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       # COMPUTONE CORPORATION
       
          VALUEPORT V4
       
          Card Type         Serial                                       
          Chip Set          Unidentified                                 
          I/O Options       Serial ports (4)                             
          Data Bus          8-bit ISA                                    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                 Function                 |      Label      |
          |------------------------------------------+-----------------|
          | Serial ports via DB-37 port              |       CN1       |
          |------------------------------------------------------------|
          |      Note:Standard DB-25 serial ports are provided on an   |
          |      included adapter cable.                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                 | Label  | Position |
          |----------------------------------------+--------+----------|
          | » | Interrupt sharing disabled         | SW1/9  |    On    |
          |---+------------------------------------+--------+----------|
          |   | Interrupt sharing enabled          | SW1/9  |   Off    |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  | SW1/10 |   Off    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT ADDRESSES/INTERRUPTS              |
          |------------------------------------------------------------|
          | Option |  Port 1  | IRQ |  Port 2  | IRQ | Port 3 | Port 4 |
          |--------+----------+-----+----------+-----+--------+--------|
          |    | 1 |   3F8h   |  4  |   2F8h   |  3  |  1B0h  |  1B8h  |
          |    |   | (COM1:)  |     | (COM2:)  |     |        |        |
          |----+---+----------+-----+----------+-----+--------+--------|
          |    | 2 |   3F8h   |  4  |   2F8h   |  3  |  2B0h  |  2B8h  |
          |    |   | (COM1:)  |     | (COM2:)  |     |        |        |
          |----+---+----------+-----+----------+-----+--------+--------|
          | »  | 3 |   1A0h   | SW1 |   1A8h   | SW1 |  1B0h  |  1B8h  |
          |----+---+----------+-----+----------+-----+--------+--------|
          |    | 4 |   2A0h   | SW1 |   2A8h   | SW1 |  2B0h  |  2B8h  |
          |------------------------------------------------------------|
          |      Note:The interrupt for port 3 and port 4 is always    |
          |      set by SW1.                                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          SERIAL PORT ADDRESSES/INTERRUPTS (CON’T)          |
          |------------------------------------------------------------|
          |         Option         |      SW1/7      |      SW1/8      |
          |------------------------+-----------------+-----------------|
          |         |      1       |       On        |       Off       |
          |---------+--------------+-----------------+-----------------|
          |         |      2       |       On        |       On        |
          |---------+--------------+-----------------+-----------------|
          | »       |      3       |       Off       |       Off       |
          |---------+--------------+-----------------+-----------------|
          |         |      4       |       Off       |       On        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         INTERRUPT                          |
          |------------------------------------------------------------|
          | Setting | SW1/1  | SW1/2  | SW1/3  | SW1/4 | SW1/5 | SW1/6 |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ2   |   On   |  Off   |  Off   |  Off  |  Off  |  Off  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ3   |  Off   |   On   |  Off   |  Off  |  Off  |  Off  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ4   |  Off   |  Off   |   On   |  Off  |  Off  |  Off  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ5   |  Off   |  Off   |  Off   |  On   |  Off  |  Off  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ6   |  Off   |  Off   |  Off   |  Off  |  On   |  Off  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  IRQ7   |  Off   |  Off   |  Off   |  Off  |  Off  |  On   |
          +------------------------------------------------------------+