From owner-freebsd-questions Fri Sep 6 21:15:47 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id VAA02127 for questions-outgoing; Fri, 6 Sep 1996 21:15:47 -0700 (PDT) Received: from mail.cs.utexas.edu (root@mail.cs.utexas.edu [128.83.139.10]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id VAA02114 for ; Fri, 6 Sep 1996 21:15:42 -0700 (PDT) Received: from opus.cs.utexas.edu (miker@opus.cs.utexas.edu [128.83.143.208]) by mail.cs.utexas.edu (8.7.1/8.7.1) with ESMTP id XAA11884 for ; Fri, 6 Sep 1996 23:15:29 -0500 (CDT) From: Hung Michael Nguyen Received: by opus.cs.utexas.edu (8.7.1/Client-1.4) id XAA53152; Fri, 6 Sep 1996 23:15:28 -0500 Message-Id: <199609070415.XAA53152@opus.cs.utexas.edu> Subject: High speed async. serial cards To: questions@freebsd.org Date: Fri, 6 Sep 1996 23:15:28 -0500 (CDT) X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi, I have my 3COM Impact IQ working with my 2.1.0 system. It's great, except for one thing. With 64k, I can max out the capacity of the channel, e.g. I get around 7.5KB/sec. However, with 128k, I only manage to get 9.5KB/sec or so, better, but certainly a waste of two B channels, with which I have seen a router do 15KB/sec. I'm sure it's the serial port, since to get the most of the 128k link, I need at least 160k on the serial port. So, the $10000 question is, are there any affordable async cards that can do 230.4k or better, and is supported by 2.1.0 or 2.1.5? I wouldn't even mind getting the sio driver from current and putting that in, if that works. Thanks, Mike.