먼가 이상하지만 640x480x60 되는 소스 발견

DE0-nano에 LemonLite RGB 보드 사용

모니터 마다 해상도 출력이 좀 다른데 머가 문제일까..

일단 눈을 띄우는데는 성공했으니 뭐가 문제인지는 좀 찾아 봐야 할 듯..

vga640x480 vga( CLOCK_50, KEY[0], LED, GP0[6], GP0[5], {GP0[16],GP0[19],GP0[18],GP0[21]}, {GP0[12],GP0[15],GP0[14],GP0[17]}, {GP0[8],GP0[9],GP0[10],GP0[13]} );

module vga640x480( input clk, input rst, output [7:0] LED, output reg hsync, output reg vsync, output [3:0] r, output [3:0] g, output [3:0] b ); reg clk25; reg [9:0] horizontal_counter; reg [9:0] vertical_counter; reg [9:0] X; reg [9:0] Y; wire [7:0] red; wire [7:0] green; wire [7:0] blue; assign r[3:0] = ((horizontal_counter >= 144)  && (horizontal_counter < 784)  && (vertical_counter >=39) && (vertical_counter < 519)) ? red : 4'b000;  assign g[3:0] = ((horizontal_counter >= 144)  && (horizontal_counter < 784)  && (vertical_counter >=39) && (vertical_counter < 519)) ? green : 4'b000;  assign b[3:0] = ((horizontal_counter >= 144)  && (horizontal_counter < 784)  && (vertical_counter >=39) && (vertical_counter < 519)) ? blue : 4'b000;  assign red =   ((horizontal_counter >= 144)&&(horizontal_counter < 344) ) ? 4'b1111 : 4'b0000; assign green = ((horizontal_counter >= 344)&&(horizontal_counter < 544) ) ? 4'b1111 : 4'b0000; assign blue =  ((horizontal_counter >= 544)&&(horizontal_counter < 784) ) ? 4'b1111 : 4'b0000; always @(posedge clk) begin if (clk25 == 0) begin    clk25 <= 1; end    else begin clk25 <= 0;    end end always @(posedge clk25) begin if ((horizontal_counter > 0) && (horizontal_counter < 97))// -- 96+1 begin hsync <= 0; end else begin hsync <= 1; end  if ((vertical_counter > 0 ) && (vertical_counter < 3 )) //-- 2+1 begin vsync <= 0; end else begin vsync <= 1; end horizontal_counter <= horizontal_counter+1;      if (horizontal_counter == 800)  begin vertical_counter <= vertical_counter+1; horizontal_counter <= 0; end      if (vertical_counter == 521) begin vertical_counter <= 0; end end endmodule

[링크 : https://github.com/pmezydlo/DE0-Nano-SOC-VGA/blob/master/vgaram.v]