Answer Posted / faisal imam saifi

there are five flip-flop in 8085 which individually denote the characteristic if the ALU result.
1.Sign flag(S): S=1, if D7=1; otherwise S=0;
2.Zero flag(Z): Z=1,if A=00H; otherwise Z=0;
3.Auxiliary flag(AC): AC=1, if a carry is generated from the addition of fourth bit from right of a 8-bit binary no. otherwise AC=0;
4.Parity flag(P): P=1, if A has even parity;
P=0, if A has odd parity;
5.Carry flag(CY): CY=1,Carry is generated;
CY=0,Carry is not generated;

What is instruction cycle?

1189

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Can you name the different types of processor?

1165

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What is the the total addressable memory size in a 8085 microprocessor?

1036

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In what way interrupts are classified in 8085?

1176

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Define the 8085 instruction format and their classification according to word size?

1064

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explain the trap input for the 8085.

1019

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What is the purpose of a buffer register in reference to 8085?

985

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In 8085, power and frequency can be checked by connecting the wire with which pins?

1193

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What are the different flags included in the alu?

1108

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What is processor cycle (machine cycle)?

1072

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What the sp register does in a program?

1039

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Can port 0 be used as input output port?

1157

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What are the different types of arithmetic operations that can be performed by the 8085 microprocessor? Explain with an example?

1131

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How to detect a sequence of "1101" arriving serially from a signal line?

1065

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What jobs alu of 8085 can perform?

1281

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