uba_attach
uba_attach(&sc->uv_sc, UIOPAGE(sa->sa_type == NEX_UBA1));
uba_attach(&sc->uv_sc, QIOPAGE);
uba_attach(&sc->uv_sc, UMEM(sa,ubaddr) + (UBAPAGES * VAX_NBPG));
uba_attach(&sc->uv_sc, UIOPAGE);
uba_attach(sc, BUA(sc->uh_uba)->bn_biic.bi_sadr + UBAPAGES * VAX_NBPG);
void uba_attach(struct uba_softc *, unsigned long);