From owner-freebsd-hardware Sat Oct 5 02:35:30 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id CAA05571 for hardware-outgoing; Sat, 5 Oct 1996 02:35:30 -0700 (PDT) Received: from vector.jhs.no_domain (slip139-92-42-51.ut.nl.ibm.net [139.92.42.51]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id CAA05565; Sat, 5 Oct 1996 02:35:22 -0700 (PDT) Received: from vector.jhs.no_domain (localhost [127.0.0.1]) by vector.jhs.no_domain (8.7.5/8.6.9) with ESMTP id AAA23582; Fri, 4 Oct 1996 00:17:06 +0100 (MET) Message-Id: <199610032317.AAA23582@vector.jhs.no_domain> To: Christoph Kukulies cc: freebsd-hardware@freebsd.org Subject: Re: sios w or w/o fifo - a difference for FreeBSD? From: "Julian H. Stacey" Reply-To: "Julian H. Stacey" Organization: Vector Systems Ltd. Mailer: EXMH 1.6.7, PGP available X-Address: Holz Strasse 27d, 80469 Munich, Germany X-Phone: +49.89.268616 X-Fax: +49.89.2608126 X-Web: http://www.freebsd.org/~jhs/ In-reply-to: Your message of "Tue, 01 Oct 1996 13:07:51 +0100." <199610011207.NAA08627@gilberto.physik.rwth-aachen.de> Date: Fri, 04 Oct 1996 00:17:05 +0100 Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi, Reference: > From: Christoph Kukulies > Subject: Re: sios w or w/o fifo - a difference for FreeBSD? > Date: Tue, 1 Oct 1996 13:07:51 +0100 > Message-id: <199610011207.NAA08627@gilberto.physik.rwth-aachen.de> > > > I wonder if it might be crucial to use a FIFO sio rather than > a normal 16550 in a serial card when dealing with modems at higher > speeds. > > Is this an issue for FreeBSD given that the sios are interrupt driven > anyway? I still run my slip con. to my isp with a 16450 (multiport) at 57600 Ive got 2 '550s here, but one board'd need desoldering, & the board in the other box is socketed, but rejects em, so haven't got round to it, yet, my sys does take a hammering when I'm connected, but I drive it hard, i run hardware flow control. Julian -- Julian H. Stacey jhs@freebsd.org http://www.freebsd.org/~jhs/