Message Reject Message: X'07'(I T); No Operation Message: X'08' (I T); Message Parity Error Message: X'09' (I T) - Fujitsu MAN3184 SERIES Specifications

TARGET RESET message: Clears all I/O operations of all INITs existing on all LUNs of
the TARG.
CLEAR TASK SET message: Clears all I/O operations of all INITs existing on a specific
LUN.
ABORT TASK SET message: Clears all I/O operations of a specific INIT existing on a
specific LUN.
ABORT TASK message: Clears a single I/O operation only.
2.3.7

MESSAGE REJECT message: X'07'(I T)

The MESSAGE REJECT message indicates that the recently received message or message bytes
are inappropriate or has not been implemented.
When the INIT sends this message, to allow the TARG to identify the rejected message, it shall
assert the ATN signal before negating the ACK signal associated when the TARG received a
message to be rejected in the MESSAGE IN phase. If the TARG receives this message anytime
except when it responds to the ATN signal, it shall reject this message.
When the TARG sends this message, the TARG shall enter the MESSAGE IN phase and send this
message after negating the ACK signal associated with the rejected message if it is received in the
MESSAGE OUT phase. This is required to allow the INIT to identify the rejected message.
Section 3.1 explains the IDD operation details when the INIT returns this message in response to
the message sent by the IDD.
2.3.8

NO OPERATION message: X'08' (I T)

The NO OPERATION message does not result in any operation. If the INIT has no valid
messages which can be sent in response to a send request from the TARG (in MESSAGE OUT
phase), the INIT sends this message to the TARG.
2.3.9

MESSAGE PARITY ERROR message: X'09' (I T)

The MESSAGE PARITY ERROR message notifies the TARG that a parity error has been
detected in the message byte recently received by the INIT.
To allow the TARG to identify the message having the parity error, the INIT shall assert the ATN
signal, generate an ATTENTION condition, and send this message first. Then, the INIT shall
negate the ACK signal associated with the message which indicates a parity error in the
MESSAGE IN phase.
Section 3.1 explains the IDD operation details when the INIT returns this message in response to
the message sent by the IDD.
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