instructions n b -> n>>b SHR -> Shifts the byte n by b bits to the right SHRw -> Shifts the word n by b bits to the right SHRx -> Shifts the byte x by b bits to the right SHRxw -> Shifts the word xw by b bits to the right SHRy -> Shifts the byte y by b bits to the right SHRyw -> Shifts the word yw by b bits to the right SHRxy -> Shifts the bytes x and y by b bits to the right SHRxyw -> Shifts the words xw and yw by b bits to the right