User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands

Mode Sense (6/10) (1Ah / 5Ah)

202 Quantum DX-Series Software Interface Guide

Mode Sense (6/10) (1Ah / 5Ah) 3

The MODE SENSE command allows the drive to report its media type,

and current, or changeable configuration parameters to the host. It is a

complementary command to MODE SELECT.

VENDORID QUANTUM

PRODUCTID DLT7000

The command descriptor block for the 6-byte MODE SENSE (1Ah) is

shown below. An illustration of the command descriptor block for the 10-

byte MODE SENSE (5Ah) follows on the next page.

Table 152 MODE

SENSE (6) Command

Descriptor Block -

Data Format

Bit/Byte 7 6 5 4 3 2 1 0

The 10-byte MODE SENSE command is required to request the Vendor-

Unique EEPROM parameter page due to the large amount of data that

parameter page contains. MODE SENSE (10) can be used to retrieve the

other pages as well. Note that MODE SENSE (10) returns descriptor data

in a different format than MODE SENSE (6).

Tech Tip: The specific page information is accepted and

retained, but not acted on during processing. The

EEPROM vendor unique page will always return:

Operation Code (1Ah)

Logical Unit Number Rsv’d DBD Reserved

PC Page Code

Reserved

Allocation Length

Unused Reserved

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