Madras University (UnOM) 2008 B.C.A Computer Application - exam paper

APRIL 2008 MICROPROCESSOR 46412/PK4D
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Time : 3 hours Maximum : 100 marks

Answer any TEN ques.

1.Define microprocessor.
2.Introduce flash memory.
3.Differentiate ranging from SUB AND CMP commands
4.State the purpose of LDAX AND STAX commands.
5.What do you mean by dynamic debugging?
6.How to design a counter?
7.List the conditional return commands.
8.What is the purpose of DAD commands?
9.List the methods for clearing accumulator.
10.Write a note on EI and DI instructions.
11.Write a note on DMA.
12.Define the role of INTR.

PART-B-(5*6=30 MARKS)
Answer any 5 ques..
13.Explain the 8085 registers.
14.Explain the 8085 flags.
15.Explain the data transfer instructions.
16.Explain the modulo 10 counter.
17.With examples discuss stack commands.
18.Write a program to add 2 BCD numbers.
19.Explain the memory mapped I/O.

PART-C --(10*4=40 MARKS)
Answer any 4 ques.
20.Discuss the features of 8085 MPU.
21.Write an assembly language program
to obtain the sum of provided set of eight bit numbers
22.Explain the subroutine with an example.
23.Explain the subsequent commands: DAA, SHLD, XTHL, XCHG, CMC.
24.Explain the vectored interrupts.
25.Discuss the peripheral I/O

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Earning:   Approval pending.