SRM University 2007 B.Tech Electronics and Communications Engineering BANK : Microprocessor and Interfacing - Question Paper

17. What is the purpose of ALE Signal in Minimum mode?
18. What are the pins that are used to indicate the kind of transfer in Minimum mode?
19. What is the operation of S0, S1 & S2 pins of Maximum mode?
20. What is the advantage of using segment registers?
21. Define addressing modes. elaborate its types?
22. Differentiate minimum and maximum mode.
23. How BHE & A0 is used in 8086?
24. What is the use of DEN in minimum mode?
25. What is the use of LOCK in maximum mode?
26. What is the purpose of QS0, QS1 in maximum mode?
27. What will happen when a DMA request is made while the CPU is performing a memory or I/O cycle?
28. What are the parts of flag register?
29. Give the classification of machine control flag?
30. What is segment base?
31. What is bus arbitration logic?
32. What is the purpose of instruction queue?
33. What is instruction pointer?
34. Give the function of status bit S3-S6 during 1st part of a bus cycle.
35. What is Queue? How Queue is implemented in 8086?
36. How clock signal is generated in 8086? What is the maximum internal clock frequency of 8086?
37. Write the special function carried by the general purpose register of 8086.
38. What is the difference ranging from segment register and general purpose registers?
39. What is the use of status signal S3 & S4?
40. What are control bits?

PART B
1. Draw the internal architecture of 8086. discuss every block.
2. Explain the addressing modes of 8086 with example.
3. Explain the control pins used in minimum mode operation.
4. Explain the operation of 8086 when the 8087 processor is connected.
5. Draw the memory learn machine cycle in minimum mode and discuss the operation in every T state.
6. Draw the memory write machine cycle in minimum mode and discuss the operation in every T state.
7. Draw and discuss the memory write machine cycle in maximum mode.
8. Draw and discuss the memory learn machine cycle in maximum mode.
9. Write a program to add two – 16 bit nos.
10. Write a program to multiply and divide the two – 16 bit nos.
11. Explain the subsequent instruction with examples
(i) LEA (ii) LAHF
(iii) LDS (iv) LES
(v) SAHF
12. Explain Shift and Rotate instructions. How it differs from every other?
13. Explain the String instructions used in 8086.
14. Explain the iteration control instruction. In what way it is used in 8086.

Earning:   Approval pending.