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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
M.Sc.DEGREE EXAMINATION PHYSICS
SECONDSEMESTER APRIL 2018
PH 2810- MICROPROCESSOR MICRO CONTROLLERS
Date: 19-04-2018 Dept. No. Max. 100 Marks
Time: 01:00-04:00
Part A
Answer ALL Questions. (10x2=20)
1. Write a note on the AD bus of P8086.
2. State the use of the queue of P8086.
3. Explain the role of the "AAM" instruction of P8086.
4. Develop a program segment for μP8086 to multiply two bytes in memory.
5. Develop a program for to find the number of 0s in the number in AX.
6. Write a note on "ALE" signal of P8086.
7. Define a macro which stores in BL the square root of the number in AL.
8. State the differences between the "REP" and "REPE" instructions.
9. Write a note on the register banks of C8051.
10. Explain the role of the "JNB" instruction of C8051.
Part B
Answer any FOUR Questions (4x7.5=30)
11. With a sample instruction for each, explain the addressing modes of data in P8086.
12. Develop an ASM program for to find the factorial of a byte in memory.
13. Develop an ASM program for to capitalize an array of lower case alphabets.
14. With a block diagram, explain bus buffering and latching in operated in maximum mode.
15. With an example each, explain the various branch instruction of C8051.
16. Discuss in detail, the ports and the related instructions available in C8051.
Part C
Answer any FOUR Questions (4x12.5=50)
17. With a neat block diagram, explain the internal architecture ofP8086.
18. Develop an ASM program for to solve Q A*B where C and D are bytes in memory. Use relative indexed mode of addressing for data.
19. Develop an ASM program for to pick the largest of a word array in memory.
20. With a block diagram explainthe DMA data transfer.
21. Develop an interface and an ASM program for to turn "ON" eight LEDs connected to port P0, if the switch connected to P1.0 is "OFF", else turn the LEDs "OFF"
22. With a neat block diagram, explain the internal architecture of C8051.