NAME
        NextConductor -- return the next conductor on realtime.library's
                         conductor list. (V37)

   SYNOPSIS
        conductor = NextConductor(previousConductor);
        D0                        A0

        struct conductor *nextconductor(struct conductor *);

   FUNCTION
        Returns the next conductor on realtime.library's conductor list. If
        previousConductor is NULL, returns the first conductor in the list.
        Returns NULL if no more conductors.

        The conductor list must be locked before calling this function. This
        is done by calling LockRealTime(RT_CONDUCTORS).

   INPUTS
        previousConductor - previous conductor or NULL to get first conductor.

   RESULTS
        conductor - next conductor on the list, or NULL if no more.

   SEE ALSO
        findconductor(), lockrealtime(), unlockrealtime()