Cyclone III pin assignments problem

Hi,

I've just fixed this problem.

Turns out the problem comes from clocked video output and data clock.

There are two cases that the project works fine:

-The first one: 148.5Mhz data clock and clock video output is configured with "Fifo level at which to start output" = 1919 (in General Parameters).

-The second one: 134Mhz data clock and clock video output is configured with "Fifo level at which to start output" = 0 (in General Parameters).

I dont know where this configuration come from? Is there any document about this convention?

P/S: I'm trying to display a DVI 1080p60 video on screen