[coreboot] coreboot support for AMD HT3
peter at stuge.se
Thu Oct 14 06:13:58 CEST 2010
Scott Duplichan wrote:
> At 1600x1200, 16-bit color is almost perfect. But the same
> resolution with 32-bit color results in a display that jumps so
> much it cannot be read. Why would 32-bit color make a difference?
Twice the bandwidth needed to get the graphics data out of RAM.
> I am thinking that refreshing 1600x1200 pixels 60 times per second
> takes a lot data, and that data has to cross the HT link. True
> color takes more data than high color, and true color may be
> exceeding the capacity of the cpu-RS780 link. The link is running
> at the slowest possible setting, 200 MHz, 8-bit.
Ouch! :\ That would seem to cause the problem.
Can't say about HT3 I'm afraid.
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