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Posted By: CONFIDENCE IS THE COMPANION OF SUCCESS Member Level: Diamond Posted Date: 22 Apr 2008
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2006 Anna University Diploma Information Technology Computer Architecture Question paper
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NOV/DEC 2006
Computer Architecture
IT.
Answer ALL questions
(PART A-10*2=20 marks)
1.What is a bus? What are the different buses in a CPU?
2.What are the four basic types of operations that need to be supported by an instruction set?
3.Draw the symbolic representation of the full adder and give the expression for the sum.
4.In conforming to the IEEE standard mention any four situations under which a processor sets exception flag.
5.What are the address sequencing capabilities required in a control memory?
6.What is meant by super scalar processor?
7.What do you understand by Hit ratio?
8.Define locality of reference. What are its types?
9.What is DMA operation? State its advantages.
10.What is the necessity of an interface?
(PART A-5*16=80 marks)
11.(a).i).Give the different instruction formats of a CPU in general.
ii).Define addressing modes. Classify addressing modes and explain each type with examples..
(Or)
11.(b).i).Write an assembly language to find the biggest number among given three numbers.
ii).Explain instruction set and instruction sequencing.
12.(a).i).What is the disadvantage in using a ripple carry adder?
ii).Draw the diagram of a carry look ahead adder and explain the carry look ahead principle.
(Or)
12.(b).i).Give the IEEE standard double precision floating point format.
ii).Explain the floating point Add/Subtract rules. With a detailed flowchart explain how floating point addition/subtraction is performed.
13.(a).i).With a neat diagram explain the basic organization of a micro programmed control unit. Explain the operation of this control unit with a typical set of microinstructions.
(Or)
13.(b).i).Explain the various design methods of hardwired control unit.
ii).Explain the basic concepts of pipelining and comparing it with sequential processing. Draw needed diagrams.
14.(a).i).Draw a neat sketch of memory hierarchy and explain the need of cache memory.
ii).Explain the various mapping functions used for mapping main memory blocks into cache memory.
(Or)
14.(b).i).Explain the virtual memory translation and TLB with necessary diagram.
ii).Discuss the concept of memory interleaving and give its advantages.
15.(a).i).Discuss the general steps involved in interrupt driven data transfer.
ii).Explain how DMA transfer is accomplished with a neat diagram..
(Or)
15.(b).Write short notes on:
i).PCI
ii).Advantages of USB over older I/O bus architecture.
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