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10.25 Read Sector(s) Ext (24h)
Command Block Output Registers
Register
7
Data Low
-
Data High
-
Current
-
Feature
Previous
-
Current
V
Sector Count
Previous
V
Current
V
Sector
Number
Previous
V
Current
V
Cylinder Low
Previous
V
Current
V
Cylinder High
Previous
V
Device/Head
1
Command
0
Error Register
7
6
5
4
CRC
UNC
0
IDN
0
0
0
V
Table 134 Read Sector(s) Ext Command (24h)
The Read Sector(s) Ext command reads from 1 to 65,536 sectors of data from disk media, and then transfers
the data from the device to the host.
The sectors are transferred through the Data Register 16 bits at a time.
If an uncorrectable error occurs, the read will be terminated at the failing sector.
HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
1
1
D
-
-
-
-
0
1
0
0
1
0
0
3
2
1
0
0
ABT
T0N
AMN
0
V
0
0
177
Command Block Input Registers
Register
7
Data Low
-
Data High
-
Error
HOB=0
-
Sector Count
HOB=1
-
HOB=0
V
Sector
Number
HOB=1
V
HOB=0
V
Cylinder Low
HOB=1
V
HOB=0
V
Cylinder High
HOB=1
V
Device/Head
-
Status
Status Register
7
6
5
4
BSY
RDY
DF
DSC
0
V
0
V
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
...See Below...
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
-
-
-
-
-
-
-
...See Below...
3
2
1
0
DRQ
COR
IDX
ERR
-
0
-
V
- Quick Links:
- Data Sheet
- Jumper Settings(Pata Model)
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