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Microprocessor Programming Question Paper

Microprocessor Programming

Course:Computer Science

Institution: Kenya Methodist University question papers

Exam Year:2012

CISY 311: MICROPROCESSOR PROGRAMMING EXAMINATION

QUESTION ONE (COMPULSORY)
a) Describe how assembly languages relate to machine language. [4 marks]
b) Explain the concept of portability as it applies to programming languages. With reasons, explain whether an assembly program is portable. [4 marks]
c) Translate the following C++ expression to assembly language.
x = (y*4) + 3 [10 marks]
d) Convert the following Hexadecimal numbers to their Binary equivalent
i) 0126F9D4
ii) 6ACDFA95
iii) F69BDC2A [6 marks]

e) Describe the three basic modes of operation of Intel IA-32 architecture. [6 marks]

INSTRUCTION:
Answer any two questions from this section

QUESTION TWO
a) Describe at least four (4) CPU status flags. [8 marks]

b) Write an assembly program that subtracts three integers using only 16 bit registers. Insert a statement that displays the register values. [12 marks]

QUESTION THREE
Write an assembly language program that displays the following information on the screen.
Name:
Date_of_Birth:
Course: [20 marks]

QUESTION FOUR
a) Addressing modes refer to the way operands are presented in the operation. State at least FIVE addressing modes used by an 8086 processor, giving appropriate examples. [10 marks]
b) MOV is a flexible operand as long as some four rules are followed. State these four rules. [4 marks]
c) Describe, with examples, at least THREE arithmetic instructions used in assembly programming. [6 marks]
QUESTION FIVE
Write an assembly program that evaluates the expression;
rval=-xval + (yval - zval)
where rval, xval, yval and zval are known constants. [20 marks]

Microprocessor Programming Question Paper

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