Re: Freeze Upon /dev/fd0 Use
Richard Gooch (rgooch@atnf.csiro.au)
Wed, 2 Sep 1998 17:00:00 +1000
Linus Torvalds writes:
> In article <Pine.LNX.3.96.980901211921.32757G-100000@mirkwood.dummy.home>,
> Rik van Riel <H.H.vanRiel@phys.uu.nl> wrote:
> >On Tue, 1 Sep 1998, Alan Cox wrote:
> >>
> >> Thats very interesting indeed. Do you know what patchlevel (about) this
> >> problem started ?
> >
> >Alan, don't bother. I have one of these no-name Triton boards
> >and the problem is reproducible under DOS too. I have no doubt
> >that OS/2 or Rhapsody will show the same behaviour...
>
> Really? More than one active DMA at a time just killing the machine
> completely?
>
> The good news is that ISA DMA is broken anyway, and it might just be an
> acceptable option to not even have a "BROKEN_DMA" config option, but
> just unconditionally refusing to allow two concurrent ISA DMA streams.
> The only things I know of that do ISA DMA is the floppy and old sound
> cards, and if that means that the sound skips while accessing the floppy
> I don't know if we really need to worry too much..
Is ISA DMA really that broken? Isn't this just a case of some
motherboards not supporting multiple concurrent DMAs? Last night I
tried floppy access while playing some sounds and didn't experience
any problems.
Regards,
Richard....
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html