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semiconductor process development scheclule,requiring breakthroughs in concurrent developmentof product and process. And tliird, the timeallottccl from chip design conlpletion to systemshipment was tlie shortest in Digital's history,requiring unprecedented accuracy in chip andsystem design and verification.As in past projects, work in various disciplinesseniiconcluctorprocess developnient, chip microarchitectureand circuit design, ~nicroprocessordesign tools, chip anel system verification tools,and system design-cascaded from processthrough systems. First to start was a team fromAdvancecl Semiconcluctor Development (ASD),which designed, simulated, and introduced intomanufacturing CMOS-4, Digital's fourth generationof ClLlOS technology (see the Digit611 R~chnicnlJourfzal, Spring 1992). Builcling on prior technologygenerations,