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       # UNIDENTIFIED
       
          YL-24
       
          Card Type          Multi I/O card                              
          Chipset/Controller Unknown                                     
          I/O Options        Parallel port, serial ports (2)             
          Maximum DRAM       N/A                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Purpose      | Location |     Purpose      | Location |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   CN1    | Serial port 2    |   CN3    |
          |-------------------+----------+------------------+----------|
          | Parellel port     |   CN2    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT CONFIGURATION                  |
          |------------------------------------------------------------|
          |    Port 1     |    Port 2     |    SW1/1     |    SW1/2    |
          |---------------+---------------+--------------+-------------|
          |    Enabled    |   Disabled    |      On      |     Off     |
          |---------------+---------------+--------------+-------------|
          |   Disabled    |    Enabled    |     Off      |     On      |
          |---------------+---------------+--------------+-------------|
          |   Disabled    |   Disabled    |     Off      |     Off     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PARALLEL PORT CONFIGURATION                 |
          |------------------------------------------------------------|
          |   LPT    |   SW1/3    |   SW1/4    |   SW1/5   |   SW1/6   |
          |----------+------------+------------+-----------+-----------|
          |    1     |     On     |     On     |    Off    |    Off    |
          |----------+------------+------------+-----------+-----------|
          |    2     |    Off     |     On     |    On     |    Off    |
          |------------------------------------------------------------|
          | Note: For LPT2 on AT models switches 3 & 4 are Off and 5 & |
          | 6 are on.                                                  |
          +------------------------------------------------------------+