anchor.diff:  
   %%% create op_connect binary
   op_connect(Host, Username, _Password, Database) ->
  +    ?debugFmt("op_connect~n", []),
       %% PROTOCOL_VERSION,ArchType(Generic),MinAcceptType,MaxAcceptType,Weight
       Protocols = lists:flatten(
           [efirebirdsql_conv:byte4(10),
  
positive.code: 
  %%% free statement
  op_free_statement(StmtHandle) ->
      %% DSQL_close = 1
      %% DSQL_drop = 2
      list_to_binary([
  
negative.code: 
  %%% create op_attach binary
  op_attach(Username, Password, Database) ->
      ?debugFmt("op_attach~n", []),
      Dpb = lists:flatten([
          1,
          48, length(?CHARSET), ?CHARSET,    %% isc_dpb_lc_ctype = 48
  