HP Q153090901 - Manual (Page 186)

Commands 186
WRITE FILEMARKS 10h
W RITE FILEMARKS causes the specified number of filemarks to be written beginning at the current
logical position on tape.
If the Immed bit is set, GOOD status may be reported and the marks left in the data buffer.
Otherwise, all buffered data and marks are written before status is reported.
If zero filemarks are to be written, the Immed bit must be zero. The drive writes any buffered data
and marks to tape before reporting. This is the recommended way for a host to flush the buffer.
Pre-execution checks:
Command descriptor block:
CDB fields:
Specific status:
Write Filemark sense is identical to status for the Write command.
Illegal Field Reservation Deferred Error Unit Attention
Media Access Media Write Diagnostic Status
7 6 5 4 3 2 1 0
0 Operation Code (10h)
1 Reserved (0) WSmk Immed
2 (MSB)
Number of Filemarks
4 (LSB)
5 Control
Immed 0 Status will not be returned until the operation is complete.
1 The drive returns GOOD status following the pre-execution checks (that is, before the
command starts executing).
WSmk 0 This bit is not supported and must be set to zero.
Number of
Marks
0 Zero is valid only when immediate report is disabled.
>0 This number of filemarks is to be written.