ICP_EDOOR_EN
bus_space_write_1(dpmemt, dpmemh, ICP_EDOOR_EN,
bus_space_read_1(dpmemt, dpmemh, ICP_EDOOR_EN) | 4);
bus_space_write_1(icp->icp_dpmemt, icp->icp_dpmemh, ICP_EDOOR_EN,
ICP_EDOOR_EN) & ~4);