OPL_SIZE
if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &ioh))
bus_space_unmap(ia->ia_iot, ioh, OPL_SIZE);
ia->ia_io[0].ir_size = OPL_SIZE;