Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide
159
Table 89
MODE SENSE
Command Descriptor Block —
Field Descriptions
Field
Description
LLBAA
Long LBA Accepted. Must be set to 0.
DBD
Disable Block Descriptors. When set to 0, the drive returns the block descriptor
data. When set to 1, the drive does not return block descriptor information.
PC
Page Control. Indicates the type of page parameter values the drive returns to
the host:
PC
Type of Parameter Values
00b
Report Current Values
01b
Report Changeable Values
10b
Report Default Values
11b
Report Saved Values
Page Code
Allows the host to select a specific page or all of the pages the drive supports.
SubPage Code
Specifies the subpage to return. Set to FFh to return all subpages.
Allocation Length
Specifies the number of bytes that the host has allocated for returned
MODE
SENSE
data. An Allocation Length of 0 indicates that the drive returns no
MODE SENSE
data. This is not considered an error and the drive returns
GOOD
status.