Mode Parameter List; Figure 81. Page Code Usage; Figure 82. Mode Parameter Header - IBM IC35L036UWDY10 - Ultrastar 36.7 GB Hard Drive Specifications

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

Figure 82. Mode parameter header (6)

The ten-byte command descriptor block header is defined below.
Bit
6 5 4
Mode Data Length
Medium Type = 0
Reserved = 0
Block Descriptor Length (= 0 or 8)
Ultrastar 146Z10 hard disk drive specifications
3 2 1
81
0