RW_BIT
RW_BIT(2, "01"), RW_BIT(1, "01"), RW_BIT(0, "01"));
RW_BIT(2, " |"), RW_BIT(1, " |"), RW_BIT(0, " |"));
"WRITE_LOCKED", RW_BIT(1, " |"), RW_BIT(0, " |"));
"WRITE_WANTED", RW_BIT(0, " |"));