VHDL 的testbech 用warit for 的话,想结束后面加wait,不然会一直循环下去
Initial1: process
begin
areset <= '0';
wait for 0.8 ms;
areset <= '1';
wait for 0.5 ms;
areset <= '0';
wait for 0.5 ms;
areset <= '1';
wait for 0.5 ms;
areset <= '1';
wait;
end process;