[patch] XVideo on my Radeon
benh at kernel.crashing.org
Wed Jan 25 17:35:43 PST 2006
> IIRC, note that these cards don't even have two dacs (and there is no
> notion of that in the driver code, only tvdac and primary dac), hence
> the DVI-D connector.
Hrm... all cards have 2 DACs unless they are really old r100/rv100
> This is a special "feature" of the r200 chip, it
> can drive two displays but only has one internal dac. Some cards with
> that chip though feature an external dac, like the original ati cards
> (though I believe there were also cards available with a dvi-i connector
> but not carrying analog signals...), but especially 8500le and 9100
> cards not always do. This may explain the weird looking table. I think
> for tv-out those cards always used the rage theatre chip, thus they
> could still use twin-view with crt + tv out.
Hrm... are you sure ? I though they all had a TV DAC (secondary DAC)
(and additionally all rv chips and post r200 chips have an internal ERT
TV encoder too).
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