Текст страницы
Read Verify Sector(s) Ext (42h)
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 Low
-
-
-
-
-
-
-
-
Data Low
-
-
-
-
-
-
-
-
Data High
-
-
-
-
-
-
-
-
Data High
-
-
-
-
-
-
-
-
Current
-
-
-
-
-
-
-
-
Feature
Error
…See Below…
Previous
-
-
-
-
-
-
-
-
Current
V
V
V
V
V
V
V
V
HOB=0
-
-
-
-
-
-
-
-
Sector Count
Sector Count
Previous
V
V
V
V
V
V
V
V
HOB=1
-
-
-
-
-
-
-
-
HOB=0
V
V
V
V
V
V
V
V
Sector Number
Current
V
V
V
V
V
V
V
V
Sector
Number
Previous
V
V
V
V
V
V
V
V
HOB=1
V
V
V
V
V
V
V
V
Current
V
V
V
V
V
V
V
V
HOB=0
V
V
V
V
V
V
V
V
Cylinder Low
Cylinder Low
Previous
V
V
V
V
V
V
V
V
HOB=1
V
V
V
V
V
V
V
V
Current
V
V
V
V
V
V
V
V
HOB=0
V
V
V
V
V
V
V
V
Cylinder High
Cylinder High
Previous
V
V
V
V
V
V
V
V
HOB=1
V
V
V
V
V
V
V
V
Device/Head
1
1
1
D
-
-
-
-
Device/Head
-
-
-
-
-
-
-
-
Command
0
0
1
0
0
0
1
0
Status
…See Below…
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY
RDY
DF
DSC DRQ COR
IDX
ERR
0
V
0
V
0
V
0
0
0
V
0
V
-
0
-
V
Table 194 Read Verify Sector(s) Ext Command (42h)
The Read Verify Sector(s) Ext verifies one or more sectors on the device. No data is transferred to the host.
The difference between the Read Sector(s) Ext command and the Read Verify Sector(s) Ext command is whether
the data is transferred to the host or not.
If an uncorrectable error occurs, the Read Verify Sector(s) Ext will be terminated at the failing sector.
Output Parameters To The Device
Sector Count Current
The number of continuous sectors to be verified low order, bits (7:0).
Sector Count Previous
The number of continuous sectors to be verified high order, bits (15:8). If zero is
specified in the Sector Count register, then 65,536 sectors will be verified.
Sector Number Current
LBA (7:0).
Sector Number Previous
LBA (31:24)
Cylinder Low Current
LBA (15:8).
Cylinder Low Previous
LBA (39:32).
Cylinder High Current
LBA (23:16).
Cylinder High Previous
LBA (47:40).
Input Parameters From The Device
Sector Number (HOB=0)
LBA (7:0) of the address of the first unrecoverable error.
Sector Number (HOB=1)
LBA (31:24) of the address of the first unrecoverable error.
Cylinder Low (HOB=0)
LBA (15:8) of the address of the first unrecoverable error.
Cylinder Low (HOB=1)
LBA (39:32) of the address of the first unrecoverable error.
Cylinder High (HOB=0)
LBA (23:16) of the address of the first unrecoverable error.
Cylinder High (HOB=1)
LBA (47:40) of the address of the first unrecoverable error.
237
Western Digital Ultrastar DC HC310 SATA Product Manual