Jfcl

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  JFCL
       
          /jif'kl/, /jaf'kl/, /j*-fi'kl/ (obsolete) To cancel or annul
          something.  "Why don't you jfcl that out?"  The fastest
          do-nothing instruction on older models of the {PDP-10}
          happened to be JFCL, which stands for "Jump if Flag set and


          then CLear the flag"; this does something useful, but is a
          very fast no-operation if no flag is specified.  Geoff
          Goodfellow, one of the jargon-1 co-authors, had JFCL on the
          licence plate of his BMW for years.  Usage: rare except among
          old-time PDP-10 hackers.
       
          [{Jargon File}]
       
          (1994-11-22)