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       

<gopher://bitreich.org/I/th99/i/I-L/51749-1.png>
   

   +------------------------------------------------------------+
   |                        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       |
   +------------------------------------------------------------+