Microprocessor and Peripherals - May 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 following pins of microprocessor 8085
(a) ALE
(b)SOD/SID
(c)TRAP
(d)HOLD
INTA(5 marks) 1(b) Explain Control word 04 8254 Timer.write control word for Counter 0,Mode-2,R/W LSB,BCD counter.(5 marks) 1(c) Write features of 80286 microprocessor(5 marks) 1(d) What are advantages of memory segmentation of 8086.(5 marks) 2 (a) Draw and Explain Architecture of 8085 Microprocessor.(10 marks) 2 (b) Explain Minimum mode of 8086 microprocessor.draw timing diagram for write operation in minimum mode of 8086 and explain it.(10 marks) 3 (a) Draw and explain interfacing of 8086 with 8255 I/O mapped I/O mode.(10 marks) 3 (b) Write a program to generate 1KHz frequency square wave using 8254,if clock frequency 0f 8086 is 1M Hz.(10 marks) 4 (a) Draw and 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) Design 8086 microprocessor based system using minimum mode with following specification:
8086 microprocessor working at 8 MHz
32KB EPROM Using 16K devices
32KB EPROM Using 16K devices
32KB SRAM using 16K devices
Clearly show memory map with address ranges.Draw a neat schematic.(10 marks) 5 (b) Explain interrupt structure of 8086.(10 marks) 6 (a) Write a program for 8086 microprocessor to exchange memory block of 10bytes of location 30000 and 40000(10 marks) 6 (b) Draw and explain an architecture of Pentium processor.(10 marks)