Mode parameter header – HP Q153090901 User Manual
Page 74
Commands
74
•
18h
(FC drives only)
18h
(SCSI drives only)
“SCSI LUN Control mode page” on page 84
•
19h
(FC drives only)
19h
(SCSI drives only)
“SCSI Port Control Mode page” on page 87
•
1Ch “Information Exceptions mode page” on page 91
•
3Ch “Device Time Mode Page” on page 92
•
3Fh
OBDR FW variants only:
“CD-ROM Emulation/Disaster Recovery mode page” on
•
Return all pages (page 3Fh) — for
MODE SENSE
only
Mode parameter header
The Mode Parameter header must always be sent at the start of Mode Select data. It is always
returned at the start of Mode Sense data.
6-byte header
The 6-byte Mode Parameter header has the following format:
10-byte header
The 10-byte Mode Parameter header has the following format:
7
6
5
4
3
2
1
0
0
Mode Data Length
1
Medium Type [00h or 01h if WORM media is loaded or 80h if in CD-ROM mode]
2
WP
Buffered Mode [001b]
Speed (0)
3
Block Descriptor Length
7
6
5
4
3
2
1
0
0
(MSB)
Mode Data Length
1
(LSB)
2
Medium Type [00h or 01h if WORM media is loaded or 80h if in CD-ROM mode]
3
WP
Buffered Mode [001b]
Speed (0)
4
Reserved (0)
5
6
(MSB)
Block Descriptor Length
7
(LSB)