Informational Exceptions Control Page 1Ch - Sony AIT-SDX460 Product Specifications Manual

7. ATAPI Packet Command Specification
Note 1: SDX-460V accepts any number including 0FFh for the Parameter List Length in CDB, although the drive
returns valid information only. For example, in case of a single partition, SDX-460V returns 16h bytes of parameter
list (sufficient for one partition size descriptor), even if the host sets 0FFh for the Parameter List Length in CDB.
Note 2: The Partition Size represents a changeable value, because tapes can be re-initialized. The drive would
return N-1 pieces of partition size descriptors that contents is all 0FFh when N partitions on tape.
Note 3: Last partitions are open-ended partitions, because they are extendible up to the EOT. Consequently, the
size of the last partition can be calculated from the number of remaining frames, excluding the Option Device Area.
Note 4: The Volume Information Data is stored both into MIC and on tape, after completing a Mode Select Page
11h command. This is so, because the SysLogAlive bits must be valid on the tape, in order to indicate
where the System Log information is.
Note 5: SDX-460V create ODA (Optional Device Area) at all partitions except for the last partition.
Note 6: If ODA is active we can format this tape.
7.8.6.

Informational Exceptions Control Page 1Ch

The drive supports the Informational Exceptions Control Page which has the following format:
Table 7-41: MODE PAGE Informational Exceptions Control (1Ch)
Bit 7
Byte
0 PS(0) Reserved
1
2 Perf(0)
3
4 (MSB)
7
8 (MSB)
11
LogErr: Log Error bit (LogErr) of ZERO indicates that the logging of informational exception conditions by a drive
is vendor – specific. This bit of one indicates the drive shall log informational exception conditions.
Dexcpt: The Disable Exception Control (Dexcpt) bit of ZERO indicates information operations shall be enabled.
The reporting of information exception conditions when the Dexcpt bit is set to ZERO is determined from the
method of reporting informational exception field. The Dexcpt bit of ONE indicates the drive shall be disable all
information exception operations. The method of reporting informational exceptions field is ignored when Dexcpt is
set to ONE.
Test: The Teset bit of ZERO indicates the drive shall not generate any test/false informational exception condition.
This bit of ONE indicates the drive shall generate test/false informational exception conditions. The default value of
Test is ZERO.
Perf: The Performance bit (Per) of ZERO indicates that informational exception operations that are the cause of
delays are acceptable. The Perf bit of ONE indicates the drive shall be set to ZERO otherwise a CHECK
CONDITION with an ILLEGAL REQUEST sense key set.
MRIE: The Method of Reporting Informational Exceptions field (MRIE) indicates the method used by the drive to
report informational exception conditions. If the informational exception condition was generated by an event that
caused a real CHECK CONDITION to occur, then this real CHECK CONDITION will over-ride the CHECK
CONDITION defined in MRIE modes. The drive supports value 0 and 04.
7-42
6 5 4
Page Length (0Ah)
Reserved (0)
Reserved
Report Count/Test Flag Number
3 2
Page Code (1Ch)
Dexcpt Test
Interval Timer
(00 00 00 00h)
SONY AIT-1Turbo drive SDX-460V series Ver.1.0
MODE SENSE
1 0
Reserved LogErr (0)
MRIE
(LSB)
(LSB)