14 Building Larger Circuits

Exams/review2015 count1k

计数到999再清零即可。

module top_module (
    input clk,
    input reset,
    output reg[9:0] q);
    
    always@(posedge clk)
    begin
        if(reset)
            q <= "d0;
        else
            q <= (q<10"d999)?(q+1"b1):"d0;
    end

endmodule