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Date:      Wed, 26 Jul 2000 15:32:49 -0700 (PDT)
From:      Matthew Jacob <mjacob@feral.com>
To:        Bernd Walter <ticso@cicely8.cicely.de>
Cc:        David Greenman <dg@root.com>, Andrew Gallatin <gallatin@cs.duke.edu>, "Koster, K.J." <K.J.Koster@kpn.com>, "'FreeBSD Alpha mailing list'" <freebsd-alpha@FreeBSD.ORG>
Subject:   Re: fxp0 hangs my AXPpci33
Message-ID:  <Pine.BSF.4.05.10007261532250.18265-100000@semuta.feral.com>
In-Reply-To: <20000727002844.A35107@cicely8.cicely.de>

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Well, I have a Multia I haven't fired up lately... maybe it's time... :-)....

-matt


On Thu, 27 Jul 2000, Bernd Walter wrote:

> On Wed, Jul 26, 2000 at 01:25:22PM -0700, Matthew Jacob wrote:
> > 
> > > >I think that the SEEPROM reading might be very timing
> > > >dependant... David?  I'm worried that whatever the path in the chipset
> > > 
> > >    It is timing dependant, but the driver inserts more than enough delay
> > > by using DELAY(1) for 1us. I think the requirement is much much less than
> > > that (< .5us), so if timing really is the problem, then it leads me to wonder
> > > if DELAY() might be somewhat broken on Alpha for small delays. A quick way
> > > to test for that would be to change the DELAY(1)'s to DELAY(10) or more.
> > 
> > It shouldn't be. It's using the rpcc register to do more precise timing. It
> > *used* to be about 30% off, but now should be quite accurate- but it's
> > certainly possible. I'll be interested in hearing this.
> > 
> > I forget- is this with 4.0 or with -current/4.1? I seem to recall that this
> > source base is a recent source base change even for 4.1- (July 4th).
> 
> To add something to the problem I had.
> My problem was after changing a 4.0-current system (short time before
> 4.0-RELEASE) from an axppci33 board to a PC164.
> After I got this problems I updated to a recent STABLE and asked on the
> alpha list.
> Even the original bug was there before the card worked fine with the
> axppci33 board. I used it with and with cache installed.
> The difference is that my card is older than the 559 - I asume it's a 557.
> 
> -- 
> B.Walter              COSMO-Project         http://www.cosmo-project.de
> ticso@cicely.de         Usergroup           info@cosmo-project.de
> 



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