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> CD and IO ...

One of the popular firms who give short courses in interface protocols is known to 
have published a quick-reference card, distributed without bold errata, that gets the 
IO:CD bits backwards.  The card shows them in CD:IO Scsi order rather than in the 
IO:CD Ata order.

This is so pernicious that internally I refuse to deal with the bits separately.  I 
speak only of (x1F2 SectorCount & x03 Phase) = one of x00 DataOut, x01 CommandOut, x02 
DataIn, or x03 StatusIn.

Pat LaVarre


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