The PowerPC ArchitectureTM: 64-Bit Power vvith 32-Bit Compatibility
Chunyu Peng, T.A. Petersen, Ron Clark · 1995
This paper details the @-bit PowerPC Architecture specifrcation. It compares and contra@s the 32-bit subset specification against the fdl &-bit speci&atwn. Architecture, application, OS. and hardware implicatim of the 64-bit specificatbm are all explored in detail. In addition, 32- and M-bit compatibility and OS migration strategies are described. The PowerPC 62gM microprocessor implementaticm is used 11p a vehicle when examining the M-bir features. The 620’s MMU is described, and potential performance implications are discussed.