Subject: Re: pciide0 bus-master DMA error:...status=0x6
To: Manuel Bouyer <>
From: Andrea Rossignoli <>
List: port-i386
Date: 04/30/2003 09:40:42
First of all thank you,
I downloaded the sources from your link.
I read that the chipset is a sis651 ( possible ? ).
I created a CD-ROM from the cdrom.iso that I found from your link,
I booted it and the device probing is okay :-) even with udma support
enabled from BIOS.
The only problem I found was that when I choose the installation media and I
select the cd-rom it will show me that error again and the
pc will reset.
I can't report the error precisely because the pc resets after 1-2 seconds.
The CDrom is on the same ide of the hdd, and the cd-rom is a bit "old" (
20x ).
Re-reading your post I'm not sure I did follow your instructions exactly

Actually that's not an issue for me ( I mean the udma support ),
because I'm using that pc without udma because I'm going to build a NetBSD
distribution for the board Net4501,
but that's another matter and I'll ask for that in another post.

If you want I could use my home machine if you want to do some tests for

Thanks again,

:-) Mr Andrea R.

----- Original Message ----- 
From: "Manuel Bouyer" <>
To: "Andrea Rossignoli" <>
Cc: <>
Sent: Sunday, April 27, 2003 18:50
Subject: Re: pciide0 bus-master DMA error:...status=0x6

> On Sun, Apr 27, 2003 at 09:32:22AM +0200, Andrea Rossignoli wrote:
> > Hi,
> > I'm trying to install NetBSD 1.6.1 from a CD-ROM on a new pc, it's an
> > terminator p4 533.
> > The installation process will stop showing me this message:
> >
> > pciide0:0:0: lost interrupt
> >            type: ata tc_bcount: 512 tc_skip: 0
> > pciide0:0:0: bus-master DMA error: missing interrupt, status=0x61
> >
> > I checked the BIOS and it's not possible to disable U/DMA.
> >From what I found, it looks like this box has a sis650 chipset.
> This isn't supported in NetBSD 1.6.1, but please try the install media and
> kernel at
> You can install the 1.6.1 userland on top of this, but keep the
> 1.6.1_RC2 kernel from here, or compile a new one with the patch you'll
> find in this directory.
> -- 
> Manuel Bouyer <>
>      NetBSD: 24 ans d'experience feront toujours la difference
> --