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EndsemDec 20252019 patternSE Comp

Microprocessor SPPU Endsem Question Paper Dec 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Microprocessor questions
Subject code
210254
Pattern
2019 pattern
Exam
Endsem
Session
Dec 2025
Max. marks
70
Time
2½ Hours
Semester
IV
Paper code
[6582]-38

Printed for: S.E. (Computer Engineering)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Neat diagrams must be drawn wherever necessary.
  3. Black Figures to the right indicate full marks.
  4. Assume suitable data if necessary.

Questions

  1. Q1

    1. a)

      Explain following in detail i) Global Descriptor Table ii) Interrupt Descriptor Table

      Also asked:May 2025

      [6]
    2. b)

      Draw and explain segment selector format.

      Also asked:May 2025

      [6]
    3. c)

      With the necessary flowchart, explain the complete address translation process in 80386.

      Also asked:May 2024

      [6]

  2. Q2

    1. a)

      Explain the use of following instructions in detail. i) SGDT ii) LLDT iii) SIDT

      Also asked:May 2024

      [6]
    2. b)

      Draw and explain the general descriptor format.

      Also asked:May 2025

      [6]
    3. c)

      With the necessary diagram, explain the logical to linear address translation process of 80386.

      Also asked:May 2024

      [6]

  3. Q3

    1. a)

      Explain different levels of protection? State the rules of protection check.

      Also asked:May 2025

      [6]
    2. b)

      Write a short note on CPL, DPL, and EPL.

      [6]
    3. c)

      Explain conforming and non-conforming code segments.

      [5]

  4. Q4

    1. a)

      Explore the need for a protection mechanism in 80386.

      Also asked:May 2025 ·May 2024

      [6]
    2. b)

      Define the functions of Type Checking and Limit Checking in protection.

      [6]
    3. c)

      Explore the role of various fields in page level protection.

      [5]

  5. Q5

    1. a)

      Define task switching and explain the steps involved in task switching operation.

      Also asked:May 2025 ·May 2024

      [6]
    2. b)

      Explain the TSS descriptor of 80386 with a neat diagram.

      Also asked:May 2025

      [6]
    3. c)

      Differentiate between real mode and virtual mode.

      [6]

  6. Q6

    1. a)

      Draw and explain task gate desciptor of 80386.

      [6]
    2. b)

      Draw and Explain the Task State Segment of 80386.

      Also asked:May 2025 ·May 2024

      [6]
    3. c)

      With the necessary diagram, explain entering and leaving the virtual mode of 80386.

      Also asked:May 2024

      [6]

  7. Q7

    1. a)

      With the help of neat diagram explain the process of handling interrupts in protected mode.

      Also asked:May 2024

      [6]
    2. b)

      Differentiate and Explain the Interrupt gate and Trap gate descriptor.

      [6]
    3. c)

      Explain various features of the 8051 microcontroller.

      Also asked:May 2024

      [5]

  8. Q8

    1. a)

      Explain the following exception conditions with an example. Faults, Traps, and Aborts.

      [6]
    2. b)

      What is the error code? Explain with the necessary diagram.

      [6]
    3. c)

      List and elaborate on different applications of microcontrollers. ♣♣♣

      [5]