process(rst，pre_state)
begin
if(rst='1')then
next_state <= IDLE;
else --if(rising_edge(clk))then
case pre_state is
when IDLE =>
next_state <= WR1;
when WR1 =>
next_state <= WR2;
when WR2 =>
next_state <= WR3;
when WR3 =>
next_state <= WR4;
when WR4 =>
next_state <= WR5;
when WR5 =>
next_state <= WR1;
when others=>
next_state <= IDLE;
end case;
end if;
end process;
以上为专业做法，你如果不理解，就需要花点时间。 |
