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I saw Hale ask for other people to define residue ... Now at: http://members.aol.com/plscsi/199402/residual.txt you can see a copy of an announcement of Adaptec's decision to bother to measure residue, dated February, 1994, taken from a contemporaneous aspisdk.exe. Included is the definition from Adaptec: "Residual byte length is the number of bytes not transferred to, or received from, the target SCSI device. And the examples: "For example, if the ASPI buffer length for a SCSI Inquiry command is set for 100 bytes, but the target only returns back 36 bytes, this makes for a residual length of 64 bytes. "Another example, if the ASPI buffer length for a SCSI write command is set for 514 bytes, but the target only takes 512 bytes, this makes for a residual length of 2 bytes. Enjoy. Pat LaVarre
