VGA problem

Hello,

Thanks for the reply and the manual, it helps me a lot ! I think the polarity is correct because I was able to run the DE2_TV example from the DE2 CD. The monitor I used was the old CRT and the clock I had tried were 25MHz and 25.2MHz. Other than that, the timing I used was:

// Horizontal Parameter ( Pixel )

parameter H_SYNC_CYC = 96;

parameter H_SYNC_BACK = 48;

parameter H_SYNC_ACT = 640;

parameter H_SYNC_FRONT = 16;

parameter H_SYNC_TOTAL = 800;

// Virtical parameter ( Line )

parameter V_SYNC_CYC = 2;

parameter V_SYNC_BACK = 32;

parameter V_SYNC_ACT = 480;

parameter V_SYNC_FRONT = 11;

parameter V_SYNC_TOTAL = 525;

The problem seem like the monitor did not turn on after downloading the program. I afraid my code got problem. I hope there got any simple VGA verilog code example that I can refer. Thanks !

Best Regards,

TWK