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       # MEDIA VISION TECHNOLOGY, INC.
       
          THUNDERBOARD (650-0007-03)
       
          Card Type           Sound card                                 
          Chip Set            Yamaha                                     
          I/O Options         Game port, microphone jack, line out       
          Data Bus            8-bit ISA                                  
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | Game port            |  CN1  | Line out            |  CN3  |
          |----------------------+-------+---------------------+-------|
          | Microphone jack      |  CN2  | Volume control      |  VR1  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Function                | Label  | Position |
          |----------------------------------------+--------+----------|
          | » | Factory configured - do not alter  | SW1/4  |    On    |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  | SW1/5  |    On    |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  | SW1/6  |    On    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   I/O ADDRESS SELECTION                    |
          |------------------------------------------------------------|
          |    Setting     |    SW1/3     |    SW1/2     |    SW1/1    |
          |----------------+--------------+--------------+-------------|
          |   |    210     |      On      |      On      |     Off     |
          |---+------------+--------------+--------------+-------------|
          | » |    220     |      On      |     Off      |     On      |
          |---+------------+--------------+--------------+-------------|
          |   |    230     |      On      |     Off      |     Off     |
          |---+------------+--------------+--------------+-------------|
          |   |    240     |     Off      |      On      |     On      |
          |---+------------+--------------+--------------+-------------|
          |   |    250     |     Off      |      On      |     Off     |
          |---+------------+--------------+--------------+-------------|
          |   |    260     |     Off      |     Off      |     On      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |   Setting   |   J1/A    |   J1/B    |   J1/C    |   J1/D   |
          |-------------+-----------+-----------+-----------+----------|
          |   |  IRQ2   |  Closed   |   Open    |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  IRQ3   |   Open    |  Closed   |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          | » |  IRQ5   |   Open    |   Open    |  Closed   |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  IRQ7   |   Open    |   Open    |   Open    |  Closed  |
          |------------------------------------------------------------|
          | Note: IRQ5 is the default for Windows and IRQ7 is the      |
          | default for DOS,                                           |
          +------------------------------------------------------------+