MU Electronics and Telecom Engineering (Semester 6)
Microprocessor & Microcontroller 2
December 2012
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Compare 8086 and 8088 microprocessor.
4 M
1 (b) Write Functions of following 8086 microprocessor pins
(i) QS0 & QS1
(ii) ?BHE
(iii) DT/?R.
6 M
1 (c) Explain Status register of pic18.
5 M
1 (d) Write a program for pic-18 to configure PORT B as output send 55 and AA alternately to PORT B.
5 M

2 (a) Explain interrupt structure of 8086 microprocessor.
10 M
2 (b) Explain difference between 8086, 80186, 80286, 80386 and 80486 microprocessors.
10 M

3 (a) Explain addressing modes of 8086 microprocessor.
10 M
3 (b) Explain following instructions of pic-18
(i) BTFSS F, b, A
(ii) XORWF F, d, a
(iii) ADDLW 0 × 25
(iv) MOVFF
(v) NEGF f, a
10 M

4 (a) Explain instruction format used in PIC-18.
10 M
4 (b) Explain maximum mode of 8086 microprocessor.
10 M

5 (a) Draw and explain interfacing of 8086-8259 PIC.
10 M
5 (b) Explain features of coprocessor 8087. Explain interfacing with 8086 microprocessor.
10 M

6 (a) Explain I/O port structure of PIC-18.
10 M
6 (b) A bank of 8 push button keys are connected to PORT B of PIC 18. Write a program to recognize the key pressed, debounce key and identify location in the key bank with numbers from 0 to 7.
10 M

7 (a) Explain Assembler directives used in 8086.
10 M
7 (b) Explain pipeline concept used in PIC-18.
10 M



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