MECER CORPORATION
=================

   B-303

   Card Type     Sound Card                                       
   Chipset       ESS Technologies, Inc. ES-688                    
   Controller    
   I/O Options   CD audio(2), CD-ROM interface(3), line in, line  
                 out, microphone in(2), SCSI interface, speaker   
                 out                                              
   Maximum Dram  N/A                                              

<gopher://bitreich.org/I/th99/i/M-O/50893-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Speaker out       |    J1    | Line out         |   JP4    |
   |-------------------+----------+------------------+----------|
   | Microphone in     |    J2    | Panasonic        |   JP5    |
   |                   |          | CD-audio in      |          |
   |-------------------+----------+------------------+----------|
   | Line in           |    J3    | Sony CD-audio in |   JP10   |
   |-------------------+----------+------------------+----------|
   | Panasonic CD-ROM  |    J6    | Mitsumi CD-ROM   |   JP11   |
   | interface         |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Sony CD-ROM       |    J7    | SCSI interface   |   JP13   |
   | interface         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Microphone in     |   JP2    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |          Address           |              JP1              |
   |----------------------------+-------------------------------|
   |>> |          220h          |       Pins 2 & 3 closed       |
   |---+------------------------+-------------------------------|
   |   |          240h          |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    INTERRUPT SELECTION                     |
   |------------------------------------------------------------|
   |            IRQ             |              JP7              |
   |----------------------------+-------------------------------|
   |>> |           7            |       Pins 1 & 2 closed       |
   |---+------------------------+-------------------------------|
   |   |           5            |       Pins 3 & 4 closed       |
   |---+------------------------+-------------------------------|
   |   |           9            |             Open              |
   |---+------------------------+-------------------------------|
   |   |           10           |   Pins 1 & 2, 3 & 4 closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |          Channel           |              JP3              |
   |----------------------------+-------------------------------|
   |>>  |           1           |             Open              |
   |----+-----------------------+-------------------------------|
   |    |           3           |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CD-ROM TYPE SELECTION                    |
   |------------------------------------------------------------|
   |             Type              |             J5             |
   |-------------------------------+----------------------------|
   |>> |         Panasonic         |     Pins 1 & 2 closed      |
   |---+---------------------------+----------------------------|
   |   |      Sony or Mitsumi      |     Pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CD-ROM ADDRESS SELECTION                  |
   |------------------------------------------------------------|
   |            Address             |           JCP2            |
   |--------------------------------+---------------------------|
   |>>    |          300h           |          Closed           |
   |------+-------------------------+---------------------------|
   |      |          340h           |           Open            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CD-ROM CONFIGURATION                    |
   |------------------------------------------------------------|
   |            Setting              |           JCP1           |
   |---------------------------------+--------------------------|
   |>> |           Enabled           |          Closed          |
   |---+-----------------------------+--------------------------|
   |   |          Disabled           |           Open           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  SCSI INTERRUPT SELECTION                  |
   |------------------------------------------------------------|
   |            IRQ             |             JP14              |
   |----------------------------+-------------------------------|
   |             11             |       Pins 2 & 4 closed       |
   |----------------------------+-------------------------------|
   |             12             |       Pins 1 & 3 closed       |
   +------------------------------------------------------------+