microprocessor qp paper

P.A. COLLEGE OF ENGINEERING AND TECHNOLOGY

PALLADAM ROAD, POLLACHI, COIMBATORE - 642 002

ODD SEMESTER 2012-13

CYCLE TEST – I Roll Number: __________________

Programme: B.E/B.TechBranch: ECESemester: V ECE A & B

Date:Time: 9.00 AM to 10.30 AM

Course Code:080290030Course Name: Microprocessor and applications

Duration: 1 ½ HoursMax.Marks: 50

PART – A(10 x 2 = 20 MARKS)ANSWER ALL THE QUESTIONS

1. Why address bus is unidirectional?2. What is the function of ALE signal in 8085 microprocessor?3. Define instruction cycle?4. What is the function of HOLD and READY signals in 8085 microprocessor?5. Compare similarities and differences between PUSH/POP and CALL/RET

instructions.6. Write the operation carried out when 8085 executes RST 0 instructions.7. Compare PUSH and POP instructions.8. What is an interrupt? List the interrupts in 8085 microprocessor?9. What is the function of control flags in 8086 microprocessor?10.What is pipelined architecture?

PART – B(3 x 10 = 30 MARKS)ANSWER ANY THREE QUESTIONS

11.Draw and explain the architecture of 8085 microprocessor.12.Explain the data transfer and Branch group of instructions in 8085 microprocessor.13.Draw and explain the timing diagram for the instruction LDA 5000H.14. i) Explain about the addressing modes in 8085 microprocessor

ii) Write an assembly language program to divide two 8 bit data’s using 8085 microprocessor?




CYCLE TEST – I Roll Number: __________________






1. What is the function of control flags in 8086 microprocessor?2. List out the segment registers in 8086 microprocessor.3. What is queue? How queue is implemented in 8086 microprocessor?4. What is the function of DAA instruction?5. What is microprocessor? List the features of 8085 microprocessor.6. Define instruction cycle?7. What is addressing mode? List the addressing modes in 8085.8. List the flags in 8085 microprocessor.9. Write an assembly language program to multiply two 8 bit data’s using 8085

microprocessor?10.What is the difference between shift and rotate instruction?


11.Draw the architecture of 8086 microprocessor and explain the operation of individual blocks.

12.Draw and explain the pin details of 8085 microprocessor. 13.Draw and explain the timing diagram for the instruction MVI A, 30H.14.Draw the interrupt structure and explain about the interrupts in 8085

microprocessor.




CYCLE TEST – II Roll Number: __________________






1. How 20 bit physical address is calculated in 8086 microprocessor?2. What are the advantages of using memory segmentation in 8086 microprocessor?3. How clock signal is generated in 8086? What is the maximum internal clock

frequency of 8086?4. What are the operations performed by string instructions in 8086?5. What is the function of REP prefix used with string instructions?6. Give the interrupt priorities of 8086.

7. What is the function of LOCK instruction?8. What are the two operating modes of 8086 microprocessor?9. What is the function of pins BHE’ and MN/MX’ ?10.What is the function of ESC instruction?


11.Explain the maximum mode operation of 8086 with the timing diagrams of memory read and memory write cycle.

12.Explain about the interrupts in 8086 microprocessor.13.Explain the various addressing modes of 8086 microprocessor.14.Explain about the string and processor control instructions in 8086 microprocessor.




CYCLE TEST – II Roll Number: __________________






1. Compare MACROs. and PROCEDUREs.2. What are the advantages of using memory segmentation in 8086 microprocessor?3. How clock signal is generated in 8086? What is the maximum internal clock

frequency of 8086?4. Compare the instruction set of 8085 and 8086 microprocessors.5. What is the function of REP prefix used with string instructions?6. Give the interrupt priorities of 8086.

7. What is the function of TEST instruction?8. What are the two operating modes of 8086 microprocessor?9. What is the function of pins BHE’ and MN/MX’ ?10.What is the function of ESC instruction?


11.Explain the minimum mode operation of 8086 with the timing diagrams of memory read and memory write cycle.

12.Draw and explain the pin details of 8086 microprocessor. 13.Explain the various addressing modes of 8086 microprocessor.14.What is assembler directive and explain assembler directives with example?




CYCLE TEST – III Roll Number: __________________






1. Draw the command and mode word format of 8251.2. Draw the control word format of BSR mode.3. What are the features of 8259?4. What is the function of two-key lock mode and N-key roll over mode?5. What is meant by keyboard debouncing?6. Name the modes used by the DMA to transfer data.7. What is programmed I/O?8. List the characteristics of DRAM.9. Compare static and dynamic RAM.10.What is the function of optical motor shaft encoder?


11.With neat sketch explain the functions of 8255 PPI.12.With neat sketch explain the function of Keyboard and display controller.13.Explain about the various methods of interfacing microcomputer port to D.C high

power device and A.C high power device in detail. 14.Explain about the method of interfacing I/O devices in I/O mapped I/O and

memory mapped I/O.




CYCLE TEST – III Roll Number: __________________





PART – A (10 x 2 = 20 MARKS)ANSWER ALL THE QUESTIONS

1. What is Block and Demand transfer mode DMA?2. Draw the control word format of I/O mode in 8255.3. List the different mode of operations of 8253.4. Compare memory mapped I/O and standard I/O mapped I/O in 8085 based

system.5. What is meant by volatile and non-volatile?6. What is the function of optical motor shaft encoder?7. What is interrupt driven I/O?8. What is the function of two-key lock mode and N-key roll over mode?9. What is meant by keyboard debouncing?10.Draw the command and mode word format of 8251.

