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       # UNIDENTIFIED
       
          HFDC-6V
       
          Card Type               Hard drive controller                  
          Hard Drives supported   Unidentified                           
          Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB        
          Data Bus                16-bit ISA                             
          Card Size               Half-length, full-height               
                                                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | 34-pin cable         |  J1   | 34-pin control      |  J5   |
          | connector - floppy   |       | cable connector -   |       |
          | drive                |       | hard drive          |       |
          |----------------------+-------+---------------------+-------|
          | 20-pin data cable    |  J3   | Drive active LED    |  J6   |
          | connector - drive 1  |       |                     |       |
          |----------------------+-------+---------------------+-------|
          | 20-pin data cable    |  J4   |                     |       |
          | connector - drive 0  |       |                     |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | 360 RPM floppy disk drive mode    |   E   | Pins 8 & 9 |
          |   | enabled                           |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | 300 RPM floppy disk drive mode    |   E   | Pins 7 & 8 |
          |   | enabled                           |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            PRIMARY/SECONDARY ADDRESS SELECTION             |
          |------------------------------------------------------------|
          |          Setting           |               E               |
          |----------------------------+-------------------------------|
          | » | Primary address        |   Pins 2 & 3, 5 & 6 closed    |
          |---+------------------------+-------------------------------|
          |   | Secondary address      |   Pins 1 & 2, 4 & 5 closed    |
          +------------------------------------------------------------+