WESTERN DIGITAL CORPORATION
===========================

   WD1005-WAH

   Data bus: 16-bit, PC/XT

   Size: Full-length, full-height card

   Hard drives supported:  Two ESDI ST506/412 drives, 34 sectors
   per track hard sector only

   Floppy drives supported: None

<gopher://bitreich.org/I/th99/c/U-Z/20225-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                 Function                  |    Location    |
   |-------------------------------------------+----------------|
   | 4-pin connector-external LED              |      CN1       |
   |-------------------------------------------+----------------|
   | 20-pin data cable connector-drive 1       |      CN2       |
   |-------------------------------------------+----------------|
   | 20-pin data cable connector-drive 0       |      CN3       |
   |-------------------------------------------+----------------|
   | 34-pin control cable connector-hard drive |      CN4       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Normal operation               |   JP1    |    open    |
   |---+--------------------------------+----------+------------|
   |   | Factory diagnostic mode        |   JP1    |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Sector translation enabled.    |   JP2    |    open    |
   |---+--------------------------------+----------+------------|
   |   | Sector translation disabled    |   JP2    |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Hard drive port address is     |   JP3    | pins 2 & 3 |
   |   | 1F0-1F7h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard drive port address is     |   JP3    | pins 1 & 2 |
   |   | 170-177h                       |          |   closed   |
   +------------------------------------------------------------+