Mode Sense (6) / (10) Command (1Ah / 5Ah) - Quantum DLT 8000 Product Manual

5.10 MODE SENSE (6) / (10) Command (1Ah / 5Ah)

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.
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.
Bit 7
Byte
0
1 Logical Unit Number
2 PC
3
4
5 Unused
Figure 5–51 MODE SENSE (6) Command Descriptor Block — Data Format
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).
6 5
Operation Code (1Ah)
Rsv'd
Allocation Length
Quantum DLT 8000 Tape System
4 3
DBD
Page Code
Reserved
Reserved
SCSI Commands
2 1
Reserved
Flag
0
Link
5-105