sixth semester b.tech. (engineering) … 6127 name . reg. no . sixth semester b.tech. (engineering)...

C 6127 Name . Re g. No . SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREE EXAMINATION, JUNE 2010 EE 04 602--MICROPROCESSORS AND MICRO-CONTROLLERS (2004 admissions) Time : Three Hours Maximum : 100 Marks ,F Answer-all questions. I. (a) What is me ant by.segmented memory? State the advantages ofsegmented memory operation. (b) Distinguish between Loosely and Tightly coupled systems. (c) Which port lines of 8255 can be configured to operate as bi-directional port? Also name the handshake signals used in this mode ofoperation. (d) Explain the operation of the scan section of 8279 keyboard display controller Ie . (e) What are selectors and desc riptors? Explain about each one . (f) Discuss about the memory system of Pentium. (g) Name the flag bi ts used in 8051 micro-controller and explain the use of each one. (h) List the alte rnate use ofport-3 pins of 8051 micro-controller. (8 x 5 = 40 mark s) II. (a) What is an interrupt vector table with reference to 8086 ? Draw the memory map of the interrupt vec tor table of 8086 based system and explain. Also explain the use of INT 'n' instruction in borrowing the BIOS routines. Or (b) With the help of diagr am, explain how 8089 110 processor can be interfaced to 8086 to control data transfer to various I/O devices. III. (a) Draw the block schematic oft he internal architecture of 8 L57 DMA controller and explain. Or (b) Discuss about different modes ofoperation of8253 Timer with the of re l evant waveforms. IV. (a) Discuss about pipelines and caches of 80386 system. Or (b) Explain the paging mechanism (function of paging unit) of a microprocessor. V. (a) List and explain the arithmetic and logical instructions of 8051 micro-controller. Or (b) With the help of diagram, explain how a 1 KB RAM chip can be interfaced to 8051 micro - controller. (4 x 15 =60 marks) "Vidya Digital Library" "Vidya Digital Library"

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C 6127 Name .

Reg. No .

SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREEEXAMINATION, JUNE 2010

EE 04 602--MICROPROCESSORS AND MICRO-CONTROLLERS

(2004 admissions)

Time : Three Hours Maximum : 100 Marks

Answer-all questions.

I. (a) What is meant by.segmented memory? State the advantages of segmented memory operation.

(b) Distinguish between Loosely l.uup~cJ and Tightly coupled systems.

(c) Which port lines of 8255 can be configured to operate as bi-directional port? Also name thehandshake signals used in this mode of operation.

(d) Explain the operat ion of th e scan section of 8279 keyboard display controller Ie.

(e) What are selectors and desc riptors? Explain about each one .

(f) Discuss about the memory system of Pentium.

(g) Name the flag bits used in 8051 micro-controller and explain the use of each one.

(h) List the alternate use ofport-3 pins of 8051 micro-controller.

(8 x 5 =40 marks)

II . (a) What is an interrupt vector table with reference to 8086 ? Draw the memory map of theinterrupt vector table of 8086 based system and explain. Also explain the use of INT 'n'instruction in borrowing the BIOS routines.

(b) With the help of diagram, explain how 8089 110 processor can be interfaced to 8086 to cont roldata transfer to various I/O devices.

III. (a) Draw the block schematic ofthe internal architecture of 8 L57 DMA controller and explain.

(b) Discuss about different modes of operation of 8253 Timer with the h~p of re levant waveforms.

IV. (a) Discuss about pipelines and caches of 80386 system.

(b) Explain the paging mechanism (function of paging unit) of a microprocessor.

V. (a) List and explain the arithmetic and logical instructions of 8051 micro-controller.

(b) With the help of diagram, explain how a 1 KB RAM chip can be interfaced to 8051 microcontroller.

(4 x 15 =60 marks)

"Vidya Digital Library"