From owner-freebsd-hackers Thu Aug 24 08:22:50 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.FreeBSD.org (8.6.11/8.6.6) id IAA24694 for hackers-outgoing; Thu, 24 Aug 1995 08:22:50 -0700 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.FreeBSD.org (8.6.11/8.6.6) with SMTP id IAA24670 for ; Thu, 24 Aug 1995 08:22:35 -0700 Received: from sax.sax.de by irz301.inf.tu-dresden.de with SMTP (5.67b+/DEC-Ultrix/4.3) id AA20816; Thu, 24 Aug 1995 17:22:31 +0200 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id RAA07136 for freebsd-hackers@freebsd.org; Thu, 24 Aug 1995 17:22:31 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.11/8.6.9) id QAA16172 for freebsd-hackers@freebsd.org; Thu, 24 Aug 1995 16:59:38 +0200 From: J Wunsch Message-Id: <199508241459.QAA16172@uriah.heep.sax.de> Subject: Re: ISDN Anyone? To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Thu, 24 Aug 1995 16:59:36 +0200 (MET DST) Reply-To: freebsd-hackers@freebsd.org (FreeBSD hackers) In-Reply-To: <17595.809267801@time.cdrom.com> from "Jordan K. Hubbard" at Aug 24, 95 05:36:41 am Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 821 Sender: hackers-owner@freebsd.org Precedence: bulk As Jordan K. Hubbard wrote: > [Zyxel 2864I] > Yeah, this would be *especially* hot if FreeBSD could talk parallel to > it in the same manner as lp0 but without the overhead of the current > lp0 driver. I've seen it really drag a machine down, and that wouldn't > be quite as tolerable with a dedicated ISDN parallel connection as your > main feed. This is unavoidable for a generic parallel ("Centronics") port, since it has never been designed to perform input operations, and the only chance to raise an interrupt is the ACK line. Perhaps we need a driver for the more "intelligent" parallel adaptors. I think, 115 kbps on a FIFO UART are a more solid solution by now. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)