(TXT) View Source
       
       # COVOX INC.
       
          SOUND MASTER II
       
          Card Type          Sound Card                                  
          Chipset/Controller YM3812                                      
          I/O Options        Line in (2), microphone jack, MIDI port,    
                             volume control                              
          Maximum DRAM       N/A                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |    Purpose     | Location |       Purpose       | Location |
          |----------------+----------+---------------------+----------|
          | Volume control |   CN1    | PC speaker          |   CN4    |
          |                |          | connector           |          |
          |----------------+----------+---------------------+----------|
          | Speaker jack   |   CN2    | Microphone jack     |    M1    |
          |----------------+----------+---------------------+----------|
          | Game/MIDI port |   CN3    | Line in 2           |    M2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      INTERRUPT SELECT                      |
          |------------------------------------------------------------|
          |    IRQ    |   J3    |   J4    |   J5    |   J6    |   J7   |
          |-----------+---------+---------+---------+---------+--------|
          | » | IRQ7  |  Open   |  Open   |  Open   |  Open   | Closed |
          |---+-------+---------+---------+---------+---------+--------|
          |   | IRQ6  |  Open   |  Open   |  Open   | Closed  |  Open  |
          |---+-------+---------+---------+---------+---------+--------|
          |   | IRQ5  |  Open   |  Open   | Closed  |  Open   |  Open  |
          |---+-------+---------+---------+---------+---------+--------|
          |   | IRQ4  |  Open   | Closed  |  Open   |  Open   |  Open  |
          |---+-------+---------+---------+---------+---------+--------|
          |   | IRQ3  | Closed  |  Open   |  Open   |  Open   |  Open  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   MIDI INTERRUPT SELECT                    |
          |------------------------------------------------------------|
          |     IRQ     |    J8     |    J9     |    J10    |   J11    |
          |-------------+-----------+-----------+-----------+----------|
          | » |  IRQ2   |  Closed   |   Open    |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  IRQ3   |   Open    |  Closed   |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  IRQ5   |   Open    |   Open    |  Closed   |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  IRQ7   |   Open    |   Open    |   Open    |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     I/O ADDRESS SELECT                     |
          |------------------------------------------------------------|
          |   Address   |    J12    |    J13    |    J14    |   J15    |
          |-------------+-----------+-----------+-----------+----------|
          | » |  22Xh   |  Closed   |   Open    |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  24Xh   |   Open    |  Closed   |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  28Xh   |   Open    |   Open    |  Closed   |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  2CXh   |   Open    |   Open    |   Open    |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         DRQ SELECT                         |
          |------------------------------------------------------------|
          |         DRQ         |        J16        |       J17        |
          |---------------------+-------------------+------------------|
          | » |      DRQ1       |       Open        |      Closed      |
          |---+-----------------+-------------------+------------------|
          |   |      DRQ3       |      Closed       |       Open       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        DACK SELECT                         |
          |------------------------------------------------------------|
          |         DACK         |       J18        |       J19        |
          |----------------------+------------------+------------------|
          | » |      DACK1       |       Open       |      Closed      |
          |---+------------------+------------------+------------------|
          |   |      DACK3       |      Closed      |       Open       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   FM PORT ADDRESS SELECT                   |
          |------------------------------------------------------------|
          |          Address           |              J1               |
          |----------------------------+-------------------------------|
          | » |          388h          |       Pins 1 & 2 closed       |
          |---+------------------------+-------------------------------|
          |   |          380h          |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  MIDI PORT ADDRESS SELECT                  |
          |------------------------------------------------------------|
          |          Address           |              J2               |
          |----------------------------+-------------------------------|
          | » |          330h          |       Pins 1 & 2 closed       |
          |---+------------------------+-------------------------------|
          |   |          338h          |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+