Microprocessors and Microcontollers - 1 (MPMC) Semester 5 (3 Hours) May 2012

Microprocessors and Microcontollers - 1 (MPMC) Semester 5 (3 Hours) May 2012
GN-7022 [Total Marks : 100]
N.B. :	(1)	Question No. 1 is compulsory.
	(2)	Solve any four questions out of remaining six questions.
	(3)	Figures to the right indicate full marks.
	(4)	Assume suitable data if necessary.
1.	(a)	With the help of a diagram explain the architecture of 8085 microprocessor.	08
	(b)	Write an assembly language program to multiple two 8 bit numbers for execution an 8085 processor.	04
	(c)	Write an assembly level program to enable interrupt of 8051 and set their priority to low.	04
	(d)	Describe any four features of ARM processor.	04
2.	(a)	Explain interrupt structure of 8085 with a neat diagram.	10
	(b)	With suitable diagrams explain handshake mode of 8155.	10
3.	(a)	Describe addressing modes of ARM processor.	10
	(b)	Explain the internal structure of Port 1 and Port 3 of 8051.	10
4.	(a)	Design a 8085 based microprocessor system with the following specifications : CPU of 6 MHz EPROM of 8KB chips, RAM of 8KB using 4KB chips, one 8255 PPI at addres 20H and one 8279 at address 30h. Discuss the circuit and show the memory and I/O map.	20
5.	(a)	Explain ICWs and OCWs of 8259 PIC	10
	(b)	Write a program to convert hexadecimal number to BCD number without using DAA instruction.	10
6.	(a)	Discuss relative merits and demerits of various data transfer techniques.	06
	(b)	Write a program to transmit a byte using SOD pin.	08
	(c)	Write a program to generate a 1KHz frequency square wave using 8254.	06
7.	Write short notes (any four) :-		20
	(a)	Serial communication in 8051.
	(b)	Memory related instruction of ARM microcontroller.
	(c)	8251 USART
	(d)	Reentrant and recursive subroutines
	(e)	8085 flags and their usage.