David A. Gatwood wrote:
>
>And why does this code appear to read from the same hardware address
>several times in a row?  Is that by design, or did I break something while
>porting it?  (or both... :-)
>

"Reading" a hardware address is not always done with the intention of 
obtaining its contents. Often it is done to clear a flag. This will 
often be the case when the address is that of a hardware register on 
the board.
Alternatively, it might be waiting for a flag to be raised.

Dan Killoran