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To: Tenchusatsu who wrote (158795)	2/14/2002 6:57:11 PM
From: Paul Engel	Respond to of 186894

Ten - Re: "Itanium is not a completely static architecture, unlike most versions of VLIW. This is a common misconception. In this case, assembly instructions will still be arranged into bundles of three. The fetch unit takes each bundle, and the decode unit (or whatever) unpacks the instructions in each bundle. Then all of the unpacked instructions get sent to the various execution units. The bundling of instructions helps to resolve some of the dependencies between instructions in a block of code. That simplifies the job of the front-end part of the Itanium pipeline. The back-end part (the execution units) resolves the rest of the dependencies and is actually able to execute instructions out-of-order, to an extent. That's how additional execution units in McKinley can help." Thanks for the additional "enlightenment" on the ITanium architecture. Paul