15.3. Different Addressing Modes

Try these first

1. 1.

   What does indirect addressing mean?

   Hint

   Think about how addresses can point to other addresses.

2. 2.

   How does register indirect addressing streamline data access?

   Hint

   Consider how registers are faster than accessing memory.

3. 3.

   What is one advantage of register indirect addressing compared to indirect addressing?

   • Fewer memory accesses
   • Slower execution
   • More complex operations

   Hint

   Think about how addressing modes differ in their efficiency.

4. 4.

   True or False: Indirect addressing requires two memory accesses.

   • True
   • False

   Hint

   Recall the sequence of actions in indirect addressing.

5. 5.

   Consider the following instruction execution flow: LOAD R1, M, where M indirectly points to address X, which contains value L. Draw the control signals sequence and explain the execution time.

   Hint

   Outline each stage clearly in your diagram.

6. 6.

   Explain a scenario in a computer program where register indirect addressing would significantly improve performance compared to indirect addressing.

   Hint

   Think of looping constructs or iterative calculations.