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)
  • Register Indirect
  • 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?

<p>Avoiding the need for memory references to obtain operands (C)</p> Signup and view all the answers

What does EA stand for in addressing modes?

<p>Effective Address (A)</p> Signup and view all the answers

What is the main disadvantage of immediate addressing?

<p>Has a limited address range (C)</p> Signup and view all the answers

How does register addressing differ from direct addressing?

<p>It refers to a register instead of a memory address (A)</p> Signup and view all the answers

What is the advantage of register addressing over direct addressing?

<p>Requires no memory reference (A)</p> Signup and view all the answers

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

<p>A word in memory containing the operand's address (D)</p> Signup and view all the answers

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

<p>Requires two memory references (A)</p> Signup and view all the answers

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

<p>Directly uses the effective address as the operand's address (B)</p> Signup and view all the answers

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