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848071 Pages: 2

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FOURTH SEMESTER B.TECH DEGREE EXAMINATION, MAY 2017

CS202: COMPUTER ORGANISATION AND ARCHITECTURE (CS, IT)

Max. Marks: 100 Time: 3 hrs

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PART ^
Answer all questions. Each carries 3 marks.

Write notes on condition codes.

Explain indirect addressing with an example.

Draw the flow chart for Booth’s Multiplication algorithm.

Explain the process of storing a word in memory using a single bus organization. Specify
which all control signals will be activated.

PART 8
Answer any two questions. Each carries 9 marks.

a) Briefly explain the memory access instructions and addressing modes of ARM processor
(4)

b) Write notes on multiple bus organization (5)

Explain the terms processor stack, stack frame and frame pointer with relation to subroutine

processing. Use a relevant example.

Draw and explain the flow charts for floating point multiplication and division.

PART C
Answer all questions. Each carries 3 marks.

Differentiate between programmed 1/0 and interrupt driven I/O.
Define the terms a)Latency b)Bandwidth c)Memory cycle time
Why do dynamic RAMs need constant refreshing? How is this done?

. Explain Direct Memory Access. What is burst mode DMA?

PART D
Answer any two questions. Each carries 9 marks.

a) Distinguish between centralized and distributed bus arbitration? (4) b) Write
notes on set associative cache mapping. (5)

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