Instruction Set Architecture and Control Unit Design: Important Questions

Digital Principles and Computer Organization:

Chapter 8: Instruction Set Architecture and Control Unit Design

Important Questions

1. Write a note on Instruction Set Architecture (ISA).

2. What is the importance of ISA?

3. Define the acronyms CISC and RISC.

4. What is the primary concept or goal each architecture is based on?

5. Compare and contrast CISC and RISC architectures.

6. What is the information conveyed by addressing modes ?

7. Define addressing mode. Classify addressing modes and explain each type with examples,

8. Differentiate direct and indirect addressing mode.

9. Distinguish between autoincrement and autodecrement addressing mode.

10. Define addressing mode and explain the basic addressing modes with an example for each.

11. What are addressing modes? Explain the various addressing modes with examples.

12. Define addressing mode in a computer. What are the different MIPS addressing modes? Give one example instruction to each category.

13. What do you mean by addressing modes? Explain the types of addressing modes that exists in modern processors ?

14. What is the need for addressing in a computer system? Explain the different addressing modes with suitable examples.

15. Elaborate the different types of addressing modes with a suitable example.

16. Explain direct, immediate, relative and indexed addressing modes with examples.

17. Draw and explain typical hardwired control unit.

18. With a diagram which shows the separation decoding and encoding functions, explain hardwired control.

19. Show the generation Zin and end control signal.

20. What modification is required in the basic organization to support microprogram branching?

21. Explain the basic concept of microprogrammed control.

22. Describe the organization of microprogrammed control unit.

23. State the advantages and disadvantages of microprogrammed control.

24. Show the control sequences for execution of Add (R3), R1 and explain.

25. Explain microinstruction sequencing with next address field.

26. List out the advantages and limitations of a hard wired control unit. Explain the organization of a micro programmed control unit.

27. Compare hardwired control unit with microprogrammed control unit.