From owner-freebsd-questions  Fri Jan 25  9:44:39 2002
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Date: Fri, 25 Jan 2002 11:47:27 -0600
From: Krzysztof Parzyszek <kparz@iastate.edu>
To: freebsd-questions@freebsd.org
Cc: Nils Holland <nils@tisys.org>
Subject: Re: Stry IRQs
Message-ID: <20020125114727.A22203@warsaw.scl.ameslab.gov>
References: <20020125165420.A77931@tisys.org>
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In-Reply-To: <20020125165420.A77931@tisys.org>; from nils@tisys.org on Fri, Jan 25, 2002 at 04:54:20PM +0100
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On Fri, Jan 25, 2002 at 04:54:20PM +0100, Nils Holland wrote:
> 
> I can say that these messages do not have any impact on computer or printer
> performance, but I'm wondering why they are there on my DFI and Epox
> boards, but not on my Chaintech board, even though it's the same printer
> with the same cable and the same parallel port BIOS (and kernel) settings.
> Any clues?

I don't have a clue, but I have found the following comment in
/usr/src/sys/i386/isa/intr_machdep.c and maybe it will help:


/*
 * Caught a stray interrupt, notify
 */
static void
isa_strayintr(vcookiep)
        void *vcookiep;
{
[...]
        /* for some reason, we get bursts of intr #7, even if not enabled! */
        /*
         * Well the reason you got bursts of intr #7 is because someone
         * raised an interrupt line and dropped it before the 8259 could
         * prioritize it.  This is documented in the intel data book.  This
         * means you have BAD hardware!  I have changed this so that only
         * the first 5 get logged, then it quits logging them, and puts
         * out a special message. rgrimes 3/25/1993
         */
[...]


-- 
<>> hektor@iname.com <Krzysztof Parzyszek>  Visit http://google.com
<<> (E)-N-[(4-Hydroxy-3-methoxyphenyl)methyl]-8-methyl-6-nonenamide

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