Question Paper: Microprocessor & Interfacing : Question Paper Jun 2015 - Computer Engineering (Semester 5) | Gujarat Technological University (GTU)
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Microprocessor & Interfacing - Jun 2015

Computer Engineering (Semester 5)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.


Answer the following questions

1 (a) 1) What are the advantages of segmentation in 8086?(2 marks) 1 (a) 2) Which 8086 registers are used as memory pointer? Explain the use of memory pointer registers in 8086?(2 marks) 1 (a) 3) If the Code segment register contains 5000H and the instruction pointer register contains 2400H.What is the physical address?(1 marks) 1 (a) 4) What are the controlling flags in 8086? Explain in detail.(2 marks) 1 (b) 1. Briefly explain following directives with example EVEN , DD , SEGMENT
2. Briefly explain following instructions with example AAM , DIV, XLAT and CBW
(7 marks)
2 (a) Write an assembly level programme that averages two values of 16-bit number present in the memory location 3000:0100 and 3000:0102. Store the result in the next memory location.(7 marks) 2 (b) If BX=0158h, DI=10A5h, DS=2100h and DS is used as segment register. Explain and calculate effective address and physical address for following addressing modes. Also identify addressing mode used in the instruction
MOV AL,[BX]
MOV DX,[BX][DI]
MOV DL,[BX]+1B57h
MOV AX,[BX][DI]+1234h
(7 marks)
2 (c) Write an assembly level programme that will find out the number of even and odd numbers from a given series of 16 bit numbers.(7 marks) 3 (a) Explain following
1. Explain the differences between near and far procedure
2. Explain the differences between Macro and Procedure
3. Explain the interrupt response sequence of the 8086 microprocessor
(7 marks)
3 (b) What are the differences between minimum mode and maximum mode operation of 8086? Draw minimum mode system with RAM, ROM and I/O port.(7 marks) 3 (c) Briefly explain respond of 8086 when it receive signal on hardware interrupt pin NMI and INTR.(7 marks) 3 (d) Draw and explain memory read machine cycle of 8086 in minimum mode. Briefly explain ODD and EVEN bank concept in 8086.(7 marks) 4 (a) Briefly explain six functional units of internal architecture of 80386. Explain register structure of 80386.(7 marks) 4 (b) Explain the physical address formation in protected mode of the 80386 with reference to paging and without paging(7 marks) 4 (c) Briefly explain segment descriptor and call gate descriptor in 80386. Briefly explain use of call gate descriptor.(7 marks) 4 (d) Briefly explain task state segment (TSS) and task register (TR) in 80386. Briefly explain different ways of task switching in 80386.(7 marks) 5 (a) Compare real mode, protected mode and virtual 8086 mode in 80386.Briefly explain interrupt handling in Protected mode.(7 marks) 5 (b) 1. Explain the advanced features of 80486 compared to 80386.
2. Explain the advanced features of Pentium processor.
(7 marks)
5 (c) Briefly explain super scalar architecture, Hyper thread technology and core 2 duo technology in Intel P6 family processor.(7 marks) 5 (d) Compare CISC and RISC architecture. Briefly explain Register window in SUNSPARC.(7 marks)

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