DTK  COMPUTER, INC.
===================

   MINI/MICRO-4 FDC, PII-158B

   Card Type          Floppy drive controller                     
   Chipset/Controller Unknown                                     
   I/O Options        Floppy drive interface (2)                  
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/C-D/50273-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Purpose        | Location |   Purpose    | Location |
   |-----------------------+----------+--------------+----------|
   | Floppy drive          |    P1    | Floppy drive |    P2    |
   | interface             |          | interface    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE SPEED SETTING                 |
   |------------------------------------------------------------|
   |       Speed Setting        |              JP1              |
   |----------------------------+-------------------------------|
   |>>   |        Single        |       Pins 1 & 2 closed       |
   |-----+----------------------+-------------------------------|
   |     |         Dual         |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   FLOPPY DRIVE DATA RATE                   |
   |------------------------------------------------------------|
   | Data Rate (KB/s) |   Precompensation   |        JP2        |
   |                  |        (ns)         |                   |
   |------------------+---------------------+-------------------|
   |       500        |         125         | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       250        |         125         | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       300        |         125         | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       250        |         125         | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       250        |         125         | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       1000       |         83          | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       1000       |         83          | Pins 2 & 3 closed |
   |------------------+---------------------+-------------------|
   |       500        |         125         | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       125        |         250         | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       125        |         208         | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       125        |         250         | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       125        |         250         | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       1000       |         83          | Pins 1 & 2 closed |
   |------------------+---------------------+-------------------|
   |       1000       |         83          | Pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SYSTEM TYPE CONFIGURATION                  |
   |------------------------------------------------------------|
   |               Type                |          JP3           |
   |-----------------------------------+------------------------|
   |>> |         XT/compatible         |         Closed         |
   |---+-------------------------------+------------------------|
   |   |         AT/compatible         |          Open          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               FLOPPY DRIVE ADDRESS SETTINGS                |
   |------------------------------------------------------------|
   |    Address    |   JP4/A   |  JP4/B   |  JP4/C   |  JP4/D   |
   |---------------+-----------+----------+----------+----------|
   | CAOOOh-CBFFFh |  Closed   |   Open   |  Closed  |   Open   |
   |---------------+-----------+----------+----------+----------|
   | CCCOOh-CDFFFh |   Open    |  Closed  |   Open   |  Closed  |
   |---------------+-----------+----------+----------+----------|
   | CEOOOh-CFFFFh |  Closed   |   Open   |   Open   |  Closed  |
   +------------------------------------------------------------+

   +--------------------------------------------------------------+
   |                     DRIVE TYPE SELECTION                     |
   |--------------------------------------------------------------|
   |      |Drive |Drive |Drive |Drive |      |      |      |      |
   |      |  A   |  B   |  C   |  D   |      |      |      |      |
   |------+------+------+------+------+------+------+------+------|
   | Type |JP5/A |JP5/B |JP5/C |JP5/D |JP5/E |JP5/F |JP5/G |JP5/H |
   |------+------+------+------+------+------+------+------+------|
   |360KB |Closed|Closed|Closed|Closed|Closed|Closed|Closed|Closed|
   |------+------+------+------+------+------+------+------+------|
   |720KB | Open |Closed| Open |Closed| Open |Closed| Open |Closed|
   |------+------+------+------+------+------+------+------+------|
   |1.2MB |Closed| Open |Closed| Open |Closed| Open |Closed| Open |
   |------+------+------+------+------+------+------+------+------|
   |1.44MB| Open | Open | Open | Open | Open | Open | Open | Open |
   +--------------------------------------------------------------+