On Sun, 13 Jun 2004 03:34:33 -0500, Ryan Underwood <[EMAIL PROTECTED]> wrote: > > > On Sat, Jun 12, 2004 at 12:11:48PM -0400, Alex Deucher wrote: > > > > I can help with the DVI stuff. I have a G550. > > What's the port configuration on it? I have a nagging curiosity that > the G450 may be able to swap the DAC<->connector mapping like the G550 > can. But it only seems that this swap would happen if:
It's got a DVI port and a vga port and you can swap the port to crtc mapping. > > - you have a card with a DVI and an analog output > - you ignore the DVI connector and put an analog monitor on the analog > connector. if you only have one head connected, that port gets crtc1. > > Not a common scenario. I know a lot of G550's come with a DVI and an > analog connector, but I've never seen a G450 like that. (The G450 > manual claims that they exist., however.) > > Anyway, if I can find someone with a G450 with that configuration, and > your G550 has the same, then we could verify that the two chips do both > indeed have the capability to swap DACs. G400-DH definitely does not, > because the Maven chip's DAC is hardwired to the second port. > > The fact that you can change both the CRTC<->DAC mapping and the > DAC<->connector mappings is a little confusing to say the least but I > think I've got a handle on it. > > Something else I'm curious about is hooking up two DVI monitors to a > G450 or G550 using a dual DVI cable. I guess in that case the DacG and > MGA-TVO are ignored completely, so do these cards have two TMDS > transmitters (one for each monitor on the cable)? Or are the TMDS > chips internal to the dual digital cables? Is that even possible? I though matrox sold a special version of tha card with 2 dvi ports in order to do that. As far as I recall, the g550 only had 1 integrated tmds transmitter. the cards with 2 dvi ports probably had an external transmitter for the second port. Alex > > > > -- > Ryan Underwood, <[EMAIL PROTECTED]> > > > > signature.asc - 1K > _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
