题解 | #简易秒表#

module count_module( //秒表计数器 input clk, input rst_n, output reg [5:0]second, output reg [5:0]minute );

reg flag1 = 0;

always@(posedge clk or negedge rst_n)begin
   if(rst_n == 1'b0)begin
       second <= 6'd0;
   end
   else begin
       if(second >= 6'd60)begin
           second <= 6'd1;
           flag1 <= 1'b1;
       end
       else begin
               second <= second + 1'b1;
               flag1 <= 1'b0;
       end
   end
end

always@(posedge flag1 or negedge rst_n)begin
   if(rst_n == 1'b0)
       minute <= 6'd0;
   else begin
       if(minute >= 6'd59)begin
           minute <= 6'd60;
       end
       else begin
           minute <= minute + 1;
       end
   end
   
end

endmodule