Power ISA is a reduced instruction set computer (RISC) instruction set architecture (ISA) currently developed by the OpenPOWER Foundation, led by IBM. It was originally developed by IBM and the now-defunct Power.org industry group.

This document defines the PowerPC User Instruction Set Architecture. It covers the base instruction set and related facilities available to the application pro-grammer. Other related documents define the PowerPC Virtual Environment Architecture, the PowerPC Operating Environment Architecture, and PowerPC Implementa-tion Features.

PowerPC (with the backronym Performance Optimization With Enhanced RISC – Performance Computing, sometimes abbreviated as PPC) is a reduced instruction set computer (RISC) instruction set architecture (ISA) created by the 1991 Apple–IBM–Motorola alliance, known as …

After two years of development, the resulting PowerPC ISA was introduced in 1993. A modified version of the RSC architecture, PowerPC added single-precision floating point instructions and general register-to-register multiply and divide instructions, and removed some POWER features.

The Power Instruction Set Architecture (ISA) Version is a specification that describes the architecture used by POWER processors. It defines the instructions the processor executes. It is comprised of three books and a set of appendices.

This document defines Power ISA Version 2.03. It is comprised of five books and a set of appendices. Book I, Power ISA User Instruction Set Architecture, covers the base instruction set and related facilities available to the application programmer. It includes five new chapters derived from APU function, including the

Power ISA Version 3.0C takes the first step in re-intro-ducing optionality into the architecture as the Power ISA moves to an “open” model governed by the Open-POWER Foundation. Material later in the preface iden - tifies compliancy subsets of the architecture and the optional features which they comprise.

Dec 27, 2024 · Power ISA is the specification for how Power architecture processors are to behave. It dictates the machine instructions available, and exactly how they are to process given data. There are two primary versions of the Power ISA that are of interest to PowerNV platforms: Version 2.07 (POWER8 / POWER8E) Version 3.0B

Aug 18, 2018 · PowerPC was the outcome of the AIM Alliance founded in 1991: a trio that consisted of unlikely partners, Apple and IBM—who otherwise were competitors—and Motorola, who had a strong relationship with Apple.

It covers the storage model and related instructions and facili-ties available to the application programmer, and the Time Base as seen by the application programmer. Other related documents define the PowerPC User Instruction Set Architecture, the PowerPC Operating Environment Architecture, and PowerPC Implementa-tion Features.