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Date:      Thu, 31 Oct 1996 13:14:28 -0700
From:      Steve Passe <smp@csn.net>
To:        dg@root.com
Cc:        hackers@freefall.freebsd.org
Subject:   Re: ed0 timeouts 
Message-ID:  <199610312014.NAA07284@clem.systemsix.com>
In-Reply-To: Your message of "Fri, 25 Oct 1996 15:34:21 PDT." <199610252234.PAA09023@root.com> 

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Hi,

> >>like a problem acking ISA interrupts, or perhaps a bug in the handling of
> >>the interrupt masks.
> >
> >if it were a mask problem I would expect it to be more (always) prevelant,
> >but I suppose that doesn't eliminate the possibility of a race condition
> >on a mask.  As I mentioned earlier all the other hardware is perfectly
> >happy with this code: keyboard, disk controller, etc.  Peter reports
> >the floppy INTs work, don't know if the sio does or not...
> 
>    The network card likely has the highest burst/peak interrupt rate of all of
> these (except perhaps for the sio).
> 
> >I was hoping someone would mention some problem with these boards and
> >the INTA timing or somesuch thing.  When STefan gets some "PCI black magic"
> >fixed for me I will be able to substitute an SMP PCI Ultra.
> 
>    I assume you mean "SMC PCI Ultra"? As you suggest, that's going to need a
> few lines of code added to if_ed_p.c before it will work.
> 
> -DG
> 
> David Greenman
> Core-team/Principal Architect, The FreeBSD Project


FYI, I now have an SMC PCI 10B2 card running in the SMP kernel and
am seeing NO signs of INTerrupt loss.  This is with the 'de' driver.

--
Steve Passe	| powered by
smp@csn.net	|            FreeBSD

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