Jawaharlal Nehru Technological University Kakinada 2007 B.Tech Chemical Science and Technology computer organisation - Question Paper

croprocessors. [16]
2. discuss about instruction, fetch, and decode cycles for a memory reference instruc-
tion. Draw a flow chart also to discuss the identical. Indicate clearly where and which
processor registers comes into picture. Now let us presume while a instruction is in
the middle of its decode cycle a interrupt is arrived. What is going to happen? Is
the instruction is completed or not. If we want to stop there itself and handle the
interrupt elaborate the difficulties? [16]
3. (a) elaborate the major design considerations in microinstruction sequencing? [8]
(b) discuss about microinstruction sequencing techniques, specifically variable
format address microinstruction. [8]
4. (a) How many bits are needed to store the outcome addition, subtraction, multipli-
cation and division of 2 n-bit unsigned numbers. Prove. [8]
(b) What is overflow and underflow? What is the reason? If the computer is
considered as infinite system do we still have these issues. [8]
5. (a) A computer uses RAM chips of 1024 x one capacity. [10]
i. How many chips are needed and how should their address lines be con-
nected to give a memory capacity of 1024 bytes.
ii. How many chips are needed to give a memory capacity of 16K bytes.
(b) An address space is specified by 24 bits and the corresponding memory space
by 16 bits [6]
i. How many words are there in the address space.
ii. How many words are there in the memory space.
6. discuss the following:
(a) CPU - I O P Communication
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Code No: R059210505 Set No. 2
(b) I O P
(c) IBM 370 I/O Channel. [5+5+6]
7. (a) What is pipelining? discuss. [8]
(b) discuss 4 segment pipelining. [8]
8. (a) discuss the working of eight x eight Omega Switching network.
(b) discuss the functioning of Binary Tree network with two x two Switches. Show a
neat sketch. [8+8]
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Code No: R059210505 Set No. 3
II B.Tech I Semester Regular Examinations, November 2007
COMPUTER ORGANIZATION
( Common to Computer Science & Engineering, info Technology
and Computer Science & Systems Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
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Earning:   Approval pending.