永恒的等待
最简单的 wait
语句形式很简单:
wait;
每当进程执行此操作时,它将永久挂起。模拟调度程序永远不会再次恢复它。例:
signal end_of_simulation: boolean := false;
...
process
begin
clock <= '0';
wait for 500 ps;
clock <= '1';
wait for 500 ps;
if end_of_simulation then
wait;
end if;
end process;