Date: Thu, 27 Jul 2000 00:28:45 +0200 From: Bernd Walter <ticso@cicely8.cicely.de> To: Matthew Jacob <mjacob@feral.com> 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: <20000727002844.A35107@cicely8.cicely.de> In-Reply-To: <Pine.BSF.4.05.10007261321030.18265-100000@semuta.feral.com>; from mjacob@feral.com on Wed, Jul 26, 2000 at 01:25:22PM -0700 References: <200007262005.NAA02751@implode.root.com> <Pine.BSF.4.05.10007261321030.18265-100000@semuta.feral.com>
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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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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