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ALU
From SnesLab
The Arithmetic and Logic Unit (ALU) is an essential part of many CPUs, including the 65c816. The ALU is a full 16 bits wide on the '816 - it calculates the results of data operations (such as ADC and SBC) and effective addresses for relative and indexed addressing modes.
The following flags may be updated after an ALU operation:
Reference
- section 2.3 of 65c816 datasheet