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is a single bit in a system status (flag) register used to indicate whether the result of the last mathematical operation produced a value in which the most significant bit (the left most bit) was set. In a
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For example, in an 8-bit signed number system, -37 will be represented as 1101 1011 in binary (the most significant bit, or
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compare instructions (equivalent to subtract instructions without storing the result);
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interpretation of the result, the negative flag is set if the result was negative.
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instructions (equivalent to AND instructions without storing the result).
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series processors by the following instructions (referring to the
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All arithmetic operations except multiplication and division;
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The negative flag is set according to the result in the
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201:INTEL 80386. Programmer's Reference Manual 1986
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177:Logical instructions – XOR, AND, OR;
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