Also known as: AF-, af.
AF stands for various terms. Discover the full forms, meanings, and possible interpretations of AF across different fields and industries.
The Adjust flag (also known as the auxiliary carry flag) is a CPU flag in the FLAGS register of all x86-compatible CPUs. It is located at bit position 4. It indicates when an arithmetic carry or borrow has been generated out of the four least significant bits, or lower nibble. It is primarily used to support binary-coded decimal (BCD) arithmetic.
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