ONEWIRE_ROM_FAMILY_TYPE
famname = onewire_famname(ONEWIRE_ROM_FAMILY_TYPE(oa->oa_rom));
printf("family 0x%02x", ONEWIRE_ROM_FAMILY_TYPE(oa->oa_rom));
if (ONEWIRE_ROM_FAMILY_TYPE(oa->oa_rom) == om->om_type)