Skip to content
EndsemMay 20252019 patternSE Comp

Microprocessor SPPU Endsem Question Paper May 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
May 2025
Max. marks
70
Time
2½ Hours
Semester
IV
Paper code
[6402]-43

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 diagram must be drawn wherever necessary.
  3. 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) Local Descriptor Table

      Also asked:Dec 2025

      [6]
    2. b)

      Draw and explain the general descriptor format.

      Also asked:Dec 2025

      [6]
    3. c)

      Explain the process of Segment translation in detail.

      Also asked:May 2024

      [6]

  2. Q2

    1. a)

      Explain following in detail i) GDTR ii) LDTR & iii) IDTR

      [6]
    2. b)

      Draw and explain segment selector format.

      Also asked:Dec 2025

      [6]
    3. c)

      Explain the process of page translation in detail.

      [6]

  3. Q3

    1. a)

      Explore the need for a protection mechanism in 80386.

      Also asked:Dec 2025 ·May 2024

      [6]
    2. b)

      List and explain various Privilege Instructions.

      Also asked:May 2024

      [6]
    3. c)

      Explore five aspects of protection applied in segmentation. 2

      [5]

  4. Q4

    1. a)

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

      Also asked:Dec 2025

      [6]
    2. b)

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

      [6]
    3. c)

      What is call gate? Explain how it is used in calling functions with higher privilege levels.

      [5]

  5. Q5

    1. a)

      Draw and Explain the Task State Segment of 80386.

      Also asked:Dec 2025 ·May 2024

      [6]
    2. b)

      Explore the role of Task Register in multitasking and the instructions used to modify and read Task Register.

      [6]
    3. c)

      List and explain various features of virtual 8086 Mode.

      Also asked:May 2024

      [6]

  6. Q6

    1. a)

      Explain the TSS descriptor of 80386 with a neat diagram.

      Also asked:Dec 2025

      [6]
    2. b)

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

      Also asked:Dec 2025 ·May 2024

      [6]
    3. c)

      Explore memory management in the virtual 8086 Mode.

      [6]

  7. Q7

    1. a)

      Explain the process of Enabling and Disabling Interrupts is 80386.

      [6]
    2. b)

      Explain different types of exceptions in 80386 with suitable examples.

      Also asked:May 2024

      [6]
    3. c)

      Differentiate between Microprocessor and Microcontroller.

      [5]

  8. Q8

    1. a)

      How are interrupts identified in 80386?

      [6]
    2. b)

      Explain the following exceptions in brief i) Overflow, ii) Divide error iii) invalid opcode

      Also asked:May 2024

      [6]
    3. c)

      With the help of neat diagram explain the architecture of typical microcontroller. … … …

      Also asked:May 2024

      [5]