Linked Task Complete Message: X'0A'(T→I); Target Reset Message: X'0C' (I→T); Abort Task Message: X'0D' (I→T); Clear Task Set Message: X'0E'(I→T) - Fujitsu MBA3073 SERIES Technical Manual

2.3.10 LINKED TASK COMPLETE message: X'0A'(T→I)
The LINKED TASK COMPLETE message indicates that the link command (with flag bit 0) has
been executed normally and that the valid status byte has been posted to the INIT. When the INIT
receives this message, it shall update both the current pointer and Saved pointer to the initial
values of the next linked command.
2.3.11 TARGET RESET message: X'0C' (I→T)
The TARGET RESET message requests the TARG to clear all of the currently executing or
queued I/O operations (or commands). The TARG shall clear both the I/O operations initiated by
the INIT of this message source and I/O operations of all INITs. When the TARG receives this
message, it shall enter the BUS FREE phase immediately (regardless of the subsequent ATN
signal status).
2.3.12 ABORT TASK message: X'0D' (I→T)
When the TARG receives this message normally, it enters the BUS FREE phase. The TARG
clears the current I/O operation and stops its current execution. The medium contents may have
been modified before the execution is aborted. In either case, the hold status or data of the I/O
operation is cleared. No status or end message is sent to the INIT. This message does not affect
on the held status, data, and commands of the I/O operations which are being executed or queued
by another unit. Also, this message does not abort another I/O operation which is queued in the
INIT of this message source.
The system environment and conditions previously established by the MODE SELECT parameter
are not changed by this message.
2.3.13 CLEAR TASK SET message: X'0E'(I→T)
When the TARG receives the CLEAR TASK SET message, it enters the BUS FREE phase. The
TARG operates in the similar way as when it receives a series of ABORT TASK SET messages
from each INIT. This message clears all I/O operations currently being executed or queued in the
specified logical unit. The medium contents may have been modified before the execution is
aborted. All status and data held in all INITs are cleared. No status or message is sent to the INIT.
If the I/O operations of INITs, which differ from the INIT of this message source, are cleared, a
UNIT ATTENTION condition is generated for those INITs. When the UNIT ATTENTION
condition is reported, the Sense data indicates the COMMANDS CLEARED BY ANOTHER
INITIATOR [=2F-00].
The system environment and conditions previously established by the MODE SELECT parameter
are not changed by this message.
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