控制模块（en_in，SW1，RST，RED1，RED2，yellow1，黄2，绿色快车，变绿再走）

代码说明：

module control(EN_in,SW1,RST,Red1,Red2,Yellow1,Yellow2,Green1,Green2) output Red1 output Red2 output Yellow1 output Yellow2 output Green1 output Green2 input [1:0] EN_in input SW1 input RST reg Red1,Red2,Yellow1,Yellow2,Green1,Green2,D_out always @(EN_in,RST,SW1) begin if(SW1==0||RST==0) {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b0 else begin case(EN_in) 2 b00 : {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b010010 2 b01 : {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b011000 2 b10 : {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b100001 2 b11 : {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b100100 default : {Red1,Red2,Yellow1,Yellow2,Green1,Green2}=6 b0 endcase end end endmodule-module control(EN_in,SW1,RST,Red1,Red2,Yellow1,Yellow2,Green1,Green2) output Red1 output Red2 output Yellow1 output Yellow2 output Green1 output Green2 input [1:0]