// Remember, this "magically works" on the Go Board.
// If you're using a different clock speed, you need to
// do a different thing here.
module VGA_Sync_Pulse_Generator (
  input i_Clk,
  output o_HSync,
  output o_VSync,

  output reg [$clog2(TOTAL_COLUMNS)-1:0] o_rawX,
  output reg [$clog2(TOTAL_ROWS)-1:0] o_rawY
);
  // remember overscan
  parameter ACTIVE_COLUMNS = 640;
  parameter ACTIVE_ROWS = 480;

  parameter TOTAL_COLUMNS = 800;
  parameter TOTAL_ROWS = 525;

  always @(posedge i_Clk) begin
    if (o_rawX == TOTAL_COLUMNS - 1) begin
      o_rawX <= 0;
      if (o_rawY == TOTAL_ROWS - 1) begin
        o_rawY <= 0;
      end else begin
        o_rawY <= o_rawY + 1;
      end
    end else begin
      o_rawX <= o_rawX + 1;
    end
  end

  assign o_HSync = (o_rawX < ACTIVE_COLUMNS) ? 1 : 0;
  assign o_VSync = (o_rawY < ACTIVE_ROWS) ? 1 : 0;
endmodule