LAVA COMPUTER MFG, INC.
=======================

   LAVA 2SP-550

   Card Type          Multi I/O                                   
   Chipset Controller 16450/16550 UART                            
   I/O Options        Parallel port, Serial ports (2)             
   Maximum Dram       N/A                                         

<gopher://bitreich.org/I/th99/i/I-L/50641-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose     | Location |      Purpose       | Location |
   |-----------------+----------+--------------------+----------|
   | 25-pin Parallel |   CN1    | Serial port 2      |   CN3    |
   | port            |          | internal           |          |
   |-----------------+----------+--------------------+----------|
   | Serial port 1   |   CN2    |                    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SERIAL PORT 1 CONFIGURATION                 |
   |------------------------------------------------------------|
   |       COM        |       JP1/B        |       JP1/A        |
   |------------------+--------------------+--------------------|
   |       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/B        |        JP2/A        |
   |----------------+---------------------+---------------------|
   |      COM1      |  Pins 2 & 3 closed  |      All open       |
   |----------------+---------------------+---------------------|
   |      COM2      |  Pins 1 & 2 closed  |      All open       |
   |----------------+---------------------+---------------------|
   |      COM3      |      All open       |  Pins 2 & 3 closed  |
   |----------------+---------------------+---------------------|
   |      COM4      |      All open       |  Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 1 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   | Setting |    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               |
   |------------------------------------------------------------|
   | Setting |    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   |            |           |
   |---------+------------+------------+------------+-----------|
   |  IRQ4   |  All open  |  All open  | Pins 1 & 2 | All open  |
   |         |            |            |   closed   |           |
   |---------+------------+------------+------------+-----------|
   |  IRQ3   |  All open  |  All open  |  All open  | Pins 1 &  |
   |         |            |            |            | 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT 2 INTERRUPT SELECT               |
   |------------------------------------------------------------|
   | Setting |    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               |
   |------------------------------------------------------------|
   | Setting |    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   |            |           |
   |---------+------------+------------+------------+-----------|
   |  IRQ4   |  All open  |  All open  | Pins 2 & 3 | All open  |
   |         |            |            |   closed   |           |
   |---------+------------+------------+------------+-----------|
   |  IRQ3   |  All open  |  All open  |  All open  | Pins 2 &  |
   |         |            |            |            | 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    PARALLEL PORT SELECT                    |
   |------------------------------------------------------------|
   |            Port            |            JP11/A             |
   |----------------------------+-------------------------------|
   |            LPT1            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |            LPT2            |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PARALLEL PORT INTERRUPT SELECT               |
   |------------------------------------------------------------|
   |            IRQ             |            JP11/B             |
   |----------------------------+-------------------------------|
   |            IRQ5            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |            IRQ7            |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PARALLEL PORT DIRECTION SELECT               |
   |------------------------------------------------------------|
   |          Setting           |             JP12              |
   |----------------------------+-------------------------------|
   |       Bi-Directional       |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |       Uni-Drectional       |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+