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10.48 Write DMA FUA Ext (3Dh)
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
Command
0
Error Register
7
6
5
4
CRC
UNC
0
IDN
V
0
0
V
Table 180 Write DMA FUA Ext Command (3Dh)
The Write DMA FUA Ext command transfers one or more sectors of data from the host to the device, and then
the data is written to the disk media. This command provides the same function as the Write DMA Ext
command except that the transferred data shall be written to the media before the ending status for this
command is reported also when write caching is enabled.
The sectors of data are transferred through the Data Register 16 bits at a time.
The host initializes a slave-DMA channel prior to issuing the command. Data transfers are qualified by DMARQ
and are performed by the slave-DMA channel. The device issues only one interrupt per command to indicate
that data transfer has terminated and status is available.
If an unrecoverable error occurs, the write will be terminated at the failing sector.
HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
6
5
4
3
2
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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
-
D
-
-
-
0
1
1
1
1
0
3
2
1
0
0
ABT
T0N
AMN
0
V
0
0
Command Block Input Registers
0
Register
-
Data Low
-
Data High
-
Error
-
V
HOB=0
Sector Count
V
HOB=1
V
HOB=0
Sector Number
V
HOB=1
V
HOB=0
Cylinder Low
V
HOB=1
V
HOB=0
Cylinder High
V
HOB=1
-
Device/Head
1
Status
Status Register
7
6
5
BSY
RDY
DF
0
V
0
239
7
6
5
4
3
2
-
-
-
-
-
-
-
-
-
-
-
-
...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
-
-
-
-
-
-
...See Below...
4
3
2
1
DSC
DRQ
COR
IDX
V
-
0
-
1
0
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
-
-
0
ERR
V
- Quick Links:
- Data Sheet
- Jumper Settings(Pata Model)
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