Write (10) (2Ah); Figure 170. Write - IBM IC35L036UWDY10 - Ultrastar 36.7 GB Hard Drive Specifications

8.41 WRITE (10) (2Ah)

Byte
7
0
1 Reserved = 0
2
(MSB)
|
5
6
(MSB
7
8
9 VU = 0

Figure 170. WRITE (10)

The WRITE (10) command requests that the drive write the data transferred from the initiator. This
command is processed like the WRITE (6) command except for the longer transfer length
! Transfer Length The number of contiguous blocks to be transferred. If the transfer length is zero, the
seek occurs, but no data is transferred. This condition is not considered an error.
! DPO A DPO (Disable Page Out) bit of one indicates that the data accessed by this command is to be
assigned the lowest priority for being written into or retained by the cache. A DPO bit of one overrides
any retention priority specified in the MODE SELECT Page 8 Caching Parameters. A DPO bit of zero
indicates that the priority is determined by the retention priority. The Initiator should set the DPO bit
when the blocks written by this command are not likely to be read in the near future.
! FUA Force unit access. A FUA bit of one indicates that the drive must write the data to the media
before returning GOOD status. A FUA bit of zero indicates that the drive may return GOOD status
prior to writing the data to the media.
! RelAdr Relative Block Address is not supported and must be set to zero.
Bit
6 5 4
Command Code = 2Ah
DPO
Logical Block Address
Reserved = 0
Transfer Length
Reserved = 0
Ultrastar 146Z10 hard disk drive specifications
3 2 1
FUA Reserved
FLAG
167
0
RelAdr
= 0
(LSB)
(LSB)
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