State the use of OF and DF flags of 8086 microprocessor.

State the use of OF and DF flags of 8086 microprocessor.
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1 Answer

Answer :

Overflow Flag: This flag is set if an overflow occurs, i.e. if the result of a signed operation is large enough to be accommodated in destination register.

Direction Flag: It selects either increment or decrement mode for DI &/or SI register during string instructions.
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Related questions

Write an algorithm to subtract two 16 bit numbers (With borrow) in 8086 microprocessor.

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State the functions of temporary registers of 8085 microprocessor.

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Enlist the features of 8085 microprocessor.

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Describe the functions of stack pointer and program counter of 8085.

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In 8086 the overflow flag is set when a) The sum is more than 16 bits b) Signed numbers go out of their range after an arithmetic operation c) Carry and sign flags are set

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In 8086 microprocessor one of the following statements is not true.a)Coprocessor is interfaced in MAX mode b)Coprocessor is interfaced in MIN mode c)I/O can be interfaced in MAX / MIN moded)Supports pipelining

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Last Answer : d) 220

In 8086 microprocessor one of the following instructions is executed before an arithmetic operation a) AAM b) AAD c) DAS d) DAA

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Which are the flags of status register: a. Over flow flag b. Carry flag c. Half carry flag d. Zero flag e. Interrupt flag f. Negative flag g. All of these

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