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       # ADVANCED MICROCOMPUTER SYSTEMS, INC.
       
          MIO-RS422/485
       
          Card Type      Serial Card                                     
          Chip Set       Unidentified                                    
          I/O Options    Serial ports (two DB-25 on external cable)      
          Data Bus       16-bit ISA                                      
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                Function                |       Label       |
          |----------------------------------------+-------------------|
          |      37-pin serial port interface      |        CN1        |
          |------------------------------------------------------------|
          | Note: The cable off CN1 splits into two DB35 connectors.   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT CONFIGURATION                  |
          |------------------------------------------------------------|
          |     Setting      |   Serial Port 1    |   Serial Port 2    |
          |                  |                    |                    |
          |                  |         W4         |         W1         |
          |------------------+--------------------+--------------------|
          |      RS485       |       Closed       |       Closed       |
          |------------------+--------------------+--------------------|
          |      RS422       |        Open        |        Open        |
          +------------------------------------------------------------+