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On Mon, 10 Dec 2001 13:41:22 -0700, Pat LaVarre wrote: >You only have one step further to go: all you have to add is >your explanation of HOW the host and the target come to agree >over how many bytes they jointly agreed to move. For an ATA command the command code and other command parameters (such as the Sector Count) exactly specify the number of bytes that will be transferred if there is no error. For an ATAPI PACKET command the "SCSI CDB" specifies the number of bytes that will be transferred if there is no error. No problem here. Again, the ATA/ATAPI host (that thing issuing the command over the ATA interface) must understand what the commands are, which way they move data (if they move data) and how much data and must preform the data transfer on the ATA interface without violating the ATA/ATAPI command protocols. There is no explaination for "HOW the host and the target come to agree over how mamy bytes they jointly agreeed to move". That is becaue the command and the command parameters told both that value. There is no guessing here. *** Hale Landis *** [EMAIL PROTECTED] *** *** Niwot, CO USA *** www.ata-atapi.com *** Subscribe/Unsubscribe instructions can be found at www.t13.org.
