MICROPROCESSOR

UTTARAKHAND TECHNICAL UNIVERSITY

B.TECH (SEM. IV) 

2012

SUB: Microprocessor

time : 3hr] 

Total marks :100

Note: Attempt all questions. Be precise in your answer.

SECTION A

Q1:- Attempt any four of the following :

4x5=20

1. Explain the evaluation of microprocessor in brief.
2. Draw the functional block diagram of Intel-8085.
3. State the function of temporary register of the 8085 microprocessor.
4. State the features of 8086. Also explain the difference between 8086 and 8085.
5. Define the term interrupt, exception, fault, and trap.
6. List the four major processing units in an 80826 microprocessor and describe the function of each.

SECTION B

Q2:- Attempt any two of the following :

10 x 2=20

1. Draw typical 8086 minimum mode configuration and explain functional of two signals used of two signals used in minimum mode.
2. Describe memory mapped 1/0 with suitable example. State its advantage over 1/0 mapped 1/0.
3. Draw internal architecture of 8086 microprocessor. Also explain the function EU.

SECTION C

 Q3:- Attempt any two of the following :

10 X 2=20

1. State any four addressing modes used in 8086 microprocessor. Identify Addressing modes used in each of the following 8086 instructions.
   (a) MOV BX.0354h
   (b) ADD AL,[BX+04J
   (c) MOV AX,[BX+SI]
   (d) MOV AX,[BX+SI+04]
2. Write an algorithm and an  8086 assembly language program to arrange numbers in ascending order.
3. What is memory segmentation? How memory segmentation is achieved in the  8086 microprocessor? State advantage of memory segmentation.

SECTION D

 Q4:- Attempt any two of the following :

10 X 2=20

1. Explain the different mode of operation of 8255. Describe the control word format of 8255 in 1/0 and 85R mode.
2. Explain the various functional block diagrams ot'8251.
3. Differentiate between macro& procedure, justify where micro is suitable than procedure with example.

SECTION E

Q5:- Attempt any two of the following :

10 X 2=20

1. Describe the operation of a flash-type A/D converter. What are its main advantages and disadvantages?
2. Describe the operation performed by each of the following 8087 instructions.
   (a) FLD TAX RATE
   (b) FMUL INFLATION FACTOR
   (c) FSQRT
   (d) FLDPI
   (e) FSTSW CHECK_-ANSWER
   (f) FPTAN
3. Differentiate the processor 8087 and 8089. Explain how 8087 is interfaced to 8086.

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Uttarakhand Technical University (Utu)

Best of luck (y)