On Tue, Dec 06, 2005 at 10:23:44AM +0100, Attila Kinali wrote: > > Hmm.. so it's a specialized digital video interface to extend > existing graphics cards with additional output devices ? > > This sounds interesting. > > Not immediate but it's forseeable. OGD is meant for testing > everything we might put into OGA > > That sounds good, beside i think there is a huge demand > for dual screen and most are likely to want dual link. > > IMHO this is a very good idea. TV-Out is a huge demand, but > it's not something that all users need. If we can pull it out > of OGD and have a simple and more or less cheap daugher card > that provides that functionality, then we could get of with an > ever cheaper OGD board. The only thing that worries me is the > testing. If we split features out, they are less likely to be tested. > Which means more undetected bugs (not to talk about the added > complexity which also leads to more possible bugs). > > Attila Kinali
DVO is not specialised, it's more like the most common bus-layout output devices tend to support. The output devices used now will already adhere to that, and there's a good chance that the current design uses a 12bit bus already. The provision of headers for submodules, and the reduction of onboard devices, is where this would be different from the already almost finalised design. All depends on the availability and price of such submodules. Availability was the main problem with input/output submodules in the past and this is where opengraphics can provide a real difference. Since this is a fully open design, it might even allow people to create submodules themselves and allow for the most amazing output combinations ever. Not everyone will need all the devices summed up in the BOM. If one can easily get a duallink module (just a sil178 on a daughterboard) for an acceptable price, why provide duallink from the getgo? About TV-out not being neccessary for everyone, this is imho a non-issue, as a TV encoder usually is able to do RGB + H/VSync, making it a good secondary ramdac. A second or even third TV encoder would, with the DVO headers, then become a possibility, for those who are so inclined. It's probably way too late for this sort of thing to happen for OGD, but it would've been real handy for driver testing and even hardware design. Luc Verhaegen. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
