IO_REGION_START
if (!request_region(IO_REGION_START, IO_REGION_LENGTH, "LNV-WKS")) {
release_region(IO_REGION_START, IO_REGION_LENGTH);
release_region(IO_REGION_START, IO_REGION_LENGTH);
release_region(IO_REGION_START, IO_REGION_LENGTH);
release_region(IO_REGION_START, IO_REGION_LENGTH);