23.5. Instruction Fetch and Execution Overview

Try these first

1. 1.

   What is vertical micro-programming?

   Hint

   Think about reducing memory use.

2. 2.

   Define horizontal micro-programming.

   Hint

   Focus on speed and signal activation.

3. 3.

   What is the primary advantage of vertical micro-programming?

   • Increased speed
   • Reduced memory requirements
   • Simplified design

   Hint

   What does vertical micro-programming achieve?

4. 4.

   True or False: Horizontal micro-programming allows simultaneous activation of multiple control signals.

   • True
   • False

   Hint

   Think about signal independence.

5. 5.

   Design a small micro-program control unit using both vertical and horizontal approaches. Describe the pros and cons of your design.

   Hint

   Consider what tasks work best in each approach.

6. 6.

   Analyze a scenario where a CPU needs to frequently switch between vertical and horizontal micro-programming. What would be the implications?

   Hint

   Think about time delays during switching.