Microprocessor & Microcontroller 2 - Dec 2012

Electronics & Telecomm. (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) Compare 8086 and 8088 microprocessor.(4 marks) 1 (b) Write Functions of following 8086 microprocessor pins
(i) Q_S0 & Q_S1
(ii) ?BHE
(iii) DT/?R.(6 marks) 1 (c) Explain Status register of pic18.(5 marks) 1 (d) Write a program for pic-18 to configure PORT B as output send 55 and AA alternately to PORT B.(5 marks) 2 (a) Explain interrupt structure of 8086 microprocessor.(10 marks) 2 (b) Explain difference between 8086, 80186, 80286, 80386 and 80486 microprocessors. (10 marks) 3 (a) Explain addressing modes of 8086 microprocessor.(10 marks) 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 marks) 4 (a) Explain instruction format used in PIC-18. (10 marks) 4 (b) Explain maximum mode of 8086 microprocessor. (10 marks) 5 (a) Draw and explain interfacing of 8086-8259 PIC.(10 marks) 5 (b) Explain features of coprocessor 8087. Explain interfacing with 8086 microprocessor. (10 marks) 6 (a) Explain I/O port structure of PIC-18.(10 marks) 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 marks) 7 (a) Explain Assembler directives used in 8086.(10 marks) 7 (b) Explain pipeline concept used in PIC-18.(10 marks)