BEST UNION ELECTRONICS CO., LTD.
================================

   MM AUDIO TELEPHONY 3100

   Card Type       Sound card                                     
   Chip Set        Unidentified                                   
   Maximum Onboard None                                           
   Memory          
   I/O Options     Game/MIDI port, line in, line out, microphone, 
                   telephone                                      
   Data Bus        16-bit ISA                                     
   Floppy drives   None                                           
   supported       

<gopher://bitreich.org/I/th99/i/A-B/52087-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Function       | Label  |      Function      | Label  |
   |---------------------+--------+--------------------+--------|
   | 4-pin connector     |  CN1   | Game/MIDI port     |  CN7   |
   |---------------------+--------+--------------------+--------|
   | 4-pin connector     |  CN2   | Telephone          |   J1   |
   |---------------------+--------+--------------------+--------|
   | 4-pin connector     |  CN3   | Line in            |   J2   |
   |---------------------+--------+--------------------+--------|
   | 4-pin connector     |  CN4   | Microphone         |   J3   |
   |---------------------+--------+--------------------+--------|
   | 3-pin connector     |  CN5   | Line out           |   J4   |
   |---------------------+--------+--------------------+--------|
   | 4-pin connector     |  CN6   |                    |        |
   |------------------------------------------------------------|
   | Note: The exact function & purpose of CN1 - CN6 is         |
   | unidentified.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Label  |  Position  |
   |--------------------------------------+--------+------------|
   |>> | I/O port address is 220h - 22Fh  | JMPBO  | Pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | I/O port address is 240h - 24Fh  | JMPBO  | Pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | EEPROM hardware settings enabled | JMPCFG | Pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | EEPROM hardware settings         | JMPCFG | Pins 2 & 3 |
   |   | disabled                         |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Condenser microphone select      |  JX1   | Pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Carbon microphone select         |  JX1   | Pins 2 & 3 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+