From owner-freebsd-questions Wed Sep 6 12:33:16 1995 Return-Path: questions-owner Received: (from majordom@localhost) by freefall.freebsd.org (8.6.11/8.6.6) id MAA23510 for questions-outgoing; Wed, 6 Sep 1995 12:33:16 -0700 Received: from who.cdrom.com (who.cdrom.com [192.216.222.3]) by freefall.freebsd.org (8.6.11/8.6.6) with ESMTP id MAA23499 for ; Wed, 6 Sep 1995 12:33:15 -0700 Received: from Root.COM (implode.Root.COM [198.145.90.17]) by who.cdrom.com (8.6.11/8.6.11) with ESMTP id MAA26596 for ; Wed, 6 Sep 1995 12:33:04 -0700 Received: from corbin.Root.COM (corbin [198.145.90.34]) by Root.COM (8.6.12/8.6.5) with ESMTP id MAA03561; Wed, 6 Sep 1995 12:29:27 -0700 Received: from localhost (localhost [127.0.0.1]) by corbin.Root.COM (8.6.11/8.6.5) with SMTP id MAA26488; Wed, 6 Sep 1995 12:31:23 -0700 Message-Id: <199509061931.MAA26488@corbin.Root.COM> To: "Daniel M. Eischen" cc: gryphon@healer.com, questions@freebsd.org Subject: Re: Known working ethernet cards In-reply-to: Your message of "Wed, 06 Sep 95 14:00:36 CDT." <9509061900.AA07519@iworks.InterWorks.org> From: David Greenman Reply-To: davidg@Root.COM Date: Wed, 06 Sep 1995 12:31:22 -0700 Sender: questions-owner@freebsd.org Precedence: bulk >I have an SMC Ether-EZ (8416) installed on a FreeBSD machine that has >been working flawlessly for a few months. My only disappointment was >having to use the DOS utility provided with the card to set the IRQ, >IO memory address, etc. - our FreeBSD machine had no DOS/Windows on it >and we had to take apart