HP C737990900 - Manual (Page 156)

156 Commands
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Immediate or Non-Immediate Report (Buffered mode).
Residue information is set in the sense data byte, with the Valid bit set and the
information bytes set to the residue.
Block Mode Buffered Mode Residue
Variable 0 Number of unwritten bytes
Fixed 0 Number of unwritten blocks
Variable not 0 Total number of unwritten bytes and marks (including those
buffered before the command was received). The size can be
greater than the command operation size.
specifically 1 Contains residues of all initiators with data in the buffer.
Fixed not 0 Total number of unwritten blocks and marks (including those
buffered before the command was received). The size can be
greater than the command operation size.
specifically 1 Contains residues of all initiators with data in the buffer.