25.7. Conclusion: Memory Efficiency

Try these first

1. 1.

   Define control signals.

   Hint

   Think of signals that tell the hardware what tasks to perform.

2. 2.

   What distinguishes a horizontal micro program from a vertical micro program?

   Hint

   Consider how memory is utilized differently in each structure.

3. 3.

   What is a hybrid micro program designed to improve?

   • Memory speed
   • Memory efficiency
   • Signal strength

   Hint

   Recall the advantages of combining micro program styles.

4. 4.

   True or False: Only one bit can be active in a vertical micro program at a time.

   • True
   • False

   Hint

   Remember the characteristics of vertical micro programs.

5. 5.

   Create a design for a hybrid micro program that optimizes at least three different control signals for a CPU architecture.

   Hint

   Consider how each part of the CPU interacts and group signals accordingly.

6. 6.

   Analyze the trade-offs of switching from horizontal to hybrid micro programs. What factors should be considered?

   Hint

   Think about both costs: speed in operations and space in memory.