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

PART – B
1. List the important features of 8085 µP.
2. Draw the pin diagram of 8085 and discuss various signals used by 8085.
3. Draw the functional block diagram of 8085 and discuss
4. Discuss briefly the classification of instruction set of 8085 with suitable examples.
5. Explain the different addressing modes of 8085 with examples.
6. Write a short note on machine cycles of 8085.
7. Explain bus idle cycle.
8. Write a neat timing diagram, discuss opcode fetch cycle with and without wait state.
9. Write a neat timing diagram, discuss Memory learn cycle.
10. Write a neat timing diagram, discuss Memory Write cycle.
11. Write a neat timing diagram, discuss I/O learn cycle.
12. Write a neat timing diagram, discuss I/O Write cycle.
13. Write a neat timing diagram, discuss Interrupt acknowledge cycle of 8085 with RST n opcode.
14. Draw the timing diagrams for fetching and execution of the subsequent instructions
15. Using the simplest possible algorithm, Write an 8085 ALP with minimum number of instructions to divide a 16 bit unsigned number in DE by 16. neglect remainder. Store outcome in DE.
16. Write an 8085 ALP to add 16 bit numbers in BC, DE and HL. Store the 16 bit outcome in DE.
17. Write an 8085 ALP to add 2 32-bit numbers.
18. Write an 8085 ALP to move a block of data of length 10010 from the source block starting at 200016 to the destination block starting at 300016
19. Write a subroutine in 8085 ALP to divide an eight bit unsigned no Xi by 2. Also write the main program in 8086 assembly language which will call the subroutine to complete
3
? Xi/2
i=1
Store the outcome in location 500


UNIT - II
PART A
1. What are the functional parts of 8086?
2. Give the register classification of 8086.
3. What are the general data registers? elaborate its uses?
4. What is the use of segment register? List it.
5. How the physical address is calculated?
6. What are pointers and index registers?
7. What is meant by memory segmentation?
8. Define overlapped segment area.
9. What is pipelining?
10. Draw the format of 8086 flag registers.
11. How is the stack top address calculated?
12. Differentiate macro & subroutine.
13. What is nested macro?
14. What is meant by procedure? provide its kinds.
15. What is the function of learn signal?
16. What is the operation performed when Test input is low?

Earning:   Approval pending.