Also known as: AF-, af.
AF has various meanings in the Electronic Engineering category. Discover the full forms, definitions, and usage contexts of AF in Electronic Engineering.
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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