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                                  

<gopher://bitreich.org/I/th99/i/M-O/50503-1.png>
   

   +------------------------------------------------------------+
   |                        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,                                           |
   +------------------------------------------------------------+