The rotate amount is a default rotate amount stored in a special data register, a predetermined set...http://www.google.com/patents/US5634065?utm_source=gb-gplus-sharePatent US5634065 - Data processing apparatusAdvanced Patent SearchPublication numberUS5634065 APublication typeGrantApplication numberUS 08/475,134Publication dateMay 27, 1997Filing dateJun 7, 1995Priority dateNov 30, 1993Fee statusP