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Addressing Modes in Computer Architecture

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Addressing Modes in Computer Architecture

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Questions and Answers

What is addressing mode concerned with?

Executing the instructions in a program

Organizing the bits of an instruction to define the operand addresses (correct)

Controlling the flow of data between registers

Managing the memory allocation in a computer

Which of the following is NOT a common addressing technique?

Parallel (correct)

Direct

Immediate

What does immediate addressing involve?

Storing operands in a stack

Fetching the operand from memory

Referencing a register to obtain the operand

Having the operand present in the instruction itself (correct)

What is the advantage of immediate addressing?

Avoiding the need for memory references to obtain operands Signup and view all the answers

What does EA stand for in addressing modes?

Effective Address Signup and view all the answers

What is the main disadvantage of immediate addressing?

Has a limited address range Signup and view all the answers

How does register addressing differ from direct addressing?

It refers to a register instead of a memory address Signup and view all the answers

What is the advantage of register addressing over direct addressing?

Requires no memory reference Signup and view all the answers

In indirect addressing, what does the address field refer to?

A word in memory containing the operand's address Signup and view all the answers

How does register indirect addressing compare to indirect addressing in terms of memory references?

Requires two memory references Signup and view all the answers

Why is direct addressing simpler compared to other forms of addressing?

Directly uses the effective address as the operand's address Signup and view all the answers