use work.qsim_types.all, work.random.all; entity source is generic ( name : string; distribution : distribution_type; mean_inter_arrival_time : delay_length; seed : seed_type; time_unit : delay_length := ns; info_file_name : string := "info_file.dat" ); port ( out_arc : out arc_type; info_detail : in info_detail_type ); end entity source;