PART – B (3 x 10 = 30 MARKS)ANSWER ANY THREE QUESTIONS

11.With neat sketch explain the functions of 8253 and its various operating modes.12.Explain about the working of optical motor shaft encoders.13.Design a microprocessor based with system 4KB of RAM and 4KB of EPROM.14.With neat sketch explain the function of Programmable Interrupt Controller and

its different mode of operations.




MODEL EXAMINATION – OCTOBER 2012Roll Number: __________________


Date: Time: 9.00 AM to 10.30 AM

Course Code:080290030Course Name: Microprocessor and Applications

Duration: 3 HoursMax.Marks:100


1. What is an interrupt? List the interrupts in 8085 microprocessor?2. What is the function of HOLD and READY signals in 8085 microprocessor?3. Write an assembly language program to multiply two 8 bit data’s using 8085

microprocessor?4. How 20 bit physical address is calculated in 8086 microprocessor?5. Compare MACROs. and PROCEDUREs.6. What are the advantages of using memory segmentation in 8086 microprocessor?7. What is the function of ESC instruction in 8086? 8. Draw the command and mode word format of 8251.9. What is programmed I/O?10.Draw the control word format of I/O mode in 8255.

PART – B (3 x 10 = 30 MARKS)ANSWER ALL THE QUESTIONS

11.a) i) Explain about the addressing modes in 8085 microprocessor. [8] ii) Write an assembly language program to find largest element in an array

using 8085 microprocessor? [8]OR

b) i) Draw and explain the architecture of 8085 microprocessor. [10] ii) Write an assembly language program to divide two 8 bit data’s using 8085 microprocessor? [6]

12. a) i) Draw the architecture of 8086 microprocessor and explain the operation of individual blocks. [10] ii) Explain about the memory segmentation of 8086 microprocessor. [6]

ORb) Explain the maximum mode operation of 8086 with the timing diagrams of memory read and memory write cycle. [16]




13.a) i) Explain the various addressing modes of 8086 microprocessor. [10] ii) Write an assembly language program to multiply two 16 bit data’s using 8086 microprocessor? [6] OR

b) Draw and explain the pin details of 8086 microprocessor. [16]

14.a). i) With neat sketch explain the function of Keyboard and display controller.[10]

ii) Explain about the method interfacing ADC with 8085 microprocessor. [6]

OR

b) i) With neat sketch explain the function of Programmable Interrupt Controller and its different mode of operations. [10]

ii) Explain about the method of interfacing 8257 with 8085 microprocessor.[6]

15.a) i) Explain about the various methods of interfacing microcomputer port to D.C high power device and A.C high power device in detail. [10] ii) Explain about the working principle of optical motor shaft encoder. [6]

ORb) Explain about the method of interfacing DRAM with 8085 microprocessor. [16]




MODEL EXAMINATION – OCTOBER 2012Roll Number: __________________


Date: Time: 9.00 AM to 10.30 AM

Course Code:080290030Course Name: Microprocessor and Applications

Duration: 3 HoursMax.Marks:100


1. What is queue? How queue is implemented in 8086 microprocessor?2. What is the function of DAA instruction?3. Give the interrupt priorities of 8086.4. Draw the control word format of BSR mode.5. Draw the command and mode word format of 8251.6. Compare memory mapped I/O and standard I/O mapped I/O in 8085 based

system.7. How clock signal is generated in 8086? What is the maximum internal clock

frequency of 8086?8. What is the function of optical motor shaft encoder?9. Write an assembly language program to find 2’s complement of a data 3AH using

8085 microprocessor?10.What are the operations performed by string instructions in 8086?

PART – B (3 x 10 = 30 MARKS)ANSWER ALL THE QUESTIONS

11.a) i) Explain about the addressing modes in 8085 microprocessor. [8] ii) Write an assembly language program to sort an array in ascending order

using 8085 microprocessor? [8]OR

b) i) Draw and explain the timing diagram of an instruction LDA Address. [10] ii) Write an assembly language program to divide two 8 bit data’s using 8085 microprocessor? [6]

12. a) i) Draw the architecture of 8086 microprocessor and explain the operation of individual blocks. [10] ii) Explain about the memory segmentation of 8086 microprocessor. [6]

ORb) Explain the minimum mode operation of 8086 with the timing diagrams of memory read and memory write cycle. [16]




13.a) i) Explain the various addressing modes of 8086 microprocessor. [10] ii) Write an assembly language program to multiply two 16 bit data’s using 8086 microprocessor? [6] OR

b) Explain about the arithmetic and logical group of instruction in 8086 . [16]

14. a). i) Explain about the different mode of operations of 8255 PPI. [10]

ii) Explain about the method interfacing DAC with 8085 microprocessor. [6]

OR

b) i) With neat sketch explain the function of 8253 and its different mode of operations. [10]

ii) Explain about the method of interfacing 8251 with 8085 microprocessor. [6]

15.a) Explain about the various methods of interfacing microcomputer port to D.C high power device and A.C high power device in detail. [16]

ORb) Explain about the method of interfacing with 8085 microprocessor. [16]

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