This line of discussion makes a case for designing a DDC tool, independently of whatever tools we (or others) create to exploit the SPI port. Can a tool that masquerades as a DDC device be plugged in between the board and the video cable, and set any arbitrary video mode without getting information from the physical display? If so, it may be worthwhile to consider a version of the DDC tool equipped with DIP switches, so that you don't need another computer to set up the tool before you can get a display. A DDC tool has the interesting property that no modification to either the ASIC or the OGC1 board is necessary to support it. However, there is the question of signal degradation due to transmission line reflections going through two sets of connector-to-board interfaces.
-------------- Original message ---------------------- From: Dieter <[EMAIL PROTECTED]> > > sometimes you dont have a tv. in a data center for example. the idea > > is to do what the engineers did not do. embed the mode info in the > > monitor. you want to solder the chip in the board > > Do you really want your grandma to open up a monitor with 25-30 KV > inside to add a DDC2 chip? > > The better monitors don't have HD-15 connectors, they have BNCs. > There is no DDC wire to solder the chip to. > > Useful for proving in the design of the OGD and OGC prototypes. > > Useful with other cards. Maybe someone wants to use a fixed freq > monitor with an ATI/Nvidia/... chip to play games. Or wants to > use their existing non-OGP chip to limp along on while waiting for > OGC to come out. > _______________________________________________ > 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)
