14.5.1. Immediate Mode Example

Try these first

1. 1.

   What is immediate mode in computer architecture?

   Hint

   Think about how the instruction directly uses a value.

2. 2.

   How many micro-instructions are there in immediate mode?

   Hint

   Remember fewer steps mean direct access.

3. 3.

   What does immediate mode mean in computer operations?

   • Operand is fetched from memory
   • Operand is directly in the instruction
   • Operand address is specified

   Hint

   Focus on how the operand is positioned.

4. 4.

   True or False: Indirect addressing requires only four micro-instructions.

   • True
   • False

   Hint

   Recall the larger number of steps involved.

5. 5.

   Consider an algorithm that uses references for operands frequently changing during execution. Which addressing mode would best suit this need and why?

   Hint

   Think about how the operands might need to shift during execution.

6. 6.

   Illustrate how immediate mode can simplify calculations in a tight loop scenario—provide an example instruction to support your explanation.

   Hint

   Consider the efficiency of redundant data fetching in loops.