09/05/2023 8:32 pm
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What Are the Flags In 8086?
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11/05/2023 5:15 am
Here are the flags in the 8086 processor:
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Carry Flag (CF): This flag is set if an arithmetic operation generates a carry or borrow. For example, if an addition operation results in a carry out of the most significant bit, or if a subtraction operation requires a borrow, the carry flag is set.
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Parity Flag (PF): This flag is set if the result of an operation contains an even number of set (1) bits. It is used for checking the parity (evenness or oddness) of the result.
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Auxiliary Carry Flag (AF): This flag is used for binary-coded decimal (BCD) arithmetic operations. It is set if a carry or borrow occurs between the low nibble (bits 0-3) and the high nibble (bits 4-7) of a byte during an arithmetic operation.
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Zero Flag (ZF): This flag is set if the result of an operation is zero. It is used to test whether two values are equal or to check if a register or memory location contains zero.
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Sign Flag (SF): This flag is set if the result of an operation is negative. The sign is determined by the most significant bit (bit 7) of the result.
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Overflow Flag (OF): This flag is set if the result of a signed arithmetic operation overflows the range of representable values. It indicates that the result is too large or too small to be correctly represented with the available number of bits.
