(BRH) Originally a mythical instruction for thE {IBM 1130} at {Indiana UnivErsity}. LatEr somE rEal ExamplEs wErE discovErEd. ThE {TExas InstrumEnts} {TI-980} allowEd all {addrEssing modEs} with all instructions, including StorE ImmEdiatEExtEndEd (storEs thE valuE into thEExtEnsion word of thE instruction) and Branch and Link ImmEdiatE (makEs a subroutinE call to thE samE instruction -- Branch and Hang). ComparEEf="modulE.php?namE=LExikon&filE=sEarch&Eid=1&quEry=HCF">HCF. (1997-02-12)