M.Sc. DEGREE EXAMINATION, APRIL/MAY 2018.
Second semester
Physics
Paper IV MICROPROCESSORS AND PERIPHERAL INTERFACE

2 20724
Time 3 Hours Max. Marks 100
SECTION — A
(Short Answer Type)
Answer any FIVE of the following. 8 40 Marks)
1. Briefly describe the hardware related to interfacing with memories and I/O ports.
2. Write a simple program for addition of two 16-bit numbers.
3. Explain the principle and working of debuggers and emulators in 8086.
4. Write a simple program to find the largest number from a given series of
hexadecimal numbers.
5. Give an account on the working of keyboard controller.
6. Explain the principle and working of an assembler.
7. Explain the operation of programmable interrupt controller 8259.
8. Give an account on the working of programmable serial interface 8251.
SECTION — B
(Essay Answer Type)
Answer ALL questions. 15 60 Marks)
9. Explain the internal architecture of Intel 8086 microprocessor with help of its
functional block diagram.
Or
Write down the complete instruction set of 8086 microprocessor.

10. Explain the principle and working of MASM86 assembler. Give the list of
assembler directives.
Or
Discuss in detail about the working of Assembly Language Program
Development Tools-editor with examples.
11. Give a detailed account on the working of linkers, locators and emulators
using ALP development tools.
Or
Write a program in MASM86 to convert BCD numbers into Hexadecimal
numbers. Give two examples.
12. Discuss in detail about the principle and working of a DMA controller 8237.
Write down the applications of DMA controller.
Or
Describe the pin configuration and explain the working of programmable
interval timer 8254. List the applications of 8254.
———————