Other Bachelor Degree- MICROPROCESSORS AND INTERFACING (Karunya University, Coimbatore-2012)

Reg. No. ________                                                                                                                                                      

Karunya University

(Karunya Institute of Technology and Sciences)

(Declared as Deemed to be University under Sec.3 of the UGC Act, 1956)

 

Supplementary Examination – June 2012

 

Subject Title: MICROPROCESSORS AND INTERFACING                                  Time: 3 hours

Subject Code:            09IT206                                                                                                                             Maximum Marks: 100           

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer ALL questions

PART – A (10 x 1 = 10 MARKS)

 

1.         How large is the 8088’s memory address space?

2.         What kind of information is stored in the index registers?

3.         Define – Instruction Set.

4.    Identify the addressing modes used for the source and the destination operands in the instructions that follow:

       a.  MOV AX, BX                        b.         MOV AL, 15H

5.    What is an idle state?

6.    In which bank of memory in an 8086 based microcomputer are odd-addressed bytes of data stored?

7.    Which sizes of down counters are used in Programmable Interval Timer?

8.    What are functions of base and current address registers in 8237 (DMA)?

9.    List out the different types of interrupts in the 8086/8088 microprocessors.

10.  What happens when the instruction HTL is executed?

 

PART – B (5 x 3 = 15 MARKS)

 

11.       List and explain the different types of Status Registers.

12.  Assume that the AX and BX registers contain 1100₁₆ and 0ABC₁₆, respectively. What are the results of executing the instruction ADD AX, BX?

13.  Write short note on Input/output Instructions of 8086 microprocessor.

14.  What is meant by memory mapped I/O?

15.  Discuss in detail about the Interrupt Instructions.

 

PART – C (5 x 15 = 75 MARKS)

 

16.       Explain in detail about the internal architecture of the 8086 Microprocessor.

(OR)

17.       Discuss in detail about the software model of 8088/8086 Microprocessor.

 

18.       Briefly explain about the Instruction set of the 8086.

(OR)

19.       Explain in detail about the Addressing Modes of the 8086.

 

20.       Explain in detail about the Minimum-mode and Maximum-mode systems of 8086.

(OR)

21.       Discuss in detail about the isolated input/output interface of the 8088/8086 Microprocessor.

 

22.       Explain about the 8255A Programmable Peripheral Interface with functional block diagram.

(OR)

23.  Explain in detail about the internal Architecture of the 8237A Programmable Direct Memory Access controller.

[P.T.O]

 

24.  Draw the block diagram of 8259A programmable interrupt controller and describe its operation.

(OR)

25.  Discuss in detail about the following:

       a.  S/W Interrupts                        b.         Internal Interrupt functions

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