group identifier : group_ template _name ( group_constituent_list ) ;
group_constituent { , group_constituent }
Groups of type pin2pin are declared.
GROUP pinpair1 : pin2pin (clk, q1) ;
GROUP pinpair2 : pin2pin (clk, q2) ;
A group of the former declared groups.
GROUP clocked : gog (pinpair1, pinpair2);
GROUP path IS ( SIGNAL , SIGNAL ) ; GROUP a_to_s : path (a,s) ; ATTRIBUTE propagation_delay : time ; ATTRIBUTE propagation_delay OF a_to_s : GROUP IS 250 ns ;
GROUP pin_set IS ( SIGNAL <>) ; GROUP paths IS ( GROUPS <>) ; GROUP sources : pin_set (inp1, inp2) ; GROUP targets : pin_set (outp1, outp2) ; GROUP ins_to_outs : paths (sources, targets) ; ATTRIBUTE propagation_delay : time ; ATTRIBUTE propagation_delay OF ins_to_outs : GROUP IS delay ;