SPPU Information Technology (Semester 4)
Processor Architectures & Interfacing
May 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Answer any one question from Q1 and Q2
1 (a) List and explain any three assembler directives used in 80386 programming.
6 M
1 (b) Explain pipelined bus cycles for READ operation with neat diagram.
6 M

2 (a) With respect to following points explain ? Assembler, Linker and Debugger- 1) Function 2) Input and Output 3) Command
6 M
2 (b) Explain the significance of the following signals of the 80386.
i) BE0# - BE3#
ii) PREQ
iii) NA#
6 M

Answer any one question from Q3 and Q4
3 (a) What is TLB? With diagram explain role of TLB of 80386.
6 M
3 (b) How is I/O level protection achieved? Explain I/O permission bit map.
6 M

4 (a) What do you mean by dual core processor? List down the features of dual core processor.
6 M
4 (b) Explain how interrupts are handled in protected mode of 80386.
6 M

Answer any one question from Q5 and Q6
5 (a) Identify and justify addressing mode of the following 8051 instructions:
i. MOVX A, @DPTR
ii. MOVC A, @A + PC
iii. MOV DPTR, #2550H
6 M
5 (b) How many Register Banks does 8051 have? Explain with the help of diagram. How to change the current working register bank?
7 M

6 (a) Explain the following instructions in 8051:
(i) MOV A, Rn
(ii) DIV AB
(iii) SWAP A
6 M
6 (b) Draw and explain Architecture of 8051 Microcontroller.
7 M

Answer any one question from Q7 and Q8
7 (a) List operating modes of Timer of 8051 and explain any two of them.
7 M
7 (b) Explain the different types of interrupt in 8051.
6 M

8 (a) For serial communication, what are the SFR's used in 8051? Explain in detail with its structure.
7 M
8 (b) Explain IE and IP SFR?s of 8051 Microcontroller.
6 M



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