IBM IC35L036UWDY10 Hard Drive Specifications - Page 97

Mode Parameter List, 8.1.1 Header

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1 1 Report saved value. The drive returns the saved value for the page code specified. Saved values are one of following: ! the values saved as a result of MODE SELECT command ! identical to the default values ! zero when the parameters are not supported The Page Length byte value of each page returned by the drive indicates up to which fields are supported on that page. Page Code: This field specifies which page or pages to return. Page code usage is defined in the figure below. Page Code Description 00h - 1Ch Return specific page 3Fh Return all available pages Figure 81. Page Code Usage Subpage Code: This field specifies the subpage to return. Subpages are supported for Port Control Mode Page. For other Mode Pages this field should be zero. 8.8.1 Mode Parameter List The mode parameter list contains a header followed by zero or more block descriptors followed by zero or more variable length pages. 8.8.1.1 Header The six-byte command descriptor block header is defined below. Mode parameter header (6) Byte 7 0 1 2 WP 3 Bit 6 5 4 3 2 1 0 Mode Data Length Medium Type = 0 Reserved = 0 Block Descriptor Length (= 0 or 8) Figure 82. Mode parameter header (6) The ten-byte command descriptor block header is defined below. Ultrastar 146Z10 hard disk drive specifications 81

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1 1
Report saved value.
The drive returns the saved value for the page code specified. Saved
values are one of following:
!
the values saved as a result of MODE SELECT command
!
identical to the default values
!
zero when the parameters are not supported
The Page Length byte value of each page returned by the drive indicates up to which fields are
supported on that page.
Page Code:
This field specifies which page or pages to return.
Page code usage is defined in the figure
below.
Return specific page
Return all available pages
00h - 1Ch
3Fh
Description
Page Code
Figure 81. Page Code Usage
Subpage Code:
This field specifies the subpage to return. Subpages are supported for Port Control
Mode Page.
For other Mode Pages this field should be zero.
8.8.1 Mode Parameter List
The mode parameter list contains a header followed by zero or more block descriptors followed by zero or
more variable length pages.
8.8.1.1 Header
The six-byte command descriptor block header is defined below.
Mode parameter header (6)
Block Descriptor Length (= 0 or 8)
3
Reserved = 0
WP
2
Medium Type = 0
1
Mode Data Length
0
0
1
2
3
4
5
6
7
Bit
Byte
Figure 82. Mode parameter header (6)
The ten-byte command descriptor block header is defined below
.
Ultrastar 146Z10 hard disk drive specifications
81