*COMDECK BUFASYNC 
_ 
            ----  A S Y N C  BLOCK MODE BUFFER OVERLAY  ----
? 
        3: (BFAFL1   : INTEGER; 
            BFAFL2   : B09BITS; 
            BFADELAY : BOOLEAN;             _DELAY AFTER TRANSMISSION  ?
            BFAINTYP : B02BITS;             _INPUT TYPE (IVT: 1=CNT   )?
                                            _(XPT: 0=EOX, 1=CNT, 2=DEL)?
            BFAFL3   : B02BITS;             _(BFXPT/BFPARITY BITS)     ?
            BFAIVT   : BOOLEAN;             _POSSIBLE IVT COMMAND      ?
            BFATRUST : BOOLEAN);            _TRUSTED PATH DETECTED     ?
  
