From owner-freebsd-current Sun Jan 3 13:00:16 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA07176 for freebsd-current-outgoing; Sun, 3 Jan 1999 13:00:16 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from dingo.cdrom.com (castles317.castles.com [208.214.167.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA07171 for ; Sun, 3 Jan 1999 13:00:14 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (LOCALHOST [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id MAA07373; Sun, 3 Jan 1999 12:57:00 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Message-Id: <199901032057.MAA07373@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Peter Dufault cc: current@FreeBSD.ORG Subject: Re: if_ep probe failures related to reading back settings In-reply-to: Your message of "Sat, 02 Jan 1999 09:09:42 EST." <199901021409.JAA18234@hda.hda.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 03 Jan 1999 12:56:59 -0800 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I have trouble properly reading the settings back from a 3C509 on > a 180MHz Cyrix MediaGX crash box. The result is that it won't > always probe in at boot. > > I find that by increasing the DELAY by a factor of 10 and more > importantly adding a delay before reading each serial bit of data > (I assume we're reading back a serial EEPROM): ... > Can someone check if we may be violating timings on reading that > serial bus, or is it likely that this Cyrix has an inw that is too > fast and I have to monkey with some BIOS settings? If Bill Paul can't help you (I think he has the '509 documentation), then I would just bump the delays and be done with it. I don't see reading it too slowly as being a problem, and erring on the side of caution is always desirable. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message