[109] in linux-scsi channel archive
Edge triggered NCR810 SCSI interupts (fwd)
daemon@ATHENA.MIT.EDU (Archie Cobbs)
Mon Mar 20 23:46:32 1995
From: Archie Cobbs <archie@CS.Berkeley.EDU>
To: linux-scsi@vger.rutgers.edu
Date: Mon, 20 Mar 1995 17:48:55 -0800 (PST)
The message below was sent to linux-kernel but never got a reply.
I'm forwarding it to linux-scsi in hopes it will get one here,
as I have the same question...
Thanks,
-Archie
Forwarded message:
> From: "Markus Kuhn (CIP 90)" <mskuhn@faui01.informatik.uni-erlangen.de>
> Message-Id: <199503082144.AA05513@faui01.informatik.uni-erlangen.de>
> Subject: Edge triggered NCR810 SCSI interupts
> To: linux-kernel@vger.rutgers.edu
> Date: Wed, 8 Mar 1995 22:44:20 +0100 (MET)
>
> On my machine, the boot messages of the NCR810 SCSI driver contain the
> disturbing line:
>
> Mar 6 22:51:51 cortex kernel: scsi0 : using edge triggered interrupts.
>
> However, on my board (ASUS PCI/I-486SP3G), the NCR SCSI chip is
> connected to a level triggered interrupt line and anything else
> (i.e. edge triggered) would not conform to the PCI specification.
>
> Everything works fine and reliable, only this message is irritating for
> someone familiar with internal details of PCI. (BTW, for a production level
> release, the 1.2.0 NCR driver outputs a little bit too much anyway during
> boot: 13 lines of test messages give it quite a pre-alpha touch ;-)
>
> Any explanation?
>
> Markus
>
> --
> Markus Kuhn, Computer Science student -- University of Erlangen,
> Internet Mail: <mskuhn@cip.informatik.uni-erlangen.de> - Germany
> WWW Home: <http://wwwcip.informatik.uni-erlangen.de/user/mskuhn>
