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daemon@ATHENA.MIT.EDU (Richard Waltham)
Mon Mar 24 13:54:32 1997

Date: 	Mon, 24 Mar 1997 18:41:30 GMT
From: Richard Waltham <dormouse@farsrobt.demon.co.uk>
To: submit-linux-dev-scsi@ratatosk.yggdrasil.com

Newsgroups: linux.dev.scsi
Path: dormouse
From: dormouse@farsrobt.demon.co.uk (Richard Waltham)
Subject: Re: Shared interrupts for ncr8xx?
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Organization: home
Message-ID: <E7K993.CzC@farsrobt.demon.co.uk>
References: <33355F2F.1395ED39@newton.dialix.oz.au>
Date: Mon, 24 Mar 1997 18:41:27 GMT

David Gray (davidg@newton.dialix.com.au) wrote:
: Hi,

: Pardon me if this is a FAQ...

: Can someone confirm whether PCI interrupt sharing is supported in the
: ncr53c8xx scsi drivers? I want to put 810 and 875 based cards in a
: machine together. There is mention of it in the README.ncr53c8xx file in
: the 2.0.29 kernel distribution, but it doesn't seem to commit either
: way. Are there any performance issues with interrupt sharing?

: Please reply directly to me and I will summarise to the list if there is
: other interest. I am happy to supply more detail (card / system details)
: if required.

: Cheers,
: David Gray.

Yes!.

One machine I have insists on setting the interrupts for three ncr cards to
the same interrupt IRQ 12. NO problems at all. Haven't noticed any problems
with performance either.

This was with ncr53c8xx ver 1.18b. Just upgraded to 1.18c and don't expect
any problems either.

Richard
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