DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   P6
      <processor> ("P" from Pentium, 6 from 686, the successor to
      586 which is what the Pentium would have been had it followed
      the naming scheme its predecessors) The name for the Pentium
    Pro during development.
      (1995-11-15)