Subject: Re: kern/11293: UDMA is unstable on Iwill VD133PL (Apollo MVP3, IDE rev 0x10)
To: Manuel Bouyer <firstname.lastname@example.org>
From: Todd P. Whitesel <email@example.com>
Date: 10/25/2000 01:39:53
> Please try another thing: leave UDMA enabled in the kernel, and
> force Ultra mode 2 (or Ultra/33) in the BIOS instead of Ultra mode 4
> (or Ultra/66).
The BIOS doesn't let me set that, it only has "Auto" vs. "Disable" for
both PIO and UDMA, for each of four IDE devices.
But with a UDMA33 drive, I get the same spurious error behavior.
--- NOTE ---
After two days of success, the PIO-only mode tests have now exhibited the
same spurious errors, with both FreeBSD 4.1.1 and NetBSD 1.5_ALPHA2.
So that would suggest that this isn't a strictly UDMA issue after all,
but rather a very subtle VIA PC133 issue... yuck.
Todd Whitesel Anime Expo Information at
toddpw @ apricot.com http://www.anime-expo.org