[Soekris] net5501 - Enabling udma/66+ and reliability

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Jan 20 06:26:10 UTC 2009


In message <497500C9.8010900 at megahurts.dk>, Rune Petersen writes:

>1) Is there a "nicer" way to enable udma/66+ speeds on the net5501 rather than 
>hacking the ata driver?

No, not currently.

>2) Is the 80-wire simply broken on the net5501 or isn't udma/66+ speeds supported?

Søren didn't do the 80-wire trick correctly.

>3) since it doesn't work "out of the box"; I have to ask if it is considered 
>safe to run a SATA disk at udma/100.

You shouldn't get too much trouble with it, but the performance gain
in practice is also limited.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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