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       # ARNET CORPORATION
       
          PORTSPLUS
       
          Card Type          Serial controller                           
          Chipset/Controller 80186                                       
          I/O Options        Serial ports (2)                            
          Maximum DRAM       64KB                                        
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |    Purpose    |   Location   |    Purpose    |  Location   |
          |---------------+--------------+---------------+-------------|
          | Serial port 1 |     CN1      | Serial port 2 |     CN2     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     I/O ADDRESS SELECT                     |
          |------------------------------------------------------------|
          |   Address    |   SW1/1   |   SW1/2   |  SW1/3   |  SW1/4   |
          |--------------+-----------+-----------+----------+----------|
          | » |   320h   |    On     |    On     |    On    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   100h   |    Off    |    Off    |    On    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   110h   |    Off    |    On     |   Off    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   120h   |    Off    |    On     |    On    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   200h   |    On     |    Off    |   Off    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   220h   |    On     |    Off    |    On    |    On    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   300h   |    On     |    On     |   Off    |    On    |
          +------------------------------------------------------------+