ELINK_ID_PORT
if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) {
if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) {
outb(ELINK_ID_PORT, 0xff);
outb(ELINK_ID_PORT, 0x00);
outb(ELINK_ID_PORT, 0x00);