"When is PowerPC not PowerPC?" may seem like a silly question, but it's not. In 1995, a new 64-bit RISC processor was introduced in the AS/400. At that time, the architecture of that processor was said to be PowerPC. Actually, we said it was PowerPC-AS, but there was little or no explanation of why the "AS" was attached to the PowerPC name. Soon most people, including this author, were simply calling the architecture PowerPC. Discussions of the iSeries in the press often state that this ...

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