MICROPROCESSOR (MP) MAY 2010 COMPUTER SCIENCE SEMESTER 5

MICROPROCESSOR (MP) MAY 2010 COMPUTER SCIENCE SEMESTER 5 

Con.3426-10                                       (REVISED COURSE)                              AN-4232

                                                                   (3 Hours)                                   [Total Marks: -100]

N.B. (1) Question No.1 is compulsory.
        (2) Solve any four questions from the remaining six questions.

1. Design a 8086 based system consisting of the following:- [20 Marks]
     (a) 8086 microprocessor working at 8 MHz.
     (b) EPROM of 32 KB using 16 KB devices
     (c) SRAM of 64 KB using 32 KB devices
     (d) 1 input, 1 output port (both 16 bits), interrupt devices.
           Explain the design.

2. (a) What are the addressing modes in 8086 microprocessor? Explain with an example of each
          addressing mode. [10 Marks]
    (b) Explain what are Dedicated interrupts in 8086 microprocessor Interrupt in 8086 microprocessor                   Interrupt types. [10 Marks]

3. (a) What is segmented memory? Mention the advantages of segmented memory with reference to
          8086 microprocessor. [10 Marks]
    (b) Draw and explain how the address/data bus is demultiplexed in 8086 microprocessor. Draw
         diagram for all 16 bits. [10 Marks]

4. (a) Explain the necessity of a bus controller in  the 8086 maximum mode system. Explain 8288
         Bus Controller in detail. [10 Marks]
    (b) Explain the need of Bus Arbitration. What are the various Bus Arbitration Schemes in loosely
         coupled systems. [10 Marks]

5. (a) What are the advantages of Direct Memory Access? Show an interfacing diagram of 8086                             microprocessor with 83237 DMA controller. [10 Marks]
    (b) Explain Memory Mapped I/O and I/O mapped I/O.
         Compare between memory mapped I/O and I/O mapped I/O with reference to 8086 and
         8088 microprocessors. [10 Marks]

6. (a) Explain the need of 8259 PIC in 8086 based systems. What are the features of 8259
         PIC? Draw initialization flow chart for 8259. [10 Marks] 
    (b) What are the various modes of operation of 8255 PPI? Explain in details each
          mode. [10 Marks]

7. Write short notes on(any four):- [20 Marks]
     (a) Serial communication using RS-232C
     (b) 8284 clock generator
     (c) Comparison between SRAM and DRAM
     (d) Addressing modes in 8085 microprocessor
     (e) Generation of Reset signals in 8086 based system
     (f) IEEE-488 GPIB standard.