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ALLAMA IQBAL OPEN UNIVERSITY, ISLAMABAD
(Department of Computer Science)
WARNING
1.
2.
PLAGIARISM OR HIRING OF GHOST WRITER(S) FOR SOLVING
THE ASSIGNMENT(S) WILL DEBAR THE STUDENT FROM AWARD
OF DEGREE/CERTIFICATE, IF FOUND AT ANY STAGE.
SUBMITTING ASSIGNMENTS BORROWED OR STOLEN FROM
OTHER(S) AS ONE’S OWN WILL BE PENALIZED AS DEFINED IN
“AIOU PLAGIARISM POLICY”.
Course: Computer Organization and Assembly (3453)
Level: BS (CS)
Semester: Spring, 2016
Total Marks: 100
ASSIGNMENT No. 1
Note: All questions carry equal marks
Q. 1 a)
b)
Q. 2 a)
b)
Q. 3 a)
b)
In which kind of problem domains, assembly language can be readily
applied?
How a program is loaded into memory and then executed?
What is the role of segment registers to generate real-mode memory
addresses?
Generate the physical addresses of the following data or instructions or data:
CS = 0AC2 h
IP = 200h
DS = 30A0 h
BX = 4AC0 h
SS = 9002 h
SP = 1010 h
Describe the typical arrangement of elements found in IBM PC in first 1
Mega Byte.
What is the role of FLAG register during the execution of program?
Q. 4 When Intel microprocessor operates in 32-bit mode then how can it generate
addresses to address the memory above 1MB using protected-mode memory
management?
Q. 5 a)
b)
Define an array of 100 elements of type and initialize with the maximum
value an element can store.
If we omit the ‘$’ at the end of a string data definition (give below), what
possibly can happen to that program during execution?
(Greeting DB “Glad to meet you”)
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ASSIGNMENT No. 2
Note: All questions carry equal marks
Q. 1 Consider the double word 12347856H? How this double word will be stored in
memory in little endian format? What is its equivalent in big endian format?
Q. 2 Write a program to set and clear.
a)
Zero Flag
b)
Sign Flag
c)
Over flow Flag
d)
Carry Flag
Q. 3 What is the role of stack in Intel Microprocessor? Write its major applications.
Q. 4 a)
b)
How conditional jumps that use the FLAGS work in Assembly language?
Will the following code jump to the label named Target (Yes/No)? Explain
reason in each.
mov ax, 8109h
cmp ax, 26h
jg Target
Q. 5 Write a program in Assembly Language to read input string from the user
(terminated by ENTER key). Then prompt the user to find the occurrence of first
digit (entered by the user) in the string and return its index number.
3453 Computer Organization and AssemblyCredit Hours: 4(3 + 1)
Recommended Book:
Assembly Language for Intel-Based Computers, 3rd Edition, by Kip R. Irvine
Course Outlines:
Unit-1
a)
b)
c)
Introduction
Context of Assembly Language
Introduction to assembly language, Assembly Language Applications
Data representation
Binary numbers, Converting Binary to Decimal, Hexadecimal Number,
Signed Numbers, Character Storage
Introducing Assembly Language
Language Instructions, A Sample Debug Program, Debug Commands
2
Unit-2
a)
b)
c)
Unit-3
a)
b)
c)
d)
Unit-4
a)
b)
c)
d)
e)
Unit-5
a)
b)
c)
Hardware and Software Architecture
16-BIT Intel Processor Architecture
Central Processing Unit, Registers, Status and Control Registers, Flags;
Instruction Execution Cycle, Intel Microprocessor Family
32-BIT Intel Processor Architecture
Improved Execution Cycle, 32-bit Register Set
Operating System and Memory
Memory Architecture, Video display, Absolute Address Calculation-Video
Adapter, Memory (RAM), Video RAM
Assembly Language Fundamentals
Basic Elements
Constants and Expressions, Statements, Names, Sample Hello Program
Assembling Linking and Debugging
Microsoft Assembler (MASM)
Data Allocation Directive
Define Byte (DB), Define Word (DW), Define Doubleword (DD)
Symbolic Constants
Equal-Sign Directive, EQU Directive, TEXTEQU Directive
Instructions
MOV Instruction
Operands with Displacements, XCHG Instruction
Arithmetic Instructions
INC and DEC Instructions, ADD Instruction, SUB Instruction, 1 lags
Affected by ADD and SUB
Basic Operand Types
Register Operands, Immediate Operands, Direct Operands, Direct Offset
Operands
Extended Addition and Subtraction
ADC Instruction, SBB Instruction
Multiplication and Division
MUL Instruction, IMUL Instruction, DIV Instruction, IDIV Instruction,
CBW, CWD, CDQ, and CWDE Instructions, Preventing Divide Overflow
Using the Assembler
More About the Assembler and Linker
Source Listing File, Map File, Assembling and Linking with MS-DOS Batch
Files, Memory Models, Target Processor Directives
Operators and Expressions
Arithmetic Operators, OFFSET, SEG, PTR, LABEL, AND EVEN
JMP and LOOP Instructions
JMP Instructions, LOOP Instruction
LOOP, LOOPW, LOOPD Instructions
3
d)
Unit-6
a)
b)
c)
Unit-7
a)
b)
c)
Indirect Addressing
Indirect Operands,
Displacement
Base
an
Indexed
Operands,
Base-Index
with
Conditional Processing
Boolean and Comparison Instructions
The Flags Register, AND Instruction, OR Instruction, XOR Instruction,"
NOT Instruction, NEG Instruction, TEST Instruction, CMP Instruction,
CMPXCHG Instruction
Integer Arithmetic
Shift and Rotate Instructions, SHL Instruction, SHLD/SHRD Instructions,
SHR Instruction, SAL and SAR Instructions, ROL Instruction, ROR
Instruction, RCL and RCR Instructions
Sample Applications
Shifting Multiple Bytes on the 8086, Fast Multiplication and Division
Conditional Jumps
Code Generation for Conditional Jumps, Conditional Jump Examples
Conditional Loops
LOOPZ and LOOPE Instructions, LOOPNZ and LOOPNE Instructions
High-Level Logic Structures
Simple IF Statement, Compound IF Statement, WHILE Structure, REPEATUNTIL Structure, CASE Structure, Table of Procedure Offsets.
Unit-8
a)
b)
c)
d)
e)
f)
g)
Software Interrupts
INT Instruction, Redirecting Input-Output
MS-Dos Function Calls
Output Functions, Input Functions, Date/Time Functions
BIOS-Level Keyboard Input (INT16H)
BIOS-Level Video Control (INT 10H)
Disk Storage Fundamentals
Drive and Directory Manipulation
Unit-9
a)
b)
c)
d)
Procedures and Interrupts,
Stack Operations
Procedures,
Procedure Parameters
Structures
Macros
Macros with Parameters, Defining a Macro, Example: mDisplayiStr, Macro,
mGotoRowCol macro
e)
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