OEM MANUAL:K6602771
6 COMMAND DESCRIPTIONS
Revision: 2 / Date: 2002.12.19
Page: 186 / 313
Table 6-47 Notch and Partition Page (Page Code = CH) (cont
’
d)
3
Reserved
0
0
0
0
0
0
0
0
4
Maximum Number of Notches (MSB)
5
Maximum Number of Notches (LSB)
6
Active Notch (MSB)
7
Active Notch (LSB)
8
Starting Boundary (MSB)
|
11
Starting Boundary (LSB)
12
Ending Boundary (MSB)
|
15
Ending Boundary (LSB)
16
Pages Notched (MSB)
|
23
Pages Notched (LSB)
This page specifies the parameters for direct-access devices supporting a variable
number of blocks per cylinder. Each section of the drive with a different number
of blocks per cylinder is referred to as a Notch. Each Notch will span a set of
consecutive logical blocks on the logical drive. The Notches will not overlap, and
no logical block will be excluded from a Notch.
The ND (Notched Drive) bit specifies whether or not the drive is notched. A ND
bit of 0 indicates that the device is not notched and that all other parameters in
this page shall be returned as zero by the controller. A ND bit of 1 indicates that
the device is notched. For each supported active notch value, this page defines
the starting and ending boundaries of the notch.
In case of ND = 1, the following description for the Maximum Number of Notches,
Active Notch, Starting Boundary, Ending Boundary and Pages Notched is
applied.
The LPN (Logical or Physical Notch) bit specifies whether the Starting Boundary
and the Ending Boundary fields reported by the MODE SENSE command
indicates physical parameter(cylinder number and head number) or logical block
address.
MODE SELECT:(15h)