Quantum DLTtape DLT1, Interface Manual

Page: 125 / 182

DLT1/VS80 SCSI Interface Guide
81-81276-01 Rev A01 July 2004 4-83
4.10.9 TapeAlert Page (1Ch)
The TapeAlert Page specifies parameters that control the TapeAlert mode select configuration.
Figure 4-54. TapeAlert Page — Data Format
Bit
Byte
7 6 5 4 3 2 1 0
0 PS 0 Page Code (1Ch)
1 Page Length (0Ah)
2 Perf Reserved DExcpt Test Rsv’d LogErr
3 Reserved MRIE
4 - 7 Interval Timer
8 - 11 Report Count / Text Flag Number
Table 4-50.
TapeAlert Page — Field Descriptions
Field Name Description
PS Parameters Savable. Saving parameters is not supported and is 0.
Perf Performance. This field always returns 0.
0– Indicates that the tape drive may incur higher command overhead when
processing some TapeAlert information exception conditions.
DExcpt Disable Exception Operations. Disable Exceptions bit returns 1 which indicates no
TapeAlert exception conditions are generated. This is polled mode for TapeAlert.
Test TapeAlert Flag Test. This field always returns 0, even though the MODE SELECT
command can change it.
LogErr Log Errors. This bit always returns 0, which indicates that the logging of
informational exception conditions is specific. The tape drive reports the
informational exception condition when processing of such information is
convenient for the tape drive. Depending on resource availability within the tape
drive, processing of informational exceptions may be delayed until more
processing time and memory are available.
MRIE Method of Reporting Informational Exception. This field is ignored in MODE
SELECT since the DExcpt bit is always 1. This is the polled mode for TapeAlert.
The value in MODE SENSE is always 03h.
Interval Timer Not supported, this field always returns 0.