sc_rfirstintr    2120 dev/audio.c    			totdelta = t - sc->sc_rfirstintr - sc->sc_rblktime * sc->sc_rnintr;
sc_rfirstintr    2128 dev/audio.c    			sc->sc_rfirstintr = t;
sc_rfirstintr     144 dev/audiovar.h 	u_long	sc_rfirstintr;	/* first time we saw a rec interrupt */