Microprocessors and Peripherals - Dec 2015

Electronics Engineering (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 interrupts of 8085.(5 marks) 1 (b) Compare min-mode with max-mode of 8086.(5 marks) 1 (c) Write an 8086 assembly language program to divide 16-bit number by 4 bit number.(5 marks) 1 (d) Explain System bus arbitration in Loosely Coupled System.(5 marks) 2 (a) What is DMA. Explain 8237DMAC.(10 marks) 2 (b) What is segmentation? Give usages, advantages of segmentation.(5 marks) 2 (c) Compare 8085, 8086 and 8088 microprocessors.(5 marks) 3 (a) Design 8086 based system for following specifications:
8086 operating at 3 Mhz; 6KByte of EPROM, 3KByte of ROM; 2 i/o ports.(15 marks) 3 (b) Explain interrupt acknowledge (INTA) cycle of 8086.(5 marks) 4 (a) Explain parameter passing methods in 8086.(10 marks) 4 (b) Write an 8086 assembly language program to divide 32 bit number by 8 bit number.(5 marks) 4 (c) What is instruction pipelining? Give advantages and challenges associated with it.(5 marks) 5 (a) Explain interfacing of 8259 with 8086 (Cascade mode).(10 marks) 5 (b) Explain Closely Coupled System (CCS).(5 marks) 5 (c) Write short notes on assembler directives.(5 marks) 6 (a) Give applications of interrupts. Explain interrupts of 8086.(7 marks) 6 (b) Explain low-speed (slow) peripheral (memory) interface with 8086 with wait states with the help of timing diagram.(7 marks) 6 (c) Explain 8087 math co-processor and its usages(6 marks)