Space Forward After Write; Phase Sequencing - Tandberg Data SLR7-140 PROGRAMMER Manual

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Tandberg Data

28.4.10. Space Forward After Write

If a SPACE forward command issued when the Drive is in
WRITE mode (i.e. immediately after a write operation,
see section 4.5. Command Sequencing for details), the
Drive terminates
CONDITION status. The Error Code is set to either E
or E
DATA DETECTED
whether the tape is positioned before or after LEW. The
Drive continues to be in WRITE mode.
If the space operation
direction however, the Drive enters NAVIGATE mode and
the SPACE command is executed.

27.5. Phase Sequencing

In this section the possible SCSI-bus phase sequences
during execution of the command are described. Section
3.2.1 has more details about the generic phases in the
brackets.
:= <initiator-part> <message-out> <command> <disconnect> <reconnect>
<completed>
The Drive will
transferred. The Drive will reconnect when the space
operation has completed (or an error has been detected).
:= <initiator-part> <message-out> <command> <completed>
This sequence will be used when disconnection is not
allowed.
27-7 Tandberg SLR Product Line SCSI Functional Specifications
the command immediately
- -
ND OF DATA DETECTED AFTER
requested
disconnect when
Space
with CHECK
-
ND
LEW depending on
is in the reverse
the CDB has been
-
OF