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AND A AND B
The AND operation performs a bit-by-bit AND of the values stored in the "A" and "B" registers, and stores the result in a destination register, address pointer, or location in memory. For the latter, the address pointer must be setup before the ALU writes to memory.
4B8A - Store the result to the "A" register.
4B8B - Store the result to the "B" register.
4B8C - Store the result to the "C" general purpose register.
4B8F - Store the result to the "F" output high register.
4B80 - Store the result to memory, at the current active address.
4B81 - Store the result to address pointer 1.
4B82 - Store the result to address pointer 2.