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Max. Marks: 100

10
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b)

E1130 Pages: 2

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019

Course Code: CS303
Course Name: SYSTEM SOFTWARE

PARTA
Answer all questions, each carries3 marks.
Explain three functions of Operating System

Write a sequence of instructions for SIC/ XE to find the average of three
numbers, BETA, GAMMA and DELTA.

Explain the format of the object program generated by a two-pass SIC
Assembler, highlighting the contents of each record type.

Explain the data structures used and their purposes in a two-pass assembler.

PART छ
Answer any two full questions, each carries9 marks.
Compare the features of Standard SIC and SIC/XE architecture.

Explain assembler directives. List any four assembler directives in SIC
machine.

Explain the concept of program relocation with an example.

Write the algorithms for Pass 1 and Pass 2 of a two-pass assembler

PART C
Answer all questions, each carries3 marks.
Differentiate Define record and Refer record.
Explain how forward references are resolved during program assembling in a
single pass assembler.

Give the absolute loader algorithm.

Explain the concept of Automatic Library Search.

PART D
Answer any two full questions, each carries9 marks.
Differentiate Program Blocks and Control Sections. Explain how address

calculation is performed in the case of Program Blocks.

13 a) Explain the working of Multipass Assemblers with an example.

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Duration: 3 Hours

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