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MICROPROCESSOR 8085 MP 4TH SEMESTER
Microprocessor 8085 PSBTE May 2015 Paper SECTION-A
Q1. Do as directed. 15×1=15
EPROM Stands Erasable Program Read Only Memory.
8085 has 74 Basic instructions.
Instruction is used to load 16 bit is LHLD
TRAP is the highest priority Interrupt.
RST stands for Restart Instructions .
(ii) Do as directed
A programmable device similar to CPU of computer is known as (a) Central processing unit (b) microprocessor (d) Microcomputer (e) PLA ANS (d) Microcomputer
The address bus of 8085 is 16 bit and hence the memory which can be accessed by this address bus is
(a) 112k (b) 4k
(c) 16 k (d) 64 k
ANS (d) 64KB
3.A state during which nothing happens is known as
(a) STA (b) NOP
(c) STC (d) opcode
4. Mov A, B has
(a) 1 machine cycle (b) 2 machine cycle
(c) 3 machine cycle (d) 4 machine cycle
ANS(a) 1 Machine Cycle
5. Which of the following is not present in 8085
(a) PORT A (b) PORT C
(c) PORT B (d) ALU
ANS (d) ALU
Q2. Attempt any five questions. 5×6=30
Explain the various steps involved in execution of program?
How interrupt are handled in 8085 ?
Differentiate between programmed I/O & Interrupt driven I/O ?
Discuss various addressing mode of 8085 ?
Explain various function blocks of microprocessor ?
Explain the timing diagram ofMVI A data ?
Write a assembly language program to two`s compliment the 8 bit number?
Q3. Attempt any three questions. 3×10=30
Q3 Explain the pin out Diagram of 8085 and explain functions of each pin?
Q4 Compare the important feature of z80, 6800, 8085 processor?
Q5 Write a short note on ? (a) 8253 (b) 8251
Q6 Explain stack and its function?
Q7 Explain the following?
(a) Instruction cycle (b) machine cycle (c) t state
(d) Fetch cycle (e) execute cycle
microprocessor 8085 mp
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may 2015 DIPLOMA PAPER SOLUTION
Section a:- microprocessor 8085 mp may 2015 diploma paper solutionThe Data bus in 8085 is ______ bit
8 BitA Maximum memory that can be connected to 8085 microprocessor is ____
64KBProgram Counter (PC) in 8085 is used to point to the address of instruction to be _____
FetchedEPROM Stands for ____________
Erasable Program Read Only Memory.A 8085 has ___________ addressing mode
FourDAA stands for _________________
Decimal Adjust Accumulator____________ is the highest priority Interrupt.
TRAPDMA means ______________
Direct Memory Access.________ instruction is used to output data from SOD Line.
SIM instructionBSR stands for ____________
Bit Set Reset Mode.
Section B : Microprocessor PAPER MAY 2015 solution hereShort Note on the special purpose registers of 8085 ?
Special purpose registers of 8085 Click Here.Explain the function of assembler, compiler and Interpreter. Describe instruction cycle, machine cycle and fetch Cycle What is the basic difference between programmed data transfer and DMA scheme ? Describe the flags of 8085 ?
Solution Click HereExplain how address and data lines are de-multiplexed in 8085 ?
Solution Click HereDifferentiate between memory mapped I/O and I/O mapped I/O ?
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