永恆的等待
最簡單的 wait
語句形式很簡單:
wait;
每當程序執行此操作時,它將永久掛起。模擬排程程式永遠不會再次恢復它。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;