QBASIZE
sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */
mapp = (int *)vax_map_physmem(QBAMAP, QBASIZE/VAX_NBPG);
paddr < QBAMEM + QBASIZE - 8192;
vax_unmap_physmem((vaddr_t)mapp, QBASIZE/VAX_NBPG);