ROLAND CORPORATION
==================

   MPU-401AT

   Card Type     MIDI interface                                   
   Chipset       N/A                                              
   Controller    
   I/O Options   Headphone jack, Minicircular connector (2),      
                 Stereo out jack (2)                              
   Maximum DRAM  N/A                                              

<gopher://bitreich.org/I/th99/i/P-R/50961-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Sound Canvas      |   CN1    | Stereo out jack  |    J3    |
   | Daughterboard     |          |                  |          |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Headphone jack    |    J1    | Minicircular     |    J4    |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | Stereo out jack   |    J2    | Minicircular     |    J5    |
   |                   |          | connector        |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |   Address    |   SW2/1   |   SW2/2   |  SW2/3   |  SW2/4   |
   |--------------+-----------+-----------+----------+----------|
   |>> |   330h   |    Off    |    Off    |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   300h   |    Off    |    Off    |   Off    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   320h   |    Off    |    Off    |   Off    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   332h   |    On     |    Off    |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   334h   |    On     |    On     |    On    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   336h   |    On     |    On     |    On    |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  INTERRUPT CONFIGURATION                   |
   |------------------------------------------------------------|
   | IRQ   |  JP1   |  JP2   |  JP3   |  JP4   |  JP5   |  JP6  |
   |-------+--------+--------+--------+--------+--------+-------|
   |>>| 2/9 |  Open  |  Open  |  Open  |  Open  |  Open  |Closed |
   |-+-----+--------+--------+--------+--------+--------+-------|
   | |  3  |  Open  |  Open  |  Open  |  Open  | Closed | Open  |
   |-+-----+--------+--------+--------+--------+--------+-------|
   | |  4  |  Open  |  Open  |  Open  | Closed |  Open  | Open  |
   |-+-----+--------+--------+--------+--------+--------+-------|
   | |  5  |  Open  |  Open  | Closed |  Open  |  Open  | Open  |
   |-+-----+--------+--------+--------+--------+--------+-------|
   | |  6  |  Open  | Closed |  Open  |  Open  |  Open  | Open  |
   |-+-----+--------+--------+--------+--------+--------+-------|
   | |  7  | Closed |  Open  |  Open  |  Open  |  Open  | Open  |
   +------------------------------------------------------------+