dispmux.v

交通灯控制系统的FPGA设计与实现

module dispmux(SEL,D_IN1,D_IN0,D_OUT);

output [3:0] D_OUT;

input [3:0] D_IN1;
input [3:0] D_IN0;
input [1:0] SEL;

reg [3:0] D_OUT;

always
begin
	case(SEL)
		2'b01 : D_OUT <= D_IN0;
		2'b10 : D_OUT <= D_IN1;
		default : D_OUT <= 4'b0000;
	endcase	
end
endmodule