Q. In a 3 byte instruction of 8085, the first, second and third byte respectively indicate

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Q. In 8085 microprocessor, which of the following is not vectored interrupt?

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Q. How many input-output ports can be accessed by direct method of 8085 microprocessor?

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Q. When was the first 8-bit microprocessor introduced?

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Q. Which of the following buses does not exist in 8085?

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Q. In 8085 microprocessor, what is the length of SP (stack) pointer?

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Q. Which of the following instructions in 8085 does not belong to data transfer group?

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Q. Consider the following statements about 8085

The instruction LDA uses direct addressing mode.
The instruction MVI uses direct addressing mode.
The instruction MVI uses immediate addressing mode.
The instruction LDA uses immediate addressing mode.
Which of the above are correct?

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Q. The 8085A is a(n):

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Q. In 8085 microprocessor the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in

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Q. The flag register content after execution of following program by 8085
microprocessor shall be
Program
SUB A
MVI B, (01)H
DCR B
HLT

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Q. Which flag of the 8085's flag register is not accessible to programmer directly?

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Q. Which of the following interrupt is maskable?

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Q. Word 20 contains 40
Word 30 contains 50
Word 40 contains 60
Word 50 contains 70
Which of the following instructions does not, load 60 into the Accumulator ?

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Q. An interrupt for which hardware automatically transfers the program to a specific memory location is known as

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Q. 8085 microprocessor carryout the subtraction by

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Q. If the stack pointer is initialised with (4FEB)H, then after execution of Push operation in 8085 microprocessor, the Stack Pointer shall be

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