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Roll No. ......................
Total No. of Questions : 13] [Total
No. of Pages : 02
Paper ID [A0215]
(Please fill this Paper
ID in OMR Sheet)
BCA 305 (Old/S05)
(Sem. - 2nd)
INDRODUCTION TO
MICROPROCESSOR
Time : 03 Hours Maximum
Marks : 75
Instruction to
Candidates:
1) Section -A is Compulsory.
2) Attempt any Nine questions
from Section - B.
Section - A<
(15 × 2 = 30)
Q1)
a) Define the term word length.
b) What is the function of address bus and also
specify the direction of information flow on the address bus?
c) Why are the program counter and the stack
pointer 16-bit registers in 8085?
d) Explain the function of ALE in 8085.
e) Specify four control signals used by 8085.
f) What are the different modes in which 8086
works?
g) List limitations of 16-bit microprocessor.
h) What is a flag? List all the commonly used
flags in 8086.
i) What do you understand by pipelining?
j) List the processing units of 8086.
k) What is the requirement of interrupt
controller?
l) Explain why each channel in 8257 DMA
controller is restricted to 16K bytes of data transfer.
m) What is a hardware interrupt?
n) What is application of DMA?
o) What is the role played by current word
register in 8237?
Section - B
(9 × 5 = 45)
Q2) Discuss fetch operation and
execute operation of Intel 8085.
Q3) Classify 8085 instructions
in various groups. Give examples of instructions for each group.
Q4) Write a program for addition
of two 8-bit numbers stored in memory locations FC00 and FC01 (using 8085
microprocessor).
Q5) Write a short note on CISC
processors.
Q6) Discuss the register
organization of 8086. Discuss the function of each register.
Q7) Explain the meaning of the
following 8086 instructions: LOOP, DAA, CBW,
IMUL, ROR.
Q8) Discuss various addressing
modes of 8086.
Q9) Discuss the application
areas of 16-bit microprocessor.
Q10) Explain in detail working of
8237 DMA controller.
Q11) Write a short note on
arithmetic coprocessor.
Q12) Discuss cycle stealing and
burst mode of DMA.
Q13) How will you select a
microprocessor for a particular application?
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