open  |  All open  |  All open  |
          |       |   closed    |            |            |            |
          |-------+-------------+------------+------------+------------|
          | IRQ12 |  All open   | Pins 2 & 3 |  All open  |  All open  |
          |       |             |   closed   |            |            |
          |-------+-------------+------------+------------+------------|
          | IRQ11 |  All open   |  All open  | Pins 2 & 3 |  All open  |
          |       |             |            |   closed   |            |
          |-------+-------------+------------+------------+------------|
          | IRQ10 |  All open   |  All open  |  All open  | Pins 2 & 3 |
          |       |             |            |            |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL PORT 2 INTERRUPT SELECT               |
          |------------------------------------------------------------|
          | IRQ  |     JP7      |    JP8     |    JP9     |    JP10    |
          |------+--------------+------------+------------+------------|
          | IRQ5 |  Pins 2 & 3  |  All open  |  All open  |  All open  |
          |      |    closed    |            |            |            |
          |------+--------------+------------+------------+------------|
          | IRQ2 |   All open   | Pins 2 & 3 |  All open  |  All open  |
          |      |              |   closed   |            |            |
          |------+--------------+------------+------------+------------|
          | IRQ3 |   All open   |  All open  | Pins 2 & 3 |  All open  |
          |      |              |            |   closed   |            |
          |------+--------------+------------+------------+------------|
          | IRQ4 |   All open   |  All open  |  All open  | Pins 2 & 3 |
          |      |              |            |            |   closed   |
          +------------------------------------------------------------+