Page
60
LTO SCSI Interface Manual
9
Test Flag Number
10
Test Flag Number
11
Test Flag Number, LSB
Field Descriptions
Field
Bytes
Bits
Description
Page
Code
0
0-5
1Ch, indicating the Information Exceptions Mode Page.
Additional
Page
Length
1
Always 0Ah, indicating that 10 parameter bytes follow the Page
Length byte.
Perf
2
7
Always 0, indicating that this feature is not supported.
DExcept
2
3
0 = Exception reporting is enabled.
1 = Exception reporting is disabled (default).
Test
2
2
0 = Normal operation (default).
1 = Fail next command (see below) with:
01/5D/FF if Test Flag Numbert is 0.
01/5D/00 if Test Flag Number indicates a valid value (see below).
This will be reported only one time between resets. Test bit and
Test Flag Number are cleared right away after the Mode Select
and are displayed as 0s in Mode Sense.
LogErr
2
0
Always 0, indicating that this feature is not supported.
MRIE
3
0-3
Always 3, so if an exception occurs, the next command (except In-
quiry and Request Sense) will get check condition status and the
Sense Key will be set to Recovered Error (01) and the Additional
Sense will be set to Failure Prediction Threshold Exceeded (5D00).
Interval
Timer
4-7
Always 0, indicating that this feature is not supported.
Test Flag
Number
8-11
This field is in 2’s complement.
0 = No flag number. If Test = 1, then Test bit will be cleared only in
Mode Sense when 01/5D/FF is returned.
If Test = 0 and Test Flag Number is not 0, return Check Condition.
If Test = 1 and Test Flag Number is one of the following:
1 to 64 = Set the indicated tape alert flag in log page 2Eh if it is
supported. Otherwise, return Check Condition.
-1 to -64 = Clear the indicated tape alert flag (from 1 to 64) if it is
supported. Otherwise, return Check Condition.
32767 = Set all supported tape alert flags.
Reserved
All reserved bits must be 0.
Drive Capabilities Control Mode Page
The Drive Capabilities Control mode page controls the capabilities of the Viper drive.
A single copy of this page is maintained for all initiators. New Inquiry String Control,
Firmware Test Control, and Data Compression Control will be in effect immediately
after Mode Select. New Operating Systems Support, Extended POST Mode, and
Autounload Mode will be in effect the next power cycle, after Mode Select. This page
persists across power cycles.
Byte
Bits
7
6
5
4
3
2
1
0
0
Reserved
Page Code (21h)
1
Page Length (07h)
2
Operating Systems Support
