Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2141001 Microprocessor And Interfacing Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2141001 Date: 10/12/2019
Subject Name: Microprocessor and Interfacing
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q1 (a) Draw and explain flag format of 8085 microprocessor 3
(b) With the help of circuit diagram, explain generation of various control
signals in 8085 microprocessor.
4
(c) Explain the following instructions of 8085 microprocessor
1. CALL 2. XCHG 3. STA 4. LXI 5. ANI 6. XRA 7. OUT
7
Q2 (a) Explain various addressing modes of 8085 microprocessor 3
(b) Classify 8085 microprocessor instruction set. 4
(c) Interface two 2732 EPROM and two 27128 RAM with 8085 microprocessor.
Use 3:8 decoder for interfacing. Show necessary memory map of the
interfacing.
7
OR
(c) Draw and explain the functional block diagram of the 8085 microprocessor. 7
Q3 (a) List down the steps to be executed before executing an interrupt in 8085
microprocessor
3
(b) Write an assembly loop to generate delay of 1 second in 8085 operating at
crystal frequency of 8MHz.
4
(c) Draw the timing diagram for IN 8bit instruction. List down various machines
cycles of IN instruction
7
OR
Q3 (a) Differentiate I/O mapped I?O and Memory mapped I/O 3
(b) Write an assembly loop to generate delay of 750ms in 8085 operating at
crystal frequency of 6MHz.
4
(c) Draw the timing diagram for STA 16bit instruction. List down various
machines cycles of STA instruction
7
Q4 (a) Write a note on working with Stack Pointer in 8085 Microprocessor 3
(b) Write a program to generate the Fibonacci sequence numbers. Generate 14
numbers of sequences and store it in memory.
4
(c) Set of 10 data bytes are stored at C500H. End of the data is indicated by
FFH. Write a program that check each data byte and transfers only those data
byte that are less than (60)d and greater than (20)d to a new memory location
starting from C550H.
7
OR
Q4 (a) Explain CALL and RET instruction. 3
(b) Write a program to find whether a given number is prime or not. Store the
result at D000H
4
(c) The following string is stored at memory location starting from 9100H 7
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2141001 Date: 10/12/2019
Subject Name: Microprocessor and Interfacing
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q1 (a) Draw and explain flag format of 8085 microprocessor 3
(b) With the help of circuit diagram, explain generation of various control
signals in 8085 microprocessor.
4
(c) Explain the following instructions of 8085 microprocessor
1. CALL 2. XCHG 3. STA 4. LXI 5. ANI 6. XRA 7. OUT
7
Q2 (a) Explain various addressing modes of 8085 microprocessor 3
(b) Classify 8085 microprocessor instruction set. 4
(c) Interface two 2732 EPROM and two 27128 RAM with 8085 microprocessor.
Use 3:8 decoder for interfacing. Show necessary memory map of the
interfacing.
7
OR
(c) Draw and explain the functional block diagram of the 8085 microprocessor. 7
Q3 (a) List down the steps to be executed before executing an interrupt in 8085
microprocessor
3
(b) Write an assembly loop to generate delay of 1 second in 8085 operating at
crystal frequency of 8MHz.
4
(c) Draw the timing diagram for IN 8bit instruction. List down various machines
cycles of IN instruction
7
OR
Q3 (a) Differentiate I/O mapped I?O and Memory mapped I/O 3
(b) Write an assembly loop to generate delay of 750ms in 8085 operating at
crystal frequency of 6MHz.
4
(c) Draw the timing diagram for STA 16bit instruction. List down various
machines cycles of STA instruction
7
Q4 (a) Write a note on working with Stack Pointer in 8085 Microprocessor 3
(b) Write a program to generate the Fibonacci sequence numbers. Generate 14
numbers of sequences and store it in memory.
4
(c) Set of 10 data bytes are stored at C500H. End of the data is indicated by
FFH. Write a program that check each data byte and transfers only those data
byte that are less than (60)d and greater than (20)d to a new memory location
starting from C550H.
7
OR
Q4 (a) Explain CALL and RET instruction. 3
(b) Write a program to find whether a given number is prime or not. Store the
result at D000H
4
(c) The following string is stored at memory location starting from 9100H 7
2
"THE QUICK BROWN FOX JUMPS OVER LAZY DOG."
The String is stored in the ASCII format and is terminated with 00H. Write
a program to count the occurrences of each character and store the result at
location 9200H onwards
Q5 (a) List down features of 8086 microprocessor 3
(b) Draw and explain block diagram of 8259 interrupt controller IC 4
(c) Draw and explain block diagram of 80186 microprocessor 7
OR
Q5 (a) List down the advantages of segmentation in 8086 microprocessor 3
(b) Draw and explain block diagram of 8255 peripheral interface IC 4
(c) Draw and explain block diagram of 80486 microprocessor 7
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This post was last modified on 20 February 2020