Write Extended (2A) - IBM DDRS-39130 - Ultrastar 9.1 GB Hard Drive Specifications

7.36 WRITE EXTENDED (2A)

Byte
7 6
0
1 LUN
2 (MSB)
3
4
5
6
7 (MSB)
8
9 VU = 0
Figure 118. WRITE E X T E N D E D (2A)
The WRITE EXTENDED command requests that the file write the data transferred from the initiator.
This command is processed like the standard WRITE 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 Disable Page Out function is not supported, however, D P O bit set to 1 is not rejected and
ignored internally.
FUA Force unit access. A F U A bit of 1 indicates that the Target must write the data to the media
before returning Good Status. A F U A bit of 0 indicates the Target may return Good Status prior
to writing the data to the media.
RelAdr Relative Block Address is not supported. Must be set to zero.
152
O E M Spec. of DDRS-3xxxx
Bit
5 4 3
Command Code = 2Ah
DPO FUA
Logical Block Address
Reserved = 0
Transfer Length
Reserved = 0
2 1 0
Reserved RelAdr
= 0 = 0
(LSB)
(LSB)
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