Microprocessor and Interfacing- Important Questions

Unit:1

1.                   Draw and explain in detail the Block diagram of 8085 Microprocessor unit (MPU) architecture? 

2.                   Draw and explain in detail the Pin diagram of 8085 Microprocessor unit (MPU)?

3.                   Draw the Timing diagram and explain IN and OUT Instructions      

Unit:2

1.       Define Steppermotor .Explain the interfacing of a stepper motor to 8085 microprocessor with    necessary circuit diagram. Write an ALP to rotate the stepper motor clockwise direction          

2.       What is stack and stack pointer? List stack related instructions? Explain working of PUSH and POP instruction      

3.       With the help of block diagram explain the internal architecture of IC 8257 DMA controller.                                   

4.       Explain the block diagram of 8259 Programmable interrupt controller. What are its features? Explain the interrupt operation of 8259 in the simplest format.

Unit:3

1.                   Explain the block diagram of 8251A programmable communication interface. What are its features? Explain the various modes 8251 in the simplest format

2.                   With the help of block diagram explain the internal architecture of IC 8255 and describe its working in IO mode.

3.                   Write short note on any one of the following.

(a)    Different working modes of IC 8254

4.                   With the help of block diagram explain the internal architecture of IC 8279 Keyboard / Display interface

Unit:4

1.                   Draw and explain Pin diagram of 8086? Also explain the concept of Memory segmentation in microprocessor with diagram

2.                   Draw and explain the architecture of 8086A

3.                   Define Interrupts and list types of interrupts in 8086

Unit:5

1.       What do you understand by the term Addressing mode ? Explain the Addressing modes supported by 8086 by giving suitable examples.      

2.       Explain the following directives and operators with suitable examples:

i)SEGMENT  ii)ASSUME   iii)DUP    iv)SIZE                 

Microprocessor and Interfacing Assignment:2

Microprocessor and Interfacing Assignment:2

1.       Define Microprocessor. List the features of  8085 Microprocessor

2.       Difference between 8085 and 8086 Microprocessor        

3.       What is interrupt? List hardware interrupts available on 8085     

4.       Write a ALP to perform addition OF TWO 8 bit data 8B H and 6F H                                             

5.       Draw and discuss flag registers of 8085 in brief                                                                                  

6.       List the Rotate instructions of 8085?                                                                                                       

7.       What do you understand by opcode?                                                                                                    

8.       What are Assembler directives?                               

9.       Explain the CMP instruction with the help of an example.                                               

10.   Draw the programming model of  8086 

11.   Explain the physical address formation in 8086                  

12.   Differentiate between Macros and procedures                                                                                  

13.   Difference between Memory Mapped I/O and Peripheral I/O?                                                                    

14.   What do you understand by Program Counter?                                   

15.   Explain the significance of the following:                                                                                                  

i)                    EQU ii) ALIGN     

16.   Explain the operations of Macros                                                                                                                

17.   Determine the physical address resulting from the following instructions:                                               

i)MOV DL,[BP+SI]

Where BP=7000h,SI=0350h,SS=8000h,BX=4FFFh, DS=2000h, DI=6A00h.                                                                 

18.   What is stack and stack pointer?                                                                                                                              

19.   Generate the control word to Set PORT-C7 bits of 8255                                                                 

20.   List the advantages of memory segmentation of 8086                                                                   

21.   Determine the physical address resulting from the following instructions:                                     

i)MOV DL,[BP+SI]

ii) MOV DI,[BX+100h]

iii) SUB BX,AX

iv) MOV[BP+DI+5],AH

v) MOV AL,[5036h]

Where BP=7000h, SI=0350h, SS=8000h, BX=4FFFh, DS=2000h, DI=6A00h.       

22. Write the control word of all the Programmable peripheral Interfacing Chips.