Jawaharlal Nehru Technological University Kakinada 2009-1st Sem B.Tech Computer Science and Engineering Code No: V3128 / R07 III BTech Regular s, MICROPROCESSORS & INTERFACING ( CSE)

Code No: V3128 / R07
III B. Tech I Semester Regular Examinations, November 2009
MICROPROCESSORS & INTERFACING
(Common to CSE, IT, ECC & ICE)
Time: three Hours Max. Marks: 80
ans any 5 ques.
All ques. carry equal marks
*****
1. (a) With a neat diagram discuss the architecture of an 8086 microprocessor.
(b)Differentiate ranging from procedures and macros with certain examples.
[10+6]
2. (a) Write an assembly language program in 8086 to add 2 16-bit packed BCD
numbers.
(b)Write an assembly language program in 8086 to sort the array of 10 numbers in
ascending order. [8+8]

3.Explain the minimum mode and maximum modes of operation of 8086 with
corresponding timing diagrams.[16]

4.(a) Distinguish ranging from Mode set control word and BSR control word of 8255.
(b) Write an assembly language program in 8086 to generate a symmetrical square
wave with 1KHz frequency? provide the necessary circuit set up with a DAC. [6+10]

5.(a) explain in detail about the interrupt structure of 8086.
(b) define about the interrupt vector table of Intel processors.[8+8]

6.(a) explain the kinds of serial communication.
(b) Write an 8086 instruction sequence for receiving 50 characters using 8251
USART and store them in the memory. [8+8]

7.(a) What is meant by paging? discuss its advantages and disadvantages.
(b)Explain the procedure of converting linear address into physical address. [8+8]

8. (a) explain different addressing modes of 8051.
(b) discuss in detail about serial port operation in 8051 microcontroller. [8+8]

Earning:   Approval pending.