Source : Free On-Line Dictionary of Computing

Branch and Hang
     
         (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 Immediate Extended (stores the
        value into the extension word of the instruction) and Branch
        and Link Immediate (makes a subroutine call to the same
        instruction -- Branch and Hang).
     
        Compare {HCF}.
     
        (1997-02-12)