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    Information Research Services Updated: 19 August 1997
         
     
           
        The Rigel chip, DIGITAL's third 32-bit microprocessor design, was manufactured in 1.5-micrometer CMOS technology. The chip shipped in the VAX 6400 system and, somewhat later, in the VAX 4000 system. Rigel was the first implementation of the vector extensions of the VAX architecture.