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       # WESTERN DIGITAL CORPORATION
       
          WD1003-WA2
       
          Chipset                 Western Digital                        
          Data Bus                16-bit ISA                             
          Card Size               Full height, three-quarters length     
          Hard Drives Supported   Two ST506/412(MFM) devices             
          Floppy Drives Supported Two 360KB or 1.2MB drives              
       
   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   | 2-pin drive active  |  J6   |
          | connector - drive 2  |       | LED                 |       |
          |----------------------+-------+---------------------+-------|
          | 20-pin data cable    |  J4   |                     |       |
          | connector - drive 1  |       |                     |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                 | Label | Position  |
          |----------------------------------------+-------+-----------|
          | ยป | Hard drive interface supports all  |  E7   | Pins 1 &  |
          |   | standard transfer rates            |       | 2 closed  |
          |---+------------------------------------+-------+-----------|
          |   | Hard drive interface does not      |  E7   | Pins 2 &  |
          |   | support 300Kbps transfer rate      |       | 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |          Setting           |              E1               |
          |----------------------------+-------------------------------|
          |          Primary           |   Pins 2 & 3, 5 & 6 closed    |
          |----------------------------+-------------------------------|
          |         Secondary          |   Pins 1 & 2, 4 & 5 closed    |
          +------------------------------------------------------------+