NAME
	SetExcept -- define certain signals to cause exceptions

   SYNOPSIS
	oldSignals = SetExcept(newSignals, signalMask)
	D0		       D0	   D1

	ULONG SetExcept(ULONG,ULONG);

   FUNCTION
	This function defines which of the task's signals will cause a
	private task exception.  When any of the signals occurs the task's
	exception handler will be dispatched.  If the signal occurred prior
	to calling SetExcept, the exception will happen immediately.

	The user function pointed to by the task's tc_ExceptCode gets
	called as:

	    newExcptSet = <exceptCode>(signals, exceptData),SysBase
	    D0			       D0	A1	    A6

	    signals - The set of signals that caused this exception.  These
		Signals have been disabled from the current set of signals
		that can cause an exception.

	    exceptData - A copy of the task structure tc_ExceptData field.

	    newExcptSet - The set of signals in NewExceptSet will be re-
		enabled for exception generation.  Usually this will be the
		same as the Signals that caused the exception.

   INPUTS
	newSignals - the new values for the signals specified in
		signalMask.
	signalMask - the set of signals to be effected

   RESULTS
	oldSignals - the prior exception signals

   EXAMPLE
	Get the current state of all exception signals:
	    SetExcept(0,0)
	Change a few exception signals:
	    SetExcept($1374,$1074)

   SEE ALSO
	Signal(), SetSignal()