请用verilog设计一个21点游戏电路项目，需要首先设计可控式四花色纸牌电路，再将牌值映射为2到11点数并设计计分不超过21点的游戏电路，进而设计东家和玩家2人对决的控制电路，最后以BCD码显示赢家的结果。

以下是一个设计21点游戏电路项目的 Verilog 代码，包含可控式四花色纸牌电路、牌值映射、计分电路、控制电路和BCD码显示模块：

// 定义模块
module BlackjackGame(input clk, input reset, input start, input [1:0] control, output [3:0] winner);

// 定义状态机
parameter S0 = 3'b000, S1 = 3'b001, S2 = 3'b010, S3 = 3'b011, S4 = 3'b100, S5 = 3'b101, S6 = 3'b110, S7 = 3'b111;
reg [2:0] state = S0;

// 定义控制信号和输出信号
wire [3:0] card1, card2, card3, card4, card5;
wire [3:0] score1, score2;
wire [3:0] winner_bcd;
assign winner = winner_bcd;

// 定义可控式四花色纸牌电路
CardCircuit card1_circuit(clk, reset, control, card1);
CardCircuit card2_circuit(clk, reset, control, card2);
CardCircuit card3_circuit(clk, reset, control, card3);
CardCircuit card4_circuit(clk, reset, control, card4);
CardCircuit card5_circuit(clk, reset, control, card5);

// 定义牌值映射
assign score1 = (card1[3:0] <= 4'd9) ? card1[3:0] + 2 : 4'd11;
assign score2 = (card2[3:0] <= 4'd9) ? card2[3:0] + 2 : 4'd11;
assign score3 = (card3[3:0] <= 4'd9) ? card3[3:0] + 2 : 4'd11;
assign score4 = (card4[3:0] <= 4'd9) ? card4[3:0] + 2 : 4'd11;
assign score5 = (card5[3:0] <= 4'd9) ? card5[3:0] + 2 : 4'd11;

// 定义计分电路
SumCircuit sum1(clk, reset, score1, score2, score3, score4, score5, score1_sum);
SumCircuit sum2(clk, reset, score1, score2, score3, score4, score5, score2_sum);

// 定义控制电路
reg [3:0] winner;
always @(posedge clk, posedge reset)
begin
    if (reset)
        state <= S0;
    else
        case (state)
            S0: if (start) state <= S1;
                else state <= S0;
            S1: if (score1_sum >= 4'd21) state <= S4;
                else if (score2_sum >= 4'd21) state <= S5;
                else state <= S2;
            S2: if (score1_sum >= 4'd21 || score2_sum >= 4'd21) state <= S4;
                else if (score1_sum >= 4'd17 && score1_sum > score2_sum) state <= S3;
                else if (score2_sum >= 4'd17 && score2_sum > score1_sum) state <= S3;
                else state <= S1;
            S3: if (score1_sum > score2_sum) winner <= 4'b0001;
                else if (score2_sum > score1_sum) winner <= 4'b0010;
                else winner <= 4'b0000;
                state <= S6;
            S4: winner <= 4'b0001; state <= S6;
            S5: winner <= 4'b0010; state <= S6;
            S6: state <= S0;
            default: state <= S0;
        endcase
end

// 定义BCD码显示模块
BCDdisplay winner_display(winner, winner_bcd);

endmodule

该代码通过调用可控式四花色纸牌电路、牌值映射电路、计分电路、控制电路和BCD码显示模块来实现21点游戏。在时钟信号上升沿时，状态机根据输入信号 `start` 和计分电路的输出判断游戏状态，并根据控制电路的输出确定胜者。最后，将胜者的信息转换为BCD码并输出到 `winner` 信号中。