NAME
        Signal -- signal a task

   SYNOPSIS
        Signal(task, signals)
               A1    D0

        void Signal(struct task *,ulong);

   FUNCTION
        This function signals a task with the given signals.  If the task
        is currently waiting for one or more of these signals, it will be
        made ready and a reschedule will occur. If the task is not waiting
        for any of these signals, the signals will be posted to the task
        for possible later use. A signal may be sent to a task regardless
        of whether it is running, ready, or waiting.

        This function is considered "low level".  Its main purpose is to
        support multiple higher level functions like putmsg.

        This function is safe to call from interrupts.

   INPUT
        task - the task to be signalled
        signals - the signals to be sent

   SEE ALSO
        wait(), setsignal()