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Since the IDD does not support the reporting function of exception condition,
the IDD disregards the specification in this bit.
e.
DQue (disable queuing)
This bit specifies whether the IDD will execute processing of tagged
commands or not.
"1": The IDD prohibits tagged queuing processing. The IDD clears queued
"0": The IDD permits tagged queuing processing.
f.
QErr (queue error management)
This field controls processing of commands queued after a sense hold state is
canceled when the IDD is in the sense hold state.
Value
00b
The IDD, when it has been in any one of various sense hold states, then that sense
hold state is cleared, continues executing the commands which are queued by
normal methods.
01b
The IDD, when it has been in any one of various sense hold states, then that sense
hold state is cleared, clears the commands which are queued. At this time, the IDD
generates a UNIT ATTENTION condition (UNIT ATTENTION [=6] / Command
Cleared by Another Initiator [=2F-00]) for each of the INITs that issued the
commands which were cleared.
10b
Reserved
11b
The IDD, when it has been in any one of various sense hold states, then that sense
hold state is cleared, clears the commands which are queued by abnormal
terminated INIT.
The IDD is not supported "11b" specified in this field. If "11b" or "10b" is
specified in this field, the IDD reports a CHECK CONDITION status
(ILLEGAL REQUEST [=5] / Invalid parameter in list [=26-00]).
Specifying "01b" alone is possible, but the IDD would not function.
C141-C012
commands and generates a UNIT ATTENTION condition (Command
cleared by another initiator [=2F-00]) for each of the INITs that issued
the commands which were cleared. After that, the when a QUEUE TAG
message is received, it is rejected with a MESSAGE REJECT message
and executed as an untagged command.
Table 4.24 QErr
Description
4.1 Control/Sense Commands
4-55
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