rb_tdhead         600 dev/sbus/be.c  	bix = sc->sc_rb.rb_tdhead;
rb_tdhead         638 dev/sbus/be.c  	sc->sc_rb.rb_tdhead = bix;
rb_tdhead         472 dev/sbus/qe.c  	bix = sc->sc_rb.rb_tdhead;
rb_tdhead         512 dev/sbus/qe.c  	sc->sc_rb.rb_tdhead = bix;
rb_tdhead         436 dev/sbus/qec.c 	qr->rb_tdhead = qr->rb_tdtail = 0;
rb_tdhead          72 dev/sbus/qecvar.h 	int	rb_tdhead, rb_tdtail;