> > > We want two independent video heads. > > > > IIRC, 2 dual-link DVI plus s-video. > > The way OGD1 is hooked up: > Head 1 is connected to 330MHz analog and dual-link DVI. > Head 2 is connected to TV/s-video and dual-link DVI. > > There are only two video controllers, and lots of pins are shared. > > > Would 1 dual-link DVI plus > > 1 single-link DVI plus s-video be enough? Would it save significant > > space? Single-link is supposed to be good for up to 1920x1200. How > > many people will need to drive two displays both larger than 1920x1200? > > I forget the exact pin arrangement, and I don't want to look it up. > There is probably too much signal dual-use for this to happen. > Besides, asking for three video controllers is just too much.
Let me try again. The suggestion is to take the existing plan and change one of the DVI from dual-link to single-link. If that saves enough gates to be worthwhile. > Even if the -50 is too small, we can still fit MOST of the design in > it and do tons of incremental work. > > There is that FPGA that plugs into an AMD64 socket. Expensive, and > > requires a mainboard with at least two CPU sockets, therefore not practical > > for a mass-production low-cost video solution, but perhaps useful for > > development? > > OGD1 has to be practical both for development and for mass sale to > people who need prototyping boards. By "mass-production low-cost video solution" I meant OGC1, not OGD1. > > Perhaps this could be a way to split out some optional 3D stuff, as a couple > > of us have suggested. Build a basic ECP2-50 board, and put the fancy 3D > > stuff > > in the AMD64 socket. The AMD64 socket has direct access to the > > hypertransport > > bus, thus very very high bandwidth available. This could turn out to be a > > better solution for high-end 3D than the SLI type kludge. > > Interesting idea, but this would require so much rework on the board > that we might as well wait until 2007. It is not obvious to me what would need to be reworked, other than you might need more bandwidth, forcing a change to PCIe. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
