Question

Explain the significance of instruction set architecture and its design challenges

Answer 1

Answer:

The instruction set, also called ISA (instruction set architecture), is part of a computer that pertains to programming, which is basically machine language. The instruction set provides commands to the processor, to tell it what it needs to do.

Explanation:

It is also referred to as architecture or computer architecture. A realization of an ISA is called an implementation. An ISA permits multiple implementations that may vary in performance, physical size, and monetary cost (among other things); because the ISA serves as the interface between software and hardware.

Answer 2

Answer:

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The five important instruction set design issues are as listed below;

• ➩ Operation repertoire: How many and which operations to provide, and how complex operations should be. 

• ➩ Data types: The various types of data upon which operations are performed. 

• ➩ Instruction format: Instruction length (in bits), number of addresses, size of various fields, and so on. 

• ➩ Registers: Number of CPU registers that can be referenced by instructions, and their use. 

• ➩ Addressing: The mode or modes by which the address of an operand is specified.