STUPIDSID
1 (a)
Expalin the instruction formats and addressing modes of SIC/XE machine architecture.
10 M
1 (b)
Generate the target address for the following objects codes:
(i) 032600 (ii) 010030
Content of X=000090; Content of B=006000; Content of PC=003000
(i) 032600 (ii) 010030
Content of X=000090; Content of B=006000; Content of PC=003000
4 M
1 (c)
Write a SIC/XE program to read 100 bytes record from a device 'F5' into BUFFER. Use immediate and registar-to-register instructions.
6 M
2 (a)
With an algorithm, explain pass-1 of a 2-pass assembler.
10 M
2 (b)
Generate the object code for each statement and write the object programs for the following SIC/XE program.
Given that: CLEAR=B4, LDA=00, LDB=68, ADD=18, TIX=2C, JLT=38, STA=0C
Given that: CLEAR=B4, LDA=00, LDB=68, ADD=18, TIX=2C, JLT=38, STA=0C
| FIRST | CLEAR | 0 |
| LDA | #0 | |
| +LDB | #TOTAL | |
| BASE | TOTAL | |
| LOOP | ADD | TABLE, X |
| TIX | COUNT | |
| JLT | LOOP | |
| STA | TOTAL | |
| COUNT | RESW | 1 |
| TABLE | RESW | 2000 |
| TOTAL | RESW | 1 |
| END | FIRST |
10 M
3 (a)
With required data structures and processing logic, explain the implementation of literals within an assembler.
7 M
3 (b)
What are the program blocks? How multiple program blocks are handled by an assembler?
7 M
3 (c)
Compare a two-pass assembler with a single pass-assembler. How forward reference are handled in one-pass assembler?
6 M
4 (a)
Define program relocation. Explain the different ways of doing program relocation.
6 M
4 (b)
With an algorithm, explain pass 1 of a linking loader.
8 M
4 (c)
Expalin the facilities available in MS-DOS linker for program linking.
6 M
5 (a)
With a neat diagram, explain the working of a typical editor structure.
8 M
5 (b)
Explain the debugging functions and capabilities of interactive debugging system.
8 M
5 (c)
List the four task of a document editing process.
4 M
6 (a)
Define MACRO. Briefly expalin the various data structure used in the design of MACRO PROCESSOR.
8 M
6 (b)
With an example, explain generation of unique labels in macros.
6 M
6 (c)
Explain the advantages and disadvantages of general purpose macro processors.
6 M
7 (a)
With an example, explain the structure of a LEX program.
7 M
7 (b)
Write regular expression to identify the following:
(i) Identifie (ii) Decimal number (iii) -ve integer (iv) +ve fraction
(i) Identifie (ii) Decimal number (iii) -ve integer (iv) +ve fraction
8 M
7 (c)
Write a short note on parser-lexar communication.
5 M
8 (a)
Define YACC tools. What are tow types of conflicts in YACC? Give examples.
8 M
8 (b)
Write a YACC program to evaluate an arithmetic expression involving operators +, -, *, /.
7 M
8 (c)
Write a short note on shift/reduce parsing.
5 M
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