IBM RISC System/6000 processor architecture

This paper describes the hardware architecture of the IBM RISC System/6000* processor, which combines basic RISC principles with a partitioning of registers by function into multiple ALUs. This allows a high degree of parallelism in execution and permits a compiler to generate highly optimized code to manage the interaction among parallel functions. Floating-point arithmetic is integrated into the architecture, and floating-point performance is comparable to that of many vector processors.