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R.G.P.V. Bhopal (MP)

C.S. (6th Semester) EXAMINATION

MICROPROCESSOR & INTERFACING [ CS-601 ]

Time: 3Hrs     Max Marks: 100     Min Marks: 35
Note:Attempt any 5 questions.All question Carry equal marks

Q.1.(a) Compare the architectural features of Intel 8086 and Motorola 68000 processor.?
       (b) Write 8086 assembly language program to perform the following-
               (i) Subtract two 32 bit numbers
              (ii) Multiplication of two 16 bit unsigned numbers

Q.2.(a) Discuss the block diagram of 8155 and mention the salient features of 8155.
Compare 8155 and 8255.?
       (b) What are the different types of A/D converters ? Discuss any one.

Q.3. Explain the RS-232C serial I/O standard. What are the different signals required for data
transmission using hand-shaking. Mention the function of each signal.?

Q.4. Explain the different addressing modes of 8051 microcontroller. Explain the following
instructions with operations after execution :
               ANLA,A,adder
               MOV C,b
               MOV DPTR, #0170 H
               MOV A, @ R0
               CPL, A
Q.5.(a) Explain the function of the following in 8259 with neat block diagram :
                    (i) Inservice register
                    (ii) Priority resolver
                    (iii) Interrupt mask register
                    (iv) Cascade buffer/comparator
        (b) How do you extend 64 interrupts in 8259 using cascade mode ? Draw the diagram in support of the answer.?

Q.6.(a) Interface two 8 K RAM chips and 4K EPROM chips with 8088 so to form a completely working system configuration.?
       (b) Discuss the stepper motor interface with microprocessor.?

Q.7.(a) Discuss 8251 Internal Architecture with block diagram.?
        (b) What are the various operating modes of 8251 ? Discuss any one with transmit and receive formats ?

Q.8. Write short notes on any four of the following :
             (i) Superscale Architecture of Pentium
             (ii) RISC and CISC processor
            (iii) Applications of 8253
            (iv) USART
            (v) DAC

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