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7. ATAPI Packet Command Specification
7.26. WRITE FILEMARK 10h
Bit
7
Byte
0
1
2
3
4
5
6
7
8
9
10
11
The WRITE FILEMARK command requests that the Device write a filemark or setmark to the current position.
WSmk: If this bit is set, the drive writes a Set-mark to tape instead of a File-mark.
Immed: If this bit is set, the drive returns status as soon as the Command Descriptor Block has been validated. An
Immediate bit of ZERO indicates that status will not be returned until the operation has completed.
A Transfer Length of one enables the writing of the filemark. A Transfer Length of zero can be also be used to
synchronize (flush) any buffered data.
If the Device encounters early-warning during WRITE FILEMARK operation, any buffered data or filemarks shall
be written to the medium, and a "Check Condition" will exist. If all buffered data, and filemarks are successfully
transferred to the medium, the Sense Key will be set to NO SENSE or RECOVERED ERROR, as appropriate.
In the case of an unrecovered write error, the Valid bit shall be set to one and the Information field shall be set to
the difference (residue) of the sum of the pending requested transfer lengths minus the actual number of blocks
and filemarks written. The value in the Information field may exceed the Transfer Length for the last command.
7-72
6
5
4
Operation Code (10h)
Reserved
3
2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SONY AIT-2 Turbo drive SDX-570V series Ver.1.0
WRITE FILEMARK
1
0
WSmk
Immed
Transfer
Length
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