May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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PROGRAMMING CONCEPTS–III 4-41
3. How does the instruction CLD function in the case of the following two instructions?
a) REPMOVSB
b) REP MOVSW
4. Which is the pointer register to be used when using the extra segment in string
operations?
5. Why does the LODS instruction not use the REP prefix?
6. Do the following instructions function differently? In what way?
a) REPNE CMPSB
b) REPE CMPSB
7. For REPNZ CMPSB, what are the conditions under which the loop is exited?
8. Distinguish between a near and a far call.
9. What is the difference in the functioning of the RET and RET n instructions?
10. What is meant by the term ‘parameter passing’ ...
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