MODULAR CIRCUIT TECHNOLOGY
==========================

   MCT-PDC-HD4

   Card Type          Floppy drive controller                     
   Chipset/Controller Unidentified                                
   I/O Options        Floppy drive interface (4)                  
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/M-O/50392-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Purpose       | Location |    Purpose     | Location |
   |---------------------+----------+----------------+----------|
   | Floppy drive        |   CN1    | Floppy drive   |   CN2    |
   | interface (for      |          | interface (for |          |
   | drives 1 & 2)       |          | drives 3 & 4)  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FIRST DRIVE TYPE SELECTION                 |
   |------------------------------------------------------------|
   |        Type        |        J1/A        |       J1/B       |
   |--------------------+--------------------+------------------|
   |       360KB        |       Closed       |       Open       |
   |--------------------+--------------------+------------------|
   |       720KB        |       Closed       |      Closed      |
   |--------------------+--------------------+------------------|
   |       1.2MB        |        Open        |       Open       |
   |--------------------+--------------------+------------------|
   |       1.44MB       |        Open        |      Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                SECOND DRIVE TYPE SELECTION                 |
   |------------------------------------------------------------|
   |        Type        |       J1/C        |       J1/D        |
   |--------------------+-------------------+-------------------|
   |       360KB        |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   |       720KB        |      Closed       |      Closed       |
   |--------------------+-------------------+-------------------|
   |       1.2MB        |       Open        |       Open        |
   |--------------------+-------------------+-------------------|
   |       1.44MB       |       Open        |      Closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 THIRD DRIVE TYPE SELECTION                 |
   |------------------------------------------------------------|
   |        Type        |        J1/E        |       J1/F       |
   |--------------------+--------------------+------------------|
   |       360KB        |       Closed       |       Open       |
   |--------------------+--------------------+------------------|
   |       720KB        |       Closed       |      Closed      |
   |--------------------+--------------------+------------------|
   |       1.2MB        |        Open        |       Open       |
   |--------------------+--------------------+------------------|
   |       1.44MB       |        Open        |      Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FOURTH DRIVE TYPE SELECTION                 |
   |------------------------------------------------------------|
   |        Type        |       J1/G        |       J1/H        |
   |--------------------+-------------------+-------------------|
   |       360KB        |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   |       720KB        |      Closed       |      Closed       |
   |--------------------+-------------------+-------------------|
   |       1.2MB        |       Open        |       Open        |
   |--------------------+-------------------+-------------------|
   |       1.44MB       |       Open        |      Closed       |
   +------------------------------------------------------------+