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researchv10 Dan Cross

.pa 1
.he 'INTR (II)'3/15/72'INTR (II)'
.ti 0
NAME		intr  --  set interrupt handling
.sp
.ti 0
SYNOPSIS	sys intr; arg  / intr = 27.
.sp
.ti 0
DESCRIPTION	When arg___ is 0,
interrupts (ASCII DELETE) are ignored.
When arg___ is 1,
interrupts cause their normal result, that is, force an exit____.
When arg___ is a location within the program, control is
transferred to that location when an interrupt occurs.
.sp
After an interrupt is caught, it is possible to resume
execution by means of an rti___ instruction; however, great
care must be exercised, since
all I/O is terminated abruptly upon an interrupt.
In particular, reads of the typewriter tend to return
with 0 characters read, thus simulating an end of file.
.sp
.ti 0
SEE ALSO	quit(II)
.sp
.ti 0
DIAGNOSTICS	--
.sp
.ti 0
BUGS		--

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