Osmania University (OU) 2007 B.E Computer Science COMPUTER ARCHITECTURE - Question Paper
Code No. 4212/N FACULTY OF ENGINEERING
B.E. 2/4 (CSE) I Semester Suppl. Examination May/June - 2008 Subject: Computer Organization & Architectures
Time : 3 hours ] [Max, Marks : 75
[Note : Answer all questions of Part-A
Answer five questions from Part-B.
PART - A (25 marks)
1. The following transfer statements specify a memory. Explain the memory
operation in each case: ' 3
(a) R2 M[AR]
(b) M [AR] <- R3
(c) R5 <- M [R5]
2. What logic microoperations can be performed with two variables ? 3
3. Differentiate between Direct Address and Indirect Address. 2
4. What are the various phases of each Instruction cycle ? 2
5. What is the advantage of microprogrammed control ? 3
6. Differentiate between External Interrupts and Internal Interrupts. 2
7. What do you understand by Memory Interleaving ? 3
8. What is the advantage ofBlock Transfer? 2
9. How is the full duplex transmission system different from half duplex transmission ? 2
10. Where is the Translation Look Aside Buffer used ? 3 C -154 [Turn over
PART - B (5x10=50 marks)
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11. |
(a) |
Draw the 4-bit Adder-subtractor circuit using full-adders and exclusive OR gates. 5 |
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(b) |
Draw the flow-chart for Interrupt cycle and explain. 5 | |
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12. |
(a) |
What is a microprogram sequencer ? Draw the block diagram and explain. 6 |
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(b) |
Briefly explain about RISC architecture with its characteristics. 4 | |
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13. |
(a) |
What is pipelining ? Explain with the help of space time diagram, how speed up is achieved. 5 |
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(b) |
Draw the diagram of BCD adder and briefly explain its operation with suitable example. 5 | |
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14. |
(a) |
Explain how the Asynchronous Serial Transfer of data takes place between two units. 6 |
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(b) |
Explain briefly about IBM 370 I/o channel. 4 | |
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15. |
(a) |
Give the block diagram and function table of a typical RAM chip. 5 |
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(b) |
How does the Set Associative mapping of Cache organization overcome the disadvantages of the direct mapping scheme ? 5 | |
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16. |
(a) |
What are shift Microoperations ? Explainlogical shift, circular shift, Arithmetic shifts. 6 |
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(b) |
With examples explain Register Indirect addressing mode and Relative addressing mode. 4 |
17. Write short notes on any two : 5x2=10
(a) Registers for Basic computer
(b) Instruction Pipelining
(c) Daisy chaining priority.
C-154/500
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Attachment: |
| Earning: Approval pending. |
