Date: Wed, 26 Jul 2000 13:05:30 -0700 From: David Greenman <dg@root.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: "Koster, K.J." <K.J.Koster@kpn.com>, "'FreeBSD Alpha mailing list'" <freebsd-alpha@FreeBSD.ORG> Subject: Re: fxp0 hangs my AXPpci33 Message-ID: <200007262005.NAA02751@implode.root.com> In-Reply-To: Your message of "Tue, 25 Jul 2000 14:59:21 EDT." <14717.58007.367265.507976@grasshopper.cs.duke.edu>
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>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. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org Manufacturer of high-performance Internet servers - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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