Subject: Re: kern/11960: ATA PIO fallback to mode 0 is too cautious
To: Lloyd Parkes <>
From: Manuel Bouyer <>
List: netbsd-bugs
Date: 01/16/2001 20:53:30
On Tue, Jan 16, 2001 at 01:15:53PM +1300, Lloyd Parkes wrote:
> > How does it interract ?
> On the Apollo chipsets it seems that the DMA mode is tied to be two
> less than the PIO mode, with an obvious minimum of zero. The gentler
> we are with the PIO mode, the better the DMA mode will work.

This is true for most, if not all, chipsets.
Using 3 instead of 0 should be OK.

> > Your patch is incomplete, at best :) comments and printf should be changed to
> D'oh. Mea culpa. I blame the fact that I submitted the fix while at
> work, and I didn't have access to a decently sized emacs window. I
> will fix the fix.

Ok, thanks !

Manuel Bouyer <>