Thank you for reply.
The Qsys is divided in 3 subsystems
DetectionSystem: This system has the CI used to load and modify the frame in memory
VideoSystem: This system has the VIP IP. The IP between the FrameReader and the ITC removes the alfa channel from the pixeles. The pixeles are stored in argb in parallel 8 bits per colour channel.
MainSysten: Contains the cpu, ram controller, etc.
In the attached zip there screen shoots of the system, the QuitaAlpha source and the c program.
update 1:
After a few checks, I discover that if I connect the cpu to ssram and the frame reader to sdram, the problem becomes fixed but I would like that both stay connected to the sdram.