Formerly About Advanced Micro Devices Message Board

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Politics : Formerly About Advanced Micro Devices

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To: Ali Chen who wrote (51757)	3/6/1999 7:13:00 AM
From: Elmer	Read Replies (1) of 1572673

Re: "Nice introduction, but everything is backwards. Alpha has a long pipeline because they WANT every stage to be "short tick". To make the tick "short", they had to reduce amount of sequential gates in stage logic, and therefore they can't do "a whole lot" in a cycle, as you correctly noticed. As a result, the pipeline must have more stages to execute same instructions. But because the number of sequential gates in stages is strictly limited by design, the stage propagation time is short, and that is why the frequency is high." Sorry Ali but you got things backwards. 'Sequential gates'? You mean combinational gates between sequential elements. EP

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