Re: Sun Blade 100 vs Ultra 60

[Michael Lorenz <macallan%netbsd.org@localhost>]

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Hello,

On Feb 11, 2008, at 21:40, Rafal Boni wrote:

> Kurt J. Lidl wrote:
> > The T1 has an onboard IDE controller, which uses the CMD 646  
> > controller.
> > Typically used for the CDROM in these machines. But it can be re- 
> > tasked
> > for hard drives as well.
>
> Heh, having used the CMD646 in the Ultra5 for disk access, I have  
> one word: "ewwwww".  Maybe the chip used in the T1/105 is a newer  
> rev, but the U5 got abysmal disk performance (due to UDMA being  
> disabled to work around a chip bug, AFAIR) when using the on-board  
> CMD646.

IIRC the IDE chip on the U5/U10 motherboard doesn't support UDMA at all.

have fun
Michael
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