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KANDNB

Performs a bitwise AND operation between a quadword source and a quadword destination, and stores the result in the destination. The operation is performed on the operands as unsigned integers.

The table after the description covers what the source and destinations can be.

DO NOT support LOCK

This instruction SHALL only be executed in 64-bit mode. It is NOT available in compatibility mode or 32-bit protected mode.

The destination register MUST be a 64-bit register (r64). Using a 32-bit register as a destination will result in an invalid opcode exception.