This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b

KANDND

Performs a bitwise AND of the source and destination operands, and then performs a bitwise NOT on the result, storing the final value in the destination.

The following table covers what the source and destinations can be:

DO NOT support LOCK

This instruction is only available in 64-bit mode. It is NOT supported in compatibility mode or 32-bit mode.

The instruction does NOT affect any EFLAGS bits. Ensure that the memory operand size matches the register size to avoid truncated results.