14.4.1. Comprehension Objectives

Try these first

1. 1.

   What is immediate addressing mode?

   Hint

   Think about where the operand is located.

2. 2.

   Name one example of an addressing mode.

   Hint

   Recall what happens in direct mode.

3. 3.

   What is immediate addressing mode?

   • The operand is in the instruction
   • The operand is found in memory
   • The operand is in another register

   Hint

   Think about how the operand is used in immediate mode.

4. 4.

   True or False: Direct addressing mode is less complex than indirect addressing mode.

   • True
   • False

   Hint

   Consider the number of steps for each mode.

5. 5.

   Design a short assembly code using immediate and direct addressing modes. Explain how each mode works within your code.

   Hint

   Consider how you reference the operand in each case.

6. 6.

   Compare and contrast the execution time for instructions using different addressing modes in a microprocessor environment, providing rationale.

   Hint

   Map out the steps each mode requires to comprehend the time taken for each.