grfdev_attach(sc, rb_init, grf, &rbox_grfsw);
rbox_intio_attach(parent, self, aux)	struct device *parent, *self;	void *aux;{	struct grfdev_softc *sc = (struct grfdev_softc *)self;	caddr_t grf;	grf = (caddr_t)IIOV(GRFIADDR);	sc->sc_scode = -1;	/* XXX internal i/o */	grfdev_attach(sc, rb_init, grf, &rbox_grfsw);}