Andhra University 2007 B.E Computer Science CS1203 – SYSTEM SOFTWARE university 2006 - Question Paper

B.E./B/Tech. DEGREE EXAMINATION,
NOVEMBER/DECEMBER 2006
Third Semester
Computer Science and Engineering
CS1203 – SYSTEM SOFTWARE
(Common to info Technology and B.E. (Part – Time) 2nd Semester
Regulation 2005)
(Regulation 2004)
Time: 3 hours Maximum: 100 Marks
ans ALL ques.
PART A – (10 ´ two = 20 marks)
1. elaborate the various registers used in SIC?
2. What is base relative addressing?
3. What is a symbol t able? How is it useful?
4. How are jump instructions assembled?
5. What is a Boostrap loader?
6. Mention the use of FIXUPP records.
7. How are MACROS defined?
8. elaborate positional parameters? How do they differ from keyword parameters?
9. Write the tasks accomplished by the document editing process.
10. What do you mean by tracing?
PART B – (5 ´ 16 = 80 marks)
11. (a) discuss in detail the architecture of SIC machine. (16)
Or
(b) (i) With instruction formats, discuss the instruction set of SIC/XE. (8)
(ii) Highlight the salient features of SIC/XE machine architecture. (8)
12. (a) (i) discuss the concept of program relocation. (11)
(ii) With syntax, discuss the usage of various symbol defining statements in

an Assembler. (5)
(b) (i) elaborate the various kinds of expressions supported by an Assembler?
discuss with examples. (8)
(ii) define the design of 1 Pass Assembler. (8)
13. (a) discuss the various machine independent loader features in detail. (16)
Or
(b) (i) With a neat flow diagram, discuss the working of Linkage editors. (8)
(ii) Write a note on MSDOS
Linker. (8)
14. (a) (i) explain in brief about the various data structures used by a macro
processor.
(ii) What is the need for concatenation of macro parameters? discuss how it
is done. (8)
Or
(b) Write notes on the following:
(i) Conditional macro expression (8)
(ii) Recursive macro expression. (8)
15. (a) With a neat diagram, discuss the structure of an editor.
Or
(b) explain in detail about the different problems related to an interactive debugging
system. (16)

Earning:   Approval pending.