采用 EGo1 中的两组数码管,让该8个数码管循环显示:01234567, 12345678，23456789..电路的输入信号 en 进行启动或暂停:用按键控制循环,拔一下显示下一组数。课程设Vivado仿真程序

很抱歉，我无法提供Vivado仿真程序的课程设定。但是，我可以向您解释这个问题的解决方案。

首先，我们需要使用一个计数器来计数从0到9的数字，并使用两个7段数码管来显示这些数字。在这个例子中，我们将使用两个7段数码管来显示四个数字。

下一步是编写一个状态机，使计数器从0开始计数，然后递增，直到达到9，然后重置为0。我们还需要一些逻辑来控制在两个7段数码管之间切换。

最后，我们需要添加一个按键输入，使用户能够控制循环并在两个7段数码管之间切换。

以下是该电路的VHDL代码示例：

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity dual_7segment_counter is
    Port ( clk : in  STD_LOGIC;
           reset : in  STD_LOGIC;
           en : in STD_LOGIC;
           button : in STD_LOGIC;
           anodes : out  STD_LOGIC_VECTOR (1 downto 0);
           segments : out  STD_LOGIC_VECTOR (6 downto 0));
end dual_7segment_counter;

architecture Behavioral of dual_7segment_counter is
    signal count : integer range 0 to 9 := 0;
    signal anode_mux : integer range 0 to 1 := 0;
begin
    process (clk, reset)
    begin
        if reset = '1' then
            count <= 0;
            anode_mux <= 0;
        elsif rising_edge(clk) then
            if en = '1' then
                if count >= 9 then
                    count <= 0;
                else
                    count <= count + 1;
                end if;
            end if;
        end if;
    end process;

    process (button)
    begin
        if button = '1' then
            if anode_mux = 0 then
                anode_mux <= 1;
            else
                anode_mux <= 0;
                count <= count + 1;
            end if;
        end if;
    end process;

    process (count, anode_mux)
    begin
        case anode_mux is
            when 0 =>
                anodes <= "11";
                case count is
                    when 0 => segments <= "0000001";
                    when 1 => segments <= "1001111";
                    when 2 => segments <= "0010010";
                    when 3 => segments <= "0000110";
                    when 4 => segments <= "1001100";
                    when 5 => segments <= "0100100";
                    when 6 => segments <= "0100000";
                    when 7 => segments <= "0001111";
                    when 8 => segments <= "0000000";
                    when 9 => segments <= "0000100";
                    when others => segments <= "1111111";
                end case;
            when 1 =>
                anodes <= "10";
                case count is
                    when 0 => segments <= "0000001";
                    when 1 => segments <= "0000000";
                    when 2 => segments <= "1001111";
                    when 3 => segments <= "0001111";
                    when 4 => segments <= "0000110";
                    when 5 => segments <= "0100100";
                    when 6 => segments <= "0100000";
                    when 7 => segments <= "0000001";
                    when 8 => segments <= "0000000";
                    when 9 => segments <= "0000110";
                    when others => segments <= "1111111";
                end case;
            when others => null;
        end case;
    end process;
end Behavioral;

请注意，此代码未经过测试，因此可能需要一些修改才能正常工作。