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2 A COAL - Final Paper

This document appears to be an exam paper for a Computer Organization and Assembly Language course. It contains 6 questions assessing various topics related to computer architecture, assembly language, and memory. The exam is worth a total of 30 marks and students are instructed to attempt all questions. They are warned that mobile devices are prohibited and possession of unauthorized materials during the exam will result in failure of the course.

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MUHAMMAD AQEEL ANWAR KAMBOH
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132 views2 pages

2 A COAL - Final Paper

This document appears to be an exam paper for a Computer Organization and Assembly Language course. It contains 6 questions assessing various topics related to computer architecture, assembly language, and memory. The exam is worth a total of 30 marks and students are instructed to attempt all questions. They are warned that mobile devices are prohibited and possession of unauthorized materials during the exam will result in failure of the course.

Uploaded by

MUHAMMAD AQEEL ANWAR KAMBOH
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Reg.

No: Final Examination Spring 2022 Date: - - - 2022


_______________
Program: BSCS Class & Section: 3(A,B,C)
Course Code &Name:(CSC 2201)Computer Organization&Assembly Language Duration: 2.5 hrs
Instructor’s Name: Dr. Shahzad Latif, Mr. M. Aqeel Anwar Total: 30 Marks

Important Instructions:
Read all questions carefully first and then ask for the questions. Question paper related queries will not be
entertained after 1 hour for Final after the start of paper. Do not write anything on question paper unless
until specifically asked for. Question Paper to be returned along - with Answer Sheet.

Possession of Mobile Phone, Smart Watch or any Unauthorized Written Material will Result
in Cancellation of the Exam, and “F” Grade will be awarded for the entire Course.
-----------------------------------------------------------------------------------------------------------------------------------
Attempt all questions:

Q1: (Marks= 06)


A three-stage delay leads to the branch penalties for the three simplest prediction schemes listed in Table 2.
Find the effective addition to the CPI arising from branches for this pipeline, assuming the branch
frequencies in Table 1:
Table1
Frequencies
Unconditional branch 4%
Conditional branch, untaken 6%
Conditional branch, taken 12%
Table 2
Branch penalties for the three simplest prediction schemes for a deeper pipeline.
Branch scheme Penalty unconditional Penalty untaken Penalty taken
Flush pipeline 2 1 3
Predicted taken 4 2 4
Predicted untaken 3 1 2

Q2: (Marks=06=3+3)
Execute the following program
F= (A+8*B) – 4*(C + D)

(a) Stack Architecture Instructions Set


(b) Accumulator Architecture Instructions Set

Q3: (Marks= 05)


Page 1 of 2
Suppose DH = (6B)16, AH=(CB)16 , CF=0, and CL contains 5, Following instructions are
executed:
XOR DH,AH
SHR DH, 2
RCL DH, CL.
Show the status of DH register after each step in the following table format..

CL CF DH

Q4: (Marks= 05)


Write an assembly program to input week number (1-3) and print day of week name using
case structure:
1 = Friday
2 = Saturday
3 = Sunday

Q5: (Marks= 04)


Suppose that the processor has access to two levels of memory. Level 1
contains 1000 words and has an access time of 0.01 s; level 2 contains 100,000 words and
has an access time of 0.1 s. Assume that if a word to be accessed is in level 1, then the
processor accesses it directly. If it is in level 2, then the word is first transferred to level 1
and then accessed by the processor. Calculate the average access time of a word from
memory?

Q6: (Marks= 04)


Write a program to read a letter in lower case and print it into upper case letter.

***END***

Page 2 of 2

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