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MICROPROCESSOR 8085 MP 4TH SEMESTER
EXAM/ECE/CSE/IT/EEE/6129/0624/May 2015

    Microprocessor 8085 PSBTE May 2015 Paper                                                                SECTION-A

Q1. Do as directed.                                                                                             15×1=15

  1. EPROM Stands Erasable Program Read Only Memory.

  2. 8085 has 74 Basic instructions.

  3. Instruction is used to load 16 bit is LHLD 

  4.  TRAP is the highest priority Interrupt.

  5. RST stands for Restart Instructions .

   (ii) Do as directed

  1. A programmable device similar to CPU of computer is known as                                                                                                                                                       (a) Central processing unit                      (b) microprocessor                   (d) Microcomputer                     (e) PLA                                                                       ANS (d) Microcomputer 

  2. The address bus of 8085 is 16 bit and hence the memory which can be accessed by this address bus is

             (a) 112k                                                      (b) 4k

             (c) 16 k                                                        (d) 64 k

           ANS (d) 64KB

        3.A state during which nothing happens is known as

            (a) STA                                                          (b) NOP

           (c)  STC                                                          (d) opcode

       4. Mov A, B has

          (a) 1 machine cycle                                        (b) 2 machine cycle

          (c) 3 machine cycle                                         (d) 4 machine cycle             

      ANS(a) 1 Machine Cycle

       5. Which of the following is not present in 8085

          (a) PORT A                                                         (b) PORT C

          (c) PORT B                                                         (d) ALU

          ANS (d) ALU

                      SECTION-B

Q2. Attempt any five questions.                                                 5×6=30

  1. Explain the various steps involved in execution of program?

  2. How interrupt are handled in 8085 ?

  3. Differentiate between programmed I/O & Interrupt driven I/O ?

  4. Discuss various addressing mode of 8085 ?

  5. Explain various function blocks of microprocessor ?

  6. Explain the timing diagram ofMVI A data ?

  7. Write a assembly language program to two`s compliment the 8 bit number?

                       SECTION-C

Q3. Attempt any three questions.                                                            3×10=30

        Q3 Explain the pin out Diagram of 8085 and explain functions of each pin?

       Q4 Compare the important feature of z80, 6800, 8085 processor?

       Q5 Write a short note on ? (a)  8253                     (b) 8251

       Q6 Explain stack and its function?

       Q7 Explain the following?

        (a) Instruction cycle              (b) machine cycle             (c) t state

        (d) Fetch cycle                       (e) execute cycle

microprocessor 8085 mp
may 2015 DIPLOMA PAPER SOLUTION

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Section a:- microprocessor 8085 mp may 2015 diploma paper solution

8 Bit

64KB

Fetched

Erasable Program Read Only Memory. 

Four 

Decimal Adjust Accumulator

TRAP

Direct Memory Access.

SIM instruction 

Bit Set Reset Mode.

JK Engineering Classes  BE Paper May 2018 Solution Click Here

Section B : Microprocessor PAPER MAY 2015 solution here

Special purpose registers of 8085 Click Here.

Solution Click Here

Solution Click Here

Poor Power Factor

Advantages of Electrical Energy

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microprocessor mp 8085 MAY 2015 diploma PAPER

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Section c microprocessor 8085 MAY 2015 paper SOLUTION HERE

 Solution Click Here

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