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28. Divide-by-4 Tick Generator

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Solving Approach

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Code

module tick_div4(
  input  wire clk,
  input  wire rst,
  output reg  tick
);
  reg [1:0] cnt;
  always @(posedge clk) begin
        if (rst) begin
            cnt <= 2'd0;
            tick  <= 1'b0;
        end else begin
            tick <= (cnt == 2'd3);

          
            if (cnt == 2'd3)
                cnt <= 2'd0;
            else
                cnt <= cnt + 1'b1;
        end
    end
endmodule

 

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