Specifically how this ends up is somewhat up in the air, depending on what kinds of video chip(s) we choose. If we can do dual-link DVI, then the maximum dot rate is 330 mp/s. Analog is, similarly, dependent on the nature of the DAC.
On Thu, 17 Feb 2005 17:32:38 +0100, Attila Kinali <[EMAIL PROTECTED]> wrote: > On Thu, 17 Feb 2005 16:31:33 +0200 > Sakari Ailus <[EMAIL PROTECTED]> wrote: > > > I'd have a few questions about the specs of the card. I'm hoping it > > would be an improvement over the current MGA G* cards many people --- > > like me --- have. :-) :) > > > > What sort of display modes will be supported? The specifications say > > that the pixel clock is 250 MHz and 165 MHz for DVI. IMHO either sounds > > rather low for a modern graphics card especially when the aimed maximum > > resolution is over 2048x2048 (from wiki). > > No that's still enough. The problem is, that we are using an FPGA. > Clocking it over ~200MHz will be very challenging. > > > 165 MHz pixel clock would > > enable vertical refresh rate of about 40 Hz at that mode. The maximum > > pixel clock of even ~ 6 year old MGA G400 is 300 MHz (VGA). Or am I > > missing something? > > Nope. just dont use 2048x2048 as max. It's used for design, but > not for real world use. > With 1600x1200 which is much more realistic, you get 130Hz resp 83Hz. > That should be good enough. > The 160MHz limit comes from the DVI interface, it's limited by > the standard. > > > > Are there limitations on virtual display size? It's not used by many > > nowadays, but I'd like to use all the available memory for it, i.e. 128 > > MiB with RGBA frame buffer would allow having something like 8192x4096 > > virtual display. 8-) > > Virtual displays are done in software. Hardware may only help there. > So no limitations there. > > Attila Kinali > > -- > éãåããéãåã > _______________________________________________ > Open-graphics mailing list > [email protected] > http://lists.duskglow.com/mailman/listinfo/open-graphics > List service provided by Duskglow Consulting, LLC (www.duskglow.com) > _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
