QUOTE(Heimdall @ Oct 6 2008, 08:05 PM)

1. I don't think you can on a 1.6. You need a VGA BIOS, and I don't think there's a 1.6 VGA BIOS. Someone else might be able to confirm or deny this........
No 1.6 VGA bios, there's no documentation for the xcalibur video encoder.
QUOTE(ichigo3223 @ Oct 12 2008, 12:01 AM)

VGA is very tricky in Xbox ver 1.6. The M$ guys just changed a lot to the Xbox in this version and one of those things is the Video Encoder thing.
The only suggestion I would have is get yourself a Component Cable and buy a Component to VGA Adapter. This way (depending on you monitor/tv) you can play most Xbox games in 720p and use most homebrews with 1080i. I think this is way easier and cheaper than building your own VGA RGB converter thingy.
That wont work, since the 1.6 will only be outputting color signals on the Blue and Red connectors (Pb&Pr) cos that is how component works, (color on red Pr and blue Pb wires and sync & luminance on green Y). The earlier versions have a bios available to make the xbox output the green color on the Y cable so you get:
Sync and green on Y (green cable), Red on Pr (red cable) and Blue on Pb (blue cable). So your two choices for a 1.6 is to build a separate YPrPb to RGB converter to get the green color from the PrPb channels and put it on the Y channel (like I already suggested), or play games with the missing green color signal, i.e. green tint.