control to an internal routine for processing. External interruptions
are
i
format of the
CLR
SET,
CLR
is an optional statement label.
____
specifies the address in your program of the routine to be
given control when an external interruption occurs.
specifies that
interruptions.
you no longer want to trap external
1. External interruptions (other than timer interruptions) normally
place your virtual machine in the debug environment.
2.
virtual interruptions, except multiplexer, are disabled. If you
are using the
3.
control, register 1 points to a save area in the format:
64
96
_Hex_
o
must return control to the address in register 14.
4. If you issue a
interruptions while the
interrupted while the other is running. If your exits depend on
data in static areas, results may be undesirable.