Nop Command - Hitachi T7K250 - Deskstar - Hard Drive Specifications

12.12 NOP (00h)
Table 83: NOP Command (00h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0
This command always fails with an error. The device responds with command aborted.
Output parameters to the device
Feature
001H
01H-FFH
The value of Sector Count, Sector Number, Cylinder High/Low, Device/Head set by host is not changed.
7 6 5 4 3 2 1 0
- - - - - - - -
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
0 0 0 0 0 0 0 0
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
Subcommand code
Abort any outstanding queue
Do not abort any outstanding queue
Deskstar T7K250 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0 7 6 5
BSY RDY DF DSC DRQ
0 0 0 0
139
7 6 5 4 3 2 1 0
- - - - - - - -
see below
Initial value
Initial value
Initial value
Initial value
Initial value
see below
Status Register
4 3 2 1
COR IDX
- - 0 -
0
ERR
V