Sony SDX-1100V/R manual Eom Ili, Sksv, Cln, Mew

REQUEST SENSE											6.Command Specification
			Table 6-87: Error Codes 70h and 71h Sense Data Format
	Bit	7	6	5		4		3		2		1	0
	Byte
	0	Valid					Error	Code (70h or	71h)
	1					Segment Number
	2	Filemark	EOM	ILI		Reserved					Sense Key
	3	(MSB)					Information
	6												(LSB)
	7				Additional Sense Length (14h)
	8	(MSB)			Command-Specific Information
	11												(LSB)
	12				Additional Sense Code (ASC)
	13			Additional Sense Code Qualifier (ASCQ)
	14				Field Replaceable Unit Code
	15	SKSV				Sense-Key Specific
	17
	18						Reserved
	19	(MSB)			Read/Write Data Error Counter
	21												(LSB)
	22	(MSB)				Remaining Tape
	25												(LSB)
	26		Reserved					CLN			Reserved		MEW
	27						Reserved

Valid: A valid bit of one indicates that the Information field holds residual data.

Error Code: A value of 70h indicates a current error, i.e. the report is associated with the most recently received command. A value of 71h indicates a deferred error, i.e. the report is associated with a previous command and is not as a result of the current command. No other values will be returned.

Segment Number: This field contains the number of the current segment descriptor if the REQUEST SENSE command is in response to a COPY command. Otherwise this byte is ZERO. This field is not supported and is always set to ZERO.

Filemark: This bit indicates that the current command has read a Filemark or a Setmark. Reporting of Setmarks is optional and indicated by the RSmk bit in the MODE SENSE/SELECT Device Configuration Parameter page.

EOM: An End-Of-Medium (EOM) bit of ONE indicates that an End-Of-Medium condition exists. This bit of ONE indicates that the drive is at or past the Logical Early-Warning Point if the direction was forward, or that the command could not be completed because Beginning-Of-Partition was encountered if the direction was reverse. The drive will also set the Sense Key to NO SENSE and the Additional Sense Code Qualifier to either 04h for Beginning of Partition or 02h for End of Partition.

For WRITE type operations, the drive will return a CHECK CONDITION on any operation which occurs following detection of the Early-Warning End-of-Partition marker. The EOM and Additional Sense Code fields will be set.

For READ type operations, the drive will not return a CHECK CONDITION until the drive encounters the physical End-of-Partition.

Note that at PHYSICAL End-of-Partition, a WRITE FILEMARK command will cause the command to terminate with a CHECK CONDITION and a sense key of VOLUME OVERFLOW.

ILI: This is the Incorrect Length Indicator bit, which indicates that the requested logical block length did not match the logical block length of the data on the medium. Only READ may cause this bit to be set.

Information: This field contains the differences (residue) of the requested length minus the actual length in either bytes, blocks, Filemarks or Setmarks as determined by the command. (Negative values are indicated by two’s complement notation.) These bytes will be valid for all READ, WRITE and SPACE commands for which a CHECK CONDITION status has been generated. These bytes will be ZERO for MODE SELECT/SENSE, INQUIRY, READ BLOCK LIMITS and TEST UNIT READY commands.

SONY AIT-5 drive SDX-1100V series Ver.1.0 6-85