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()