In Section 8.9.5 of the Vybrid Reference manual, it has some information on the VADC interface. Register misc2 bit 9 is used to toggle the source the the VIU. Is this feature still supported by the Vybrid? Only particular models (Auto)? What kind of input signals are appropriate? Component NTSC? Is there some sort of NDA process for this? Oddly the diagram has four ADC inputs? I don't know of any color standards with four inputs.