Essentials of Computer Organization and Architecture
Essentials of Computer Organization and Architecture
4th Edition
ISBN: 9781284074482
Author: Linda Null, Julia Lobur
Publisher: Jones & Bartlett Learning
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Chapter 9, Problem 1RETC
Program Plan Intro

Reduced instruction set computer (RISC):

  • In this computer, the instruction set architecture (ISA) allows lesser number of cycles per instruction (CPI) when compared to complex instruction set computer (CISC).
  • As this contains a simple and general set of instructions, it is also called as “Relegate interesting stuff to the Compiler”.
  • It also has another trait and that is the load/store architecture, in which the memory is accessed through specific instructions rather than as a part of most instructions.

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Reduced instruction set computer (RISC):

  • This was designed to provide an instruction set architecture that allows simple and general instructions and avoid the issues caused due to complex instruction set.
  • Only explicit load/store instructions were allowed to access the memory.
  • It also provides minimal instruction set that could carry out all the important operations like data movement, ALU operations, and branching.

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