13.3 Enable/Disable Delayed Write (FAh: vendor specific)
see below
Status
1 1 1 1 1 0 1 0
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see below
Error
V V V V V V V V
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input Registers
Command Block Output Registers
V
-
0
-
-
0
0
0
0
0
V
0
0
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 80. Enable/Disable Delayed Write command (FAh)
The Enable/Disable Delayed Write command sets if the Delayed Write function is enabled or disabled.
Delayed Write function is enabled or disabled according to the feature register's value.
Even if the Delayed Write function is enabled by this command, Delayed Write does not work when the
Write Cache function is disabled.
For details for this function refer to section 11.14, "Delayed Write Function (Vendor Specific)" on page 98.
Output parameters to the device
Feature
This is the destination code for this command.
07H
is the Enable Delayed Write function
87H
is the Disable Delayed Write function
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
116
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