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By 'internal data bus', do you mean the number of bits which can be manipulated internally in a single operation, such as copying from one register to another? If so, that's what I meant by 'native word size', though I tend to think of it as the width of the 'general registers' of the CPU in question, particularly in regards to addressing, logical, and integer arithmetic operations, and usually excluding floating-point operations.
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And once again, Probability proves itself willing to sneak into a back alley and service Drama as would a copper-piece harlot.
- Vaarsuvius, Order of the Stick
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