Computer Organization - Dec 2014

Information Technology Engineering (Semester 3)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.

Answer any one question from Q1 and Q2

1 (a) Compare IEEE single precision and double precision formats and represent (?16.75)₁₀ in single precision format.(6 marks) 1 (b) Explain with examples the following addressing modes Of 8086:
(i) Register addressing
(ii) Immediate addressing
(iii) Base Index with displacement addressing.(6 marks) 2 (a) Multiply the following signed 2?s complement numbers using Booth's algorithm.
Multiplicand-10011
Multiplier-10101.(6 marks) 2 (b) Write a note on MAX/MIN mode of microprocessor 8086.(6 marks)

Answer any one question from Q3 and Q4

3 (a) Draw and explain programmer's model of microprocessor 8086.(6 marks) 3 (b) Draw and explain single bus organization of CPU. What are its advantages over multiple bus organization?(7 marks) 4 (a) Explain with suitable examples following instructions of 8086:
(i) ADD
(ii) MUL
(iii) ROL.(6 marks) 4 (b) Explain with suitable block diagram design of CPU using hard-wired control method.(7 marks)

Answer any one question from Q5 and Q6

5 (a) Compare direct, set associative and fully associative cache memory mapping techniques.(6 marks) 5 (b) What is virtual memory ? Explain virtual to physical address translation.(6 marks)

Write short notes on (any two):

6 (a) EEPROM(6 marks) 6 (b) RAID(6 marks) 6 (c) SDRAM(6 marks)

Answer any one question from Q7 and Q8

7 (a) Explain the techniques for performing IO in brief.(6 marks) 7 (b) State the explain in brief the use of registers of DMA controller 8237.(7 marks) 8 (a) Explain the functions and features of 8255 and 8251.(6 marks) 8 (b) Explain PCI bus with a neat diagram.(7 marks)