Manipal University 2007 B.E Biomedical Engineering FIFTH SEMESTER MAKE UP S – - Question Paper
FIFTH SEMESTER B.E. DEGREE MAKE UP exams – JANUARY 2007
SUBJECT: MICROPROCESSORS (BME 307)
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CT$TT5T 91 gi
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INSPIRED BY LIFE
MANIPAL INSTITUTE OF TECHNOLOGY
(A Constituent Institute of MAHE - Deemed University) Manipal - 576 104
FIFTH SEMESTER B.E. DEGREE MAKE UP EXAMINATIONS - JANUARY 2007
SUBJECT: MICROPROCESSORS (BME 307 )
(REVISED CREDIT SYSTEM)
Wednesday January10, 20072p.m. to 5p.m.
TIME: 3 HOURS
MAX. MARKS: 100
Instructions to Candidates
1. Answer any FIVE full questions.
2. Draw labeled diagram wherever necessary
With the help of necessary diagram explain the programming model of Intel 8085 microprocessor. Give significance of each resource.
Distinguish between Instruction cycle, Machine cycle and T- states.
With an example each explain the following addressing modes used in the 8085 microprocessor.
i. Direct addressing mode
ii. Immediate addressing mode
iii. Register indirect addressing mode
Draw and explain clearly the various waveforms and states involved in the Opcode fetch machine cycle of the 8085 microprocessor.
Draw the timing diagram for the following instruction
i. LDA 22FFH
ii. MVI, 00H
Write single 8085 instructions equivalent to the following 8085 instruction sequences.
(a)
(b) (c)
10
04
06
(a)
(b)
(a)
2
06
07+07
3
(i) PUSH D XTHL POP D
(ii) PUSH B MOV B,H MOV C,L LDAX B POP B
(iii) PUSH PSW XRA A ADC C MOV C,A POP PSW
(iii) LXI H,0000 DAD SP MOV E,M INX H MOV D,M INX H SPHL
2X4=8
With relevant illustrations explain the following instructions (i) CALL 16 bit address (ii) RET
(b)
06+06
(a) Hundred 8-bit numbers are available in a memory array starting at 8C00H.
Separate them into even and odd elements. Store the odd elements from 8D00H
and even elements from 8E00H. Give the algorithm 10
(b) Interface one 8 K bytes EPROM and two 8 K bytes static RAM to the 8085.
Give memory map and the logic diagram. 10
(a) What are the pins associated with the interrupt operation in the 8085 microprocessor? Describe the way in which each pin operates. What is the order
5
of priority assigned to the different interrupts of 8085? 08
(b) Distinguish between memory mapped I/O and I/O mapped I/O. 04
(c) Describe briefly the programmable peripheral interfacing device. 08
(a) Describe DMA controller device 08
(b) Explain the following interfacing devices
(i) Intel 74LS245
(ii) Intel 74LS148 04+04
(c) Draw a labeled programming model of INTEL 8051 microcontroller. 04
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