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openpower.foundation/content/specifications/isa.md

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Instruction Set Architecture isa false
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2021-08-30 false

The Power Instruction Set Architecture (ISA) Version is a specification that describes the architecture used for the IBM POWER processor.
It defines the instructions the processors execute.
It is comprised of three 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.
  • Book II
    • Power ISA Virtual Environment Architecture, defines the storage model and related instructions and facilities available to the application programmer.
  • Book III
    • Power ISA Operating Environment Architecture, defines the supervisor instructions and related facilities.