*COMDECK NP$DBA 
        BEGIN 
        ITEM DB$TIME    U(0,0,60);      # TIME OF CALL TO NETDBG       #
        ITEM DB$SMF     B(1,0, 1);      # SUPERVISORY MESSAGE FLAG     #
        ITEM DB$DMF     B(1,1, 1);      # DATA MESSAGE FLAG            #
        ITEM DB$CAL     U(1,24,AL);     # CALLING ADDRESS              #
        ITEM DB$OPC     I(1,54,6);      # NETDBG OPCODE (=20)          #
        END 
  
