Microprocessor & Microcontroller 2 - Dec 2013

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) Design memory system for 8086 with following specifications
(i) 8086 processor working in minimum mode at 10 MHz.
(ii) 32 KB EPROM using 8 KB devices.
(iii) 16 KB SRAM using 4 KB devices.
Explain the design and show address map. (12 marks) 1 (b) Draw and Explain typical I/O port pin structure of PIC 18.(4 marks) 1 (c) Describe mode set register of DMA controller 8257. (4 marks) 2 (a) Explain control word and status word of 8087 NDP.(10 marks) 2 (b) Describe addressing modes of PIC 18. (10 marks) 3 (a) Interface seven segment display with PIC 18 and explain its working.(10 marks) 3 (b) Draw and explain timing diagrams for read operations in minimum and maximum mode of 8086 microprocessor.(10 marks) 4 (a) Explain memory organization of PIC 18.(10 marks) 4 (b) With neat diagram explain interfacing of DMA controller 8257 with 8086 processor in minimum mode.(10 marks) 5 (a) Write an assembly language program for 8086 microprocessor to check whether a string of 10 characters represents Palindrome. (10 marks) 5 (b) Interface 8087 NDP with 8086 microprocessor and explain their working.(10 marks) 6 (a) What are the different methods of program looping? Explain each method in short. (10 marks) 6 (b) Describe how interface chip and I/O devices are synchronized. Explain it using pulse mode. (10 marks)

Write short notes on (any four):-

7 (a) Status register of PIC 18. (5 marks) 7 (b) Control flags of 8086.(5 marks) 7 (c) Assembler directives.(5 marks) 7 (d) Programming model of 8086. (5 marks) 7 (e) Advantages of memory segmentation. (5 marks)