Cdb fields, Specific status, Mode parameter pages – HP Q153090901 User Manual
Page 72: Cdb fields: specific status
Commands
72
10-byte version
CDB fields:
Specific status:
Following a successful Mode Select command, Unit Attention status is posted to all initiators other
than the initiator of the Mode Select command. The sense key is set to
UNIT ATTENTION
. Additional
sense is set to 2A01h (mode parameters changed).
Mode parameter pages
Mode data is recovered from the drive by means of a
MODE SENSE
command. After modification,
it is returned to the drive via a
MODE SELECT
command. In real-life, many hosts do not use
MODE
SENSE
and return whatever
MODE SELECT
data suits them into the drive.
7
6
5
4
3
2
1
0
0
Operation Code (55h)
1
Reserved (0)
PF
Reserved (0)
SP (0)
2
(MSB)
Reserved (0)
6
(LSB)
7
(MSB)
Parameter List Length
8
(LSB)
9
Control
PF
Page Format
0 The
MODE SELECT
parameter data is not SCSI-2 mode page compatible. Only
the parameter header and block descriptor may be sent.
1 The parameter data is SCSI-2 mode-page compatible.
SP
Save Pages
0 This bit is not supported and must be zero.
Parameter List
Length
0 No data is transferred.
>0 The length in bytes of the
MODE SELECT
parameter list to be transferred.