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       # WESTERN DIGITAL CORPORATION
       
          WDXT-150
       
          Data bus: 8-bit, PC/XT
       
          Size: Half-length, full-height card
       
          Hard drives supported:  One IDE (XT) interface drives
       
          Floppy drives supported: None
       
          Maximum heads/cyl.: 8 heads and 1024 cylinders
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 40-pin IDE (XT) Interface control cable         |    J1    |
          | connector-internal                              |          |
          |-------------------------------------------------+----------|
          | 5-pin connector-DC power                        |    J2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function            | Location |    Setting     |
          |--------------------------------+----------+----------------|
          | » | BIOS address is CA00h      |    W1    |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | BIOS address is C800h      |    W1    |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | I/O port address is 320h   |    W2    |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | I/O port address is 324h   |    W2    |   pins 2 & 3   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          | » | Hardware interrupt is IRQ5 |    W3    |   pins 1 & 2   |
          |   |                            |          |     closed     |
          |---+----------------------------+----------+----------------|
          |   | Hardware interrupt is IRQ4 |    W3    |   pins 2 & 3   |
          |   |                            |          |     closed     |
          +------------------------------------------------------------+