User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Mode Sense (6/10) (1Ah / 5Ah)
204 Quantum DX-Series Software Interface Guide
MODE SENSE may be either MODE SENSE (6) or MODE SENSE (10).
MODE SENSE (6) data contains a 4-byte header followed by one 8-byte
block descriptor, followed by zero or more variable length pages,
depending on the Page Code and Allocation Length.
MODE SENSE
Data Headers
3
The MODE SENSE (6) and MODE SENSE (10) headers are illustrated in
the following figures.
Table 155 MODE
SENSE (6) Data
Header - Data Format
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2
3
Page Code This field allows the host to select any specific page
or all of the pages supported by the drive.
Allocation
Length
This field specifies the number of bytes that the host
has allocated for returned MODE SENSE data. An
allocation length of zero indicates that the drive will
return no MODE SENSE data. This is not
considered an error, and GOOD status is returned.
Mode Sense Data Length
Media Type
WC Buffered Mode Speed (0)
Block Descriptor Length (08h)
Field Name Description