Date: Sun, 23 Jun 1996 00:11:54 +0200 (MET DST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: bde@zeta.org.au (Bruce Evans) Cc: FreeBSD-hackers@freebsd.org, revr@cadre.nl Subject: Re: HELP: serial port grief on Asus P55TP4N Message-ID: <199606222211.AAA05710@yedi.iaf.nl> In-Reply-To: <199606221912.FAA09329@godzilla.zeta.org.au> from "Bruce Evans" at Jun 23, 96 05:12:54 am
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As Bruce Evans wrote... > >I'm sending this to -hackers on behalf of a friend of mine who has > >just converted to FreeBSD 2.1R. His system is a P100 on a Asus > >P55TP4N with 32Mb, SC200 and ATI Mach64 VGA. > > >He has all sorts of problems when using the internal serial ports > >of the Asus in combination with UUCP. It's really weird... :-( > > >The uucp config files are identical to mine (I have a P55TP4XE). > > >Symptoms: > > >- when X was running -> console messages 'tty level buffer overflow' > >- without X -> errors logged by uucp 'uucp checksum failed' > >- he also tried ijppp and that seems to work OK... (???) > > Uucp checksum errors are known to be caused by bugs in the UMC i/o > chip which is found in some ASUS motherboards (e.g. the P55TP4XE > rev.2.4). The UARTs lose sync when their speed is set while data Bruce, are you sure about the P55TP4XE? I just spent some time with a flashlight to inspect my XE and found a SMC FDC37C665IR chip that (looking at the etch wiring) seems to (also) control the serial lines. I could not find a UMC chip on my mainboard. Rene (the 'problem owner') could you please check your mainboard to see which chip it uses? Wilko _ __________________________________________________________________________ | / o / / _ Wilko Bulte email: wilko@yedi.iaf.nl |/|/ / / /( (_) Private FreeBSD site - Arnhem - The Netherlands --------------------------------------------------------------------------------
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