UNIDENTIFIED
============

   HARD DISK/FLOPPY CONTROLLER

   (AT COMPATIBLE)

   Card Type               Hard drive controller                  
   Hard Drives supported   Two ST-506/412 drives                  
   Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB        
   Data Bus                16-bit ISA                             
   Card Size               Full length, full-height               
                                                                  

<gopher://bitreich.org/I/th99/c/U-Z/21458-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function        | Label |      Function      | Label |
   |-----------------------+-------+--------------------+-------|
   | 34-pin control cable  |  J1   | 34-pin cable       |  J4   |
   | connector - hard      |       | connector - floppy |       |
   | drive                 |       | drive              |       |
   |-----------------------+-------+--------------------+-------|
   | 20-pin data cable     |  J2   | 37-pin hard drive  |  J5   |
   | connector - drive 0   |       | connector -        |       |
   |                       |       | external           |       |
   |-----------------------+-------+--------------------+-------|
   | 20-pin data cable     |  J3   | 4-pin connector -  |  J6   |
   | connector - drive 1   |       | drive active LED   |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            | Label |     Position      |
   |--------------------------------+-------+-------------------|
   |>> | Factory configured - do    |  W1   | Pins 1 & 2 closed |
   |   | not alter                  |       |                   |
   |---+----------------------------+-------+-------------------|
   |>> | Factory configured - do    |  W2   | Pins 1 & 2 closed |
   |   | not alter                  |       |                   |
   |---+----------------------------+-------+-------------------|
   |>> | Factory configured - do    |  W4   |       Open        |
   |   | not alter                  |       |                   |
   |---+----------------------------+-------+-------------------|
   |>> | Primary address for floppy |  W5   |       Open        |
   |   | drive is 3F2h, 3F4/3F7h    |       |                   |
   |---+----------------------------+-------+-------------------|
   |   | Secondary address for      |  W5   |      Closed       |
   |   | floppy drive is 372h,      |       |                   |
   |   | 374/377h                   |       |                   |
   |---+----------------------------+-------+-------------------|
   |>> | Primary address for hard   |  W6   |       Open        |
   |   | drive is 1F0/1F7h          |       |                   |
   |---+----------------------------+-------+-------------------|
   |   | Secondary address for hard |  W6   |      Closed       |
   |   | drive is 170/177h          |       |                   |
   |---+----------------------------+-------+-------------------|
   |>> | Factory configured - do    |  W7   |       Open        |
   |   | not alter                  |       |                   |
   |------------------------------------------------------------|
   |      Note:Location of pin 1 is unidentified.               |
   +------------------------------------------------------------+