Hi everyone ,
I am working in project that need to display an image using DE2 board but my problem is that I am beginner on using veirelog. :( :(
any one have code on veirelog that interface the VGA to DE2 board ?? :(
I have this code and I don't know if it is OK or not >>>>
module hvsync_generator(clk, vga_h_sync, vga_v_sync, inDisplayArea, CounterX, CounterY);
input clk;
output vga_h_sync, vga_v_sync;
output inDisplayArea;
output [9:0] CounterX;
output [8:0] CounterY;
//////////////////////////////////////////////////
reg [9:0] CounterX;
reg [8:0] CounterY;
wire CounterXmaxed = (CounterX==10'h2FF);
always @(posedge clk)
if(CounterXmaxed)
CounterX <= 0;
else
CounterX <= CounterX + 1;
always @(posedge clk)
if(CounterXmaxed) CounterY <= CounterY + 1;
reg vga_HS, vga_VS;
always @(posedge clk)
begin
vga_HS <= (CounterX[9:4]==6'h2D); // change this value to move the display horizontally
vga_VS <= (CounterY==500); // change this value to move the display vertically
end
reg inDisplayArea;
always @(posedge clk)
if(inDisplayArea==0)
inDisplayArea <= (CounterXmaxed) && (CounterY<480);
else
inDisplayArea <= !(CounterX==639);
assign vga_h_sync = ~vga_HS;
assign vga_v_sync = ~vga_VS;
endmodule
