IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - Enable;Disable Delayed Write (Fah: Vendor Specific); Figure 80. Enable;Disable Delayed Write Command (Fah)

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--00000V00000
ERRIDXCOR
DRQ
DSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
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 11.13, "Delayed Write function (vendor specific)" on
page 100.
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
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
118