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       # IBM CORPORATION
       
          EASY OPTIONS GAME & AUDIO CARD AC525
       
          Card Type       Sound card                                     
          Chip Set        Unidentified                                   
          Maximum Onboard N/A                                            
          Memory          
          I/O Options     Game/MIDI port, microphone in, speaker, volume 
          Data Bus        8-bit ISA                                      
          Floppy drives   N/A                                            
          supported       
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label |      Function      | Label |
          |-----------------------+-------+--------------------+-------|
          | Game/MIDI port        |  CN1  | Mic in             |  J2   |
          |-----------------------+-------+--------------------+-------|
          | Speaker               |  J1   | Volume             |  VR1  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          |   | MIDI port disabled              | SW1/1 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | MIDI port enabled               | SW1/1 |     Off      |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | SW1/5 | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Game port disabled              | SW1/6 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Game port enabled               | SW1/6 |     Off      |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | SW2/1 | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             GAME/MIDI PORT INTERRUPT SELECTION             |
          |------------------------------------------------------------|
          |    IRQ    |    J6/A    |   J6/B    |   J6/C    |   J6/D    |
          |-----------+------------+-----------+-----------+-----------|
          |   |   2   |   Closed   |   Open    |   Open    |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          |   |   3   |    Open    |  Closed   |   Open    |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          |   |   5   |    Open    |   Open    |  Closed   |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          | » |   7   |    Open    |   Open    |   Open    |  Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 AUDIO INTERRUPT SELECTION                  |
          |------------------------------------------------------------|
          |    IRQ    |    J7/A    |   J7/B    |   J7/C    |   J7/D    |
          |-----------+------------+-----------+-----------+-----------|
          |   |   2   |   Closed   |   Open    |   Open    |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          |   |   3   |    Open    |  Closed   |   Open    |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          | » |   5   |    Open    |   Open    |  Closed   |   Open    |
          |---+-------+------------+-----------+-----------+-----------|
          |   |   7   |    Open    |   Open    |   Open    |  Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          DIGITAL AUDIO BASE I/O ADDRESS SELECTION          |
          |------------------------------------------------------------|
          |      Address       |    SW1/2    |    SW1/3    |   SW1/4   |
          |--------------------+-------------+-------------+-----------|
          |    |     210h      |     On      |     On      |    Off    |
          |----+---------------+-------------+-------------+-----------|
          | »  |     220h      |     Off     |     Off     |    Off    |
          |----+---------------+-------------+-------------+-----------|
          |    |     230h      |     On      |     Off     |    Off    |
          |----+---------------+-------------+-------------+-----------|
          |    |     240h      |     Off     |     On      |    On     |
          |----+---------------+-------------+-------------+-----------|
          |    |     250h      |     Off     |     On      |    Off    |
          |----+---------------+-------------+-------------+-----------|
          |    |     260h      |     Off     |     Off     |    On     |
          |----+---------------+-------------+-------------+-----------|
          |    |   Disabled    |     On      |     On      |    On     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         GAME/MIDI PORT BASE I/O ADDRESS SELECTION          |
          |------------------------------------------------------------|
          |         Address         |      SW2/2      |     SW2/3      |
          |-------------------------+-----------------+----------------|
          |        |      300h      |       On        |       On       |
          |--------+----------------+-----------------+----------------|
          |        |      310h      |       Off       |       On       |
          |--------+----------------+-----------------+----------------|
          |        |      320h      |       On        |      Off       |
          |--------+----------------+-----------------+----------------|
          | »      |      330h      |       Off       |      Off       |
          +------------------------------------------------------------+