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Set Architectures CS 271 Computer Architecture Purdue University Fort Wayne 1 Chapter 5 Objectives Understand the factors involved in instruction set architecture design. Gain familiarity with memory addressing modes. Understand the concepts of instruction-level pipelining and its affect upon execution performance. 2 5.1 Introduction
Instruction Set Architecture (ISA) instruction set software hardware Processor I/O system Digital Design Circuit Design Datapath & Control Transistors Memory Compiler Operating System (Mac OS X) Application (iTunes) Assembler
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• ISA (instruction set architecture) • A well-define hardware/software interface • The “contract”between software and hardware •Functional definition of operations, modes, and storage locations supported by hardware •Precise description of how to invoke, and access them • No guarantees regarding •How operations are implemented
Computer Architecture 10 More Examples with Jump Instructions goto target Source operands Operator Instruction: jmp target No dest operand involved; Or you can view dest as the program counter. A C code for uncondi-tionally jump to the code at target. {gototarget} Source operands Operator Instruction: jnz target A C code for condi-tionally jump ...
December 14, 2010 09:22 ham_338065_ch02 Sheet number 2 Page number 28 cyan black 28 CHAPTER 2 • InstructionSetArchitecture This chapter considers the way programs are executed in a computer from the machine instruction set view-point. Chapter 1 introduced the general concept that both program instructions and data operands are stored in the ...
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Spring 2016 CS430 - Computer Architecture 25 Data Type Description General Byte, word (16 bits), doubleword (32 bits), quadword (64 bits), and double quadword (128 bits) locations with arbitrary binary contents. Integer A signed binary value contained in a byte, word, or doubleword, using twos complement representation.
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CI 50 (Martin/Roth): Instruction Set Architectures 4 What Is An ISA? ¥ISA (instruction set architecture) ¥A well-define hardware/software interface ¥The ÒcontractÓ between software and hardware ¥Functional definition of operations, modes, and storage locations supported by hardware ¥Precise description of how to invoke, and access them