IBM IC35L020 Hard Drive Specifications - Page 136

NOP 00h, Command Block Output

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15.10 NOP (00h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature V V V V V V V V Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 0 0 0 0 0 0 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Initial Value Sector Number Initial Value Cylinder Low Initial Value Cylinder High Initial Value Device/Head Initial Value Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 - - 0 -V Figure 88. NOP Command (00h) This command always fails with an error. The device responds with command aborted. Output parameters to the device Feature Subcommand code 00H Abort any outstanding queue 01H-FFH Not abort any outstanding queue The value of Sector Count, Sector Number, Cylinder High/Low, Device/Head set by host is not changed. Deskstar 60 GXP Hard disk drive specification 122

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15.10 NOP (00h)
see below
Status
0 0 0 0 0 0 0 0
Command
Initial Value
Device/Head
1 - 1 D - - - -
Device/Head
Initial Value
Cylinder High
- - - - - - - -
Cylinder High
Initial Value
Cylinder Low
- - - - - - - -
Cylinder Low
Initial Value
Sector Number
- - - - - - - -
Sector Number
Initial Value
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
V
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 88. NOP Command (00h)
This command always fails with an error. The device responds with command aborted.
Output parameters to the device
Feature
Subcommand code
00H
Abort any outstanding queue
01H–FFH
Not abort any outstanding queue
The value of Sector Count, Sector Number, Cylinder High/Low, Device/Head set by host is not changed.
Deskstar
60 GXP Hard disk drive specification
122