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by LegionMammal978
743 days ago
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> Any useful implementation of a CPU has an enormous number of internal details that aren't implied by the ISA. If anything, I'd say that it's precisely because of this independence that an ISA can be seen as a separate work from any of its existing implementations. So what I'm trying to get at, is that if an ISA is copyrightable at all, in whole or in part, then any complete re-implementation will be copying most of the ISA's own substance, regardless of differing internal details. (Where by 'ISA' I specifically mean the external interface that software can access.) |
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