Hi! The BT documentation contains only very few information about the 4:1 muxer in the chip. Does anyone have more information? It says it's not real-time (pixel based) and during the switching time more than one input can be connected to together. Is it true? Why is it not real-time? HOw much time is needed for a switch? It's controlled through a memory mapped register. How frequently is it processed? I tried to optimize the switching if all 4 channels are required but if I switch during vsync I get the blank lines in the middle of the picture, I guees because it has some delay (half picture?). Gabor