Anna University Chennai 2007 M.C.A Microprocessor and its Application - Question Paper

M.C.A DEGREE EXAMINATION,NOVEMBER/DECEMBER 2007
Third Semester
MC 1702-MICROPROCESSOR AND ITS APPLICATION
(Regulation 2005)
Time:Three hours Maximum:100 marks

ans ALL ques.
PART A-(10 x 2=20 marks)



1. List the register set available in 8085.
2. How are the instructions of 8085 classified?
3. Compare 8085 and 8086 flag registers.
4. What are the 2 modes of operation supported by 8086 architecture?
How do you select the mode of operation?
5. Give the function of the subsequent pins in 8086 (a) Ready (b) ALE.
6. When is a machine cycle initiated?How many T states does every
Machine cycle contain in 8086?
7. What is the function of the LOCK,BE3 – BEO?
8. Name and provide contents of the new control register in Pentium as compared to 80386 control register.
9. Give the format of program clock word of 8279 and mention its purpose.
10. Mention any 2 coprocessors and their use. .


PART B-(5 x 16=80 marks)
11. (a) (i) Draw the Architectural diagram of 8085 and discuss. (10)
(ii) Write a detailed note on the Serial I/O control. (6)
Or

(b) explain the complete interrupt structure of 8085 CPU. (16)

12. (a) (i) provide the Instruction format of 8086 and discuss the use of mthe byte
addressing mode. (10)
(ii) How is 20 bit physical address generated in 8086 CPU discuss with
examples? (6)

Or

(b) List the different addressing mode of 8086 with suitable examples and
Explain. (16)

13. (a) (i) With a neat sketch discuss the memory organization and access of
the 8086 processor. (10)
(ii) Draw the memory Write Bus cycle diagram of 8086 working in
maximum mode. (6)


Or
(b) Draw the schematic of the 8086 sytem working in the maximum mode
with all necessary peripheral the components and discuss. (16)

14. (a) define the 80386 memory management. (16)


Or
(b) Draw the block diagram of the Pentium processor and explain the
features of the identical. (16)




15. a) provide the Basic description of the 8279 pin configuration and discuss
how you will interface a eight digit display and a 64 keys keyboard to the
CPU using the 8279. (16)


Or
(b) Short notes on:
(i) CRT Controller. (8)
(ii) Coprocessor. (8)

Earning:   Approval pending.