counter.v

FPGA开发板上写的Verilog代码 功能是从电脑端发送一个字节

//-----------------------------------------------------------------
// This is the top level module that ties all sub-modules together
// Filename : counter.v
//-----------------------------------------------------------------

module counter(clk,reset,one_out,ten_out);
    input clk;
    input reset;
    output [3:0] one_out;
    output [3:0] ten_out;

    wire nreset;
    wire ones_en;        //Chip enable in digital one
    wire tens_en;        //Chip enable in digital ten
    wire tc_ones;        //Carry out in digital one
    wire [3:0] one_out;	//BCD output in digital one
    wire [3:0] ten_out;	//DCD output in digital ten

	              
cnt_10 ONES(
            .ce(ones_en),
            .clk(clk),
            .clr(nreset),
            .tc(tc_ones),
            .qout(one_out)
           );
		   
cnt_10 TENS(
            .ce(tens_en),
            .clk(clk),
            .clr(nreset),
            .tc(),
            .qout(ten_out)
           );
		   
assign tens_en = tc_ones;
assign ones_en = 1'b1;

assign nreset  = ~reset;

endmodule