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Laboratory 3.2: Some Ambiguities
“Is the result negative?”
- What do we mean by result?
- . . . the result of the unsigned arithmetic?
- . . . or the result of the signed arithmetic using 2's complement notation?
- What is the operation whose result we are considering?
- . . . the addition, subtraction, or comparison specified by the instruction?
- . . . or the action taken by the processor in response to this instruction?