Deskstar T7K250 Hard Disk Drive Specification
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12.12 NOP (00h)
Table 83: NOP Command (00h)
This command always fails with an error. The device responds with command aborted.
Output parameters to the device
Feature Subcommand code
001H Abort any outstanding queue
01H-FFH Do not abort any outstanding queue
The value of Sector Count, Sector Number, Cylinder High/Low, Device/Head set by host is not changed.
Command Block Output Registers Command Block Input Registers
Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0
Data - - - - - - - - Data - - - - - - - -
Feature V V V V V V V V Error see below
Sector Count - - - - - - - - Sector Count Initial value
Sector Number - - - - - - - - Sector Number Initial value
Cylinder Low - - - - - - - - Cylinder Low Initial value
Cylinder High - - - - - - - - Cylinder High Initial value
Device/Head 1 - 1 D - - - - Device/Head Initial value
Command 0 0 0 0 0 0 0 0 Status see below
Error Register Status Register
7654321 0 7654 3 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
00000V0 0 000- - 0- V
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