Microprocessor & Microcontroller 2 - Dec 2014

Electronics Engineering (Semester 6)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) At reset, interrupts in 8086 processor are disable. Give reason.(4 marks) 1 (b) List the differences between 8086 and 8088 processor.(4 marks) 1 (c) Explain the pipelining features of PIC architecture.(4 marks) 1 (d) Explain the significance of HOLD, RESET and READY signals in 8086 processor.(4 marks) 1 (e) Explain status register in PIC controller.(4 marks) 2 (a) Explain the data and program memory map in PIC architecture.(10 marks) 2 (b) With the help of a neat flowchart/algorithm write a program in 8086 assembly to obtain the largest and smallest number from a given list of numbers. Assume the relevant details.(10 marks) 3 (a) Explain 8086-8087 coprocessor configuration in maximum mode of operation.(10 marks) 3 (b) Explain with example addressing modes in PIC architecture.(10 marks) 4 (a) Write a detailed note on the interrupt structure of 8086 processor.(10 marks) 4 (b) Using string instructions write a program in 8086 assembly to copy a block ten bytes initialized in data segment to extra segment. Assume the necessary details.(10 marks) 5 (a) Explain the architecture of 8086 processor. What is the need for memory segmentation.(10 marks) 5 (b) Write a note on the various instruction formats for PIC instructions.(10 marks) 6 (a) Using table-pointer scheme of program memory addressing for PIC architecture, write a program in PIC assembly to add ten 8-bit numbers. Consider worst case data condition.(10 marks) 6 (b) Explain with one example the addressing modes of 8086 microprocessor.(10 marks)

Write short notes on:

7 (a) Operation modes of 8237 DMA Controller.(5 marks) 7 (b) I/O modes of 8255 PPI.(5 marks) 7 (c) PIC 18 Reset.(5 marks) 7 (d) Address modes of 8086 microprocessor.(5 marks)