Fujitsu M2488 manual Error Code 70 Sense Format Field Description, Byte BIT Value Description

M2488 PRODUCT GUIDE				MAINTENANCE AND SERVICING
			Table 8-2. Error Code 70 Sense Format Field Description
	BYTE	BIT	VALUE	DESCRIPTION
	0	7	1	When the valid bit is a one, sense bytes 3 to 6 indicate the difference between the number
				of bytes, blocks, or filemarks requested by a command and the number of bytes, blocks,
				or filemarks actually executed.
	1	0-7	00h	The segment number field contains the number of the current segment descriptor, if the
				REQUEST SENSE command is in response to a COPY, COMPARE or COPY AND
				VERIFY command. Up to 256 segments are supported beginning with segment zero.
	2	0-3		Sense Key. See Appendix A for sense key descriptions.
	2	5		The Incorrect Length Indicator (ILI) bit indicates the requested logical block length did
				not match the logical block length of the data on the medium.
	2	6		The End-Of-Medium (EOM) bit indicates an End-Of-Tape (EOT) or Beginning-Of-Tape
				(BOT) condition exists. This bit indicates the unit is at or past the early-warning EOT if
				the direction of the tape was forward or that the command could not be completed
				because BOT was encountered when the direction was reverse.
	2	7		The filemark bit indicates the current command has read a filemark.
	3-6			The contents of the information field is device-type or command-specific and is defined
				within the appropriate section for the device type or command of interest.
				The information bytes contain the difference (residue) of the requested length minus the
				actual length in either bytes or blocks, as determined by the command.
				When operating in the buffered mode and an unrecoverable write error occurs, the infor-
				mation bytes contain the number of unwritten data blocks and/or filemarks remaining in
				the buffer.
	7	0-7	24h	The additional sense length specifies the number of additional sense bytes to follow. If
				the allocation length of the Command Descriptor Block is too small to transfer all of the
				additional sense bytes, the additional sense length is not adjusted to reflect the trunca-
				tion.
	8-11			The command-specific information field contains information that depends on the com-
				mand which was executed. For this device, bytes 8-11 are zero.
	12-13			The Additional Sense Code (ASC) byte 12 and Additional Sense Code Qualifier (ASCQ)
				byte 13 provide additional error information. The additional sense codes and qualifiers
				are listed in Appendix B.
	14			Nonzero values in the FRU field are used to define a specific FRU or FRU-pair that has
				failed. The FRU byte contains two nibbles of information. The low order nibble indi-
				cates the highest probability FRU. The high-order nibble indicates a secondary FRU that
				may also be responsible for the reported failure. This field is not used.
	15	3	0	A bit pointer valid (BPV) bit of zero indicates that the value in the bit pointer field is not
				valid.
			1	A BPV of one indicates that the bit pointer field specifies which bit of the byte, desig-
				nated by the field pointer field, is in error. When a multiple-bit field is in error, the bit
				pointer field points to the most significant bit (left most) of the field.
	15	6	1	A command data (C/D) bit of one indicates that the illegal parameter is in the CDB.
			0	A C/D of zero indicates that the illegal parameter is in the data parameters sent by the
				initiator during the DATA OUT phase.

April 1997 CG00000-011503 REV. A 8-5