University Of Pune Question Paper
FYMCA (Engg. Faculty)
MICROPROCESSOR APPLICATIONS
(2008 Pattern) (510912)
MAY/JUNE 2013 EXAMINATIONS
Time: 3 Hours] [Max. Marks : 70
Instructions to the candidates:
1) Answers to the two sections should be written in separate answer books.
2) Neat diagrams must be drawn wherever necessary.
3) Assume Suitable data if necessary.
SECTION I
Q1) a) Explain the functioning of the following pins of 8085 microprocessor. Indicate
their activation status.
i) restart interrupt ii) Address latch enable
iii) Input output/Memory iv) READY
[8]
b) Explain Arithmetic and logical group of 8085 microprocessor. [4]
OR
Q2) a) Explain the concept of tri-state logic. Explain unidirectional and bidirectional
buffer with neat diagram and truth table.
[8]
b) Explain various flag registers in 8085. [4]
Q3) a) What are the various addressing modes of 8085? [6]
b) Explain any 6 machine cycles of 8085 microprocessor. [6]
OR
Q4) a) What is a Stack? Explain push and pop operation of stack using suitable example. [6]
b) Write an ALP to load register B with 17H and register C with 50H and add the
two. Place the final result in D register.
[6]
Q5) a) Explain the I/O Interfacing Techniques of 8085 MPU. [6]
b) Explain the 4x4 key matrix interfacing. [5]
OR
Q6) a) What are the advantages and disadvantages of I/O mapped I/O over Memory
mapped I/O.
[4]
b) List and explain all I/O related instructions of 8085. [4]
c) Compare interrupts driven I/O and polled I/O. [3]
[4366]-204 Page 2 of 2
0BSECTION II
Q7) a) Draw and explain the pin diagram of 8253 in detail pin descriptions. [8]
b) Write short note on the following
i) hardware interrupt ii) software interrupt
iii) interrupt priority structure iv) maskable and non-maskable interrupts
[4]
OR
Q8) a) Explain Control Word register of 8253 Interval Timer. [4]
b) Explain in brief about mode 0 and mode 1 operations of 8253 with timing
diagram.
[8]
Q9) a) Draw and explain the programmer’s model of 8086. [8]
b) Explain the usefulness of the following instruction in 8086.
i) LOCK ii) TEST iii) XLAT iv) LES
[4]
OR
Q10) a) Explain various registers in 8086. [6]
b) What is memory segmentation? Explain in detail. [6]
Q11) a) Explain various addressing modes of 8086. [7]
b) Explain what is meant by BIOS calls. List and use of any 4 BIOS call. [4]
OR
Q12) a) Explain Instruction format of 8086 assembly language programming. [6]
b) Explain the INT 21H function whose calling parameter are given bellow.
i) 02H ii) 01H iii) 09H iv) 4CH v) 0FH
[5]
FYMCA (Engg. Faculty)
MICROPROCESSOR APPLICATIONS
(2008 Pattern) (510912)
MAY/JUNE 2013 EXAMINATIONS
Time: 3 Hours] [Max. Marks : 70
Instructions to the candidates:
2) Neat diagrams must be drawn wherever necessary.
3) Assume Suitable data if necessary.
SECTION I
Q1) a) Explain the functioning of the following pins of 8085 microprocessor. Indicate
their activation status.
i) restart interrupt ii) Address latch enable
iii) Input output/Memory iv) READY
[8]
b) Explain Arithmetic and logical group of 8085 microprocessor. [4]
OR
Q2) a) Explain the concept of tri-state logic. Explain unidirectional and bidirectional
buffer with neat diagram and truth table.
[8]
b) Explain various flag registers in 8085. [4]
Q3) a) What are the various addressing modes of 8085? [6]
b) Explain any 6 machine cycles of 8085 microprocessor. [6]
OR
Q4) a) What is a Stack? Explain push and pop operation of stack using suitable example. [6]
b) Write an ALP to load register B with 17H and register C with 50H and add the
two. Place the final result in D register.
[6]
Q5) a) Explain the I/O Interfacing Techniques of 8085 MPU. [6]
b) Explain the 4x4 key matrix interfacing. [5]
OR
Q6) a) What are the advantages and disadvantages of I/O mapped I/O over Memory
mapped I/O.
[4]
b) List and explain all I/O related instructions of 8085. [4]
c) Compare interrupts driven I/O and polled I/O. [3]
[4366]-204 Page 2 of 2
0BSECTION II
Q7) a) Draw and explain the pin diagram of 8253 in detail pin descriptions. [8]
b) Write short note on the following
i) hardware interrupt ii) software interrupt
iii) interrupt priority structure iv) maskable and non-maskable interrupts
[4]
OR
Q8) a) Explain Control Word register of 8253 Interval Timer. [4]
b) Explain in brief about mode 0 and mode 1 operations of 8253 with timing
diagram.
[8]
Q9) a) Draw and explain the programmer’s model of 8086. [8]
b) Explain the usefulness of the following instruction in 8086.
i) LOCK ii) TEST iii) XLAT iv) LES
[4]
OR
Q10) a) Explain various registers in 8086. [6]
b) What is memory segmentation? Explain in detail. [6]
Q11) a) Explain various addressing modes of 8086. [7]
b) Explain what is meant by BIOS calls. List and use of any 4 BIOS call. [4]
OR
Q12) a) Explain Instruction format of 8086 assembly language programming. [6]
b) Explain the INT 21H function whose calling parameter are given bellow.
i) 02H ii) 01H iii) 09H iv) 4CH v) 0FH
[5]
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