HP C737990900 - Manual (Page 164)

164 Commands
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.