Microprocessor and Peripherals - Dec 2014

Electronics & Telecomm. (Semester 4)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Explain function of interrupt pins of microprocessor 8085.(5 marks) 1 (b) Explain control word of 8254 timer. Write control word for Counter 1, Mode-3, R/W MSB, binary counter.(5 marks) 1 (c) Write features of 80386 microprocessor.(5 marks) 1 (d) Explain features of coprocessor 8087.(5 marks) 2 (a) Draw and Explain Architecture of 8085 Microprocessor.(10 marks) 2 (b) Explain modes of PPI 8255.(10 marks) 3 (a) Draw and explain interfacing of 8086 in maximum mode with 8259 in cascade mode.(10 marks) 3 (b) Explain maximum mode of 8086 microprocessor. Draw timing diagram for write operation in maximum mode of 8086 and explain it.(10 marks) 4 (a) Draw explain interfacing of DAC 0808 with 8086 using 8255. Write a program to generate square wave.(10 marks) 4 (b) Draw and interface diagram of 8086 microprocessor and 8087 NDP, also various interface signals and co-processor working with host processor.(10 marks) 5 (a) A design 8086 microprocessor based system using minimum mode with following specification:-
i) 8086 microprocessor working at 8 Mhz
ii) 16KB EPROM using 8k devices
ii) 16KB SRAM using 8K devices
Clearly show memory map with address ranges. Draw a neat Schematic.(10 marks) 5 (b) Which are the different types of interrupt supported by 8086? Explain interrupt vector table of 8086.(10 marks) 6 (a) Write a program for 8086 microprocessor to exchange memory block of 10bytes of locaton 30000 and 40000.(10 marks) 6 (b) Draw and explain an architecture of 80286 processor.(10 marks)