Exception Handling; Phase Sequencing - Tandberg Data SLR7-140 PROGRAMMER Manual

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Tandberg Data

29.3. Exception Handling

If a miscompare is detected (CMP bit of one), the VERIFY
command will be terminated with CHECK CONDITION status.
The Error Code
. The Valid (VADD) bit in the sense data list
OPERATION
will be set to one. If the FIX is set to one, the
Information Bytes in the sense data will be set to the
difference (residue) between the Verification Length and
the actual number of blocks successfully transferred. If
the FIX bit is set to zero, the Information Bytes in the
sense data will
between the Verification Length and the actual number of
bytes successfully
terminated, the tape will be logically positioned after
the last block transferred (end-of-partition side).
Note, when a miscompare is detected, the Drive will not
terminate the data transfer immediately but complete the
current data burst. This means that when a miscompare
error has been signaled to the Initiator, the actual
byte(s) in error
transferred burst.
For further exception
Exception Handling for the READ command.

29.4. 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>
This sequence will be used if the CMP bit is zero (no
data transfer ). The sequence will also be used when an
error is detected during the initial part of the VERIFY
command or when the Verification Length is zero.
:= <initiator-part> <message-out> <command> {<disconnect>
<reconnect> <data-in>} <completed>
This sequence will be used when the VERIFY command with
CMP bit set terminates with GOOD STATUS.
The Drive will first disconnect when the CDB has been
transferred.
:= <initiator-part> <message-out> <command>{<disconnect> <reconnect>
<data-in>}<disconnect> <reconnect> <completed>
This sequence will be used when an error is encountered
during the VERIFY operation.
:= <initiator-part> <message-out> <command> {<data-in>} <completed>
This sequence will be used when the VERIFY command is
executed and the Initiator does not allow disconnection.
is transferred to the drive.
29-3 Tandberg SLR Product Line SCSI Functional Specifications
will be set to
be set to the
transferred.
is (are) somewhere
handling,
M
ISCOMPARE DURING
difference (residue)
When the command
in the
see the section
Verify
VERIFY
has
last
on