containing the lowest memory byte addresses to supervisor level. 5.2. Machine-level CSRs Number Privilege Name Description 0 0 0 0 0 0 .J >- O. 260 220 D B B ISO D J 140 m m I00 _ so 6O w J o 20 I0 8 6 i 2.5 5 \ \ O J f(x) = 0 if S-mode is not