Specifications

Operating System Routines

EXE$ABORTIO

This interrupt causes I/O postprocessing to occur before the remaining

instructions in EXE$ABORTIO are executed.

When all I/O postprocessing has been completed, EXE$ABORTIO regains control

and completes the I/O operation as follows:

• Lowers IPL to zero

• Issues the RET instruction that restores the original access mode of the

caller of the $QIO system service and returns control to the system service

dispatcher

EXE$ABORTIO returns in R0 the ﬁnal status code saved when the exit routine

was called. Any ASTs speciﬁed when the I/O request was issued will not be

delivered, and any event ﬂags requested will not be set.

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