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Tuesday, 3 October 2017

CSE211 : Computer Organization and Architecture Mid Term Question Paper | lpu


Question  1.
a) Specify the criteria used to classify an instruction into MRI, RRI, or I/O Instruction.

b) What will be the size of data bus and address bus for a memory unit of size 512 x eight (512 words of eight bits each)

c) Draw block diagram to represent the operation P: R1? R2

d) Address Sequencing Capability requires support for 4 various functions. describe them.

e) Determine the logic operand and logic operation that will change the value 1001 to all-zeroes

[2 x five = 10]

Question 2.
a) Design and discuss the working of a circuit that reduces the value of a 4-bit number by one.

b) Represent the design and functioning of Control unit with a block diagram

[6 + four = 10]

Question 3.
a) An 8-bit register R1 contains the value 1000 0001. Determine its value after the subsequent operations:

i. R1? ashl R1
ii. R1? cir R1

b) Design one-stage of an Arithmetic-Logic-Shift unit. discuss its working. Also specify the function table for its operations

[2 + eight = 10]

Question 4.
a) Show the process of monitoring and handling interrupts in the system using a flowchart.

b) What condition determines that the stack is full (FULL ? 1) during the Push operation?

c) describe the purpose, control function, hexa-decimal code and micro-operation sequence corresponding to subsequent computer instructions:

i. ADD
ii. BSA
iii. SKO
iv. CIL
v. HLT

[4 + one + five = 10]

Question 5.
a) Draw block diagram for micro-programmed control organization. Briefly describe the role of every block.

b) Convert the expression { six + ( eight – two ) * four } / three into postfix. DO NOT SOLVE

c) Write 3-address assembly instructions to perform X = ( A + B ) / (A – B)

d) provide at lowest 2 points of differences ranging from every of the subsequent pairs:

i. Immediate Addressing Mode and Implicit Addressing Mode
ii. Interrupt and Subroutine Call

[2 + two + two + four = 10]

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