OGDCFAN99 wrote:I wonder how it auto senses?
It will probably be able to detect the initial video signal sent by the DC and switch modes accordingly. A component cable can just send 480i/p without any sensing circuitry, but the DC cable probably needs some kind of internal switch to trick the DC into thinking that either a VGA box or composite cable is connected, depending upon what the game wants.
It's important to be clear that there are three types of DC software. The first is fully compatible with the VGA box and will use VGA mode automatically when one is connected, since the VGA flag is enabled in the game's boot sector. The second is also fully compatible with the VGA box, but because the developer incorrectly set the VGA flag in the boot sector to false, it won't accept a VGA box unless you use a boot disc to trick it into running in VGA mode. The third type is incompatible with the VGA box, because it renders its graphics in such a way that 480p output is impossible, or at least that's what I've been led to believe.
The only thing the component cable will be able to do is to switch back to 480i mode when a game says that it doesn't support VGA mode, and this will happen for both type 2 and type 3 games. You'll still need a boot disc or a hacked boot sector to boot type 2 games in VGA mode, AFAIK.