dz_regs
dz_regs = vax_map_physmem(va->va_paddr, 1);
sc->sc_ioh = dz_regs;
dz_regs = iospace;
dz = (void *)dz_regs;
dz = (void*)dz_regs;
static vaddr_t dz_regs; /* Used for console */
struct dz_regs sc_dr; /* reg pointers */