Answer Posted / sampat pawar

8085 has five flags as follows:
1)Zero Flag[Z]- If result in accumulator is one then this flag is set to one else it is set to zero.
2)Parity[P]-If no. of ones in result are even then this flag is set to one else set to zero.
3)Sign flag[S]- This flag shows the result is positive or negative. If MSB in result is 1 then this flag is set else reset.
4)Carry Flag[CY]-If carry is generated after operation then this flag is set to one else set to reset.
5)Auxiliary Carry[AY]-If carry is generated from third bit to fourth bit then this flag is set to one else it is set to reset.

write the assembly language programming to find the 2's complement for a string of 100 bytes

1075

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What is clock frequency for 8085?

1005

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What is an interrupt service routine?

989

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List some analog modulation techniques.

1029

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Mention the addressing modes of 8085?

1011

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How can you increase ports of a microprocessor?

1252

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Design a divide-by-3 sequential circuit with 50% duty circle now?

1000

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What is 8255?

999

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What are the data pins of microprocessors?

1120

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What type of memory is the stack?

1020

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Explain the pointers and index group of registers

1050

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Other than setb, clr are there any single bit instructions?

969

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What are the different flags included in the alu?

1061

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What are the major differences in short label and near label jump instructions?

938

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Explain the 8051 microcontroller architecture?

1033

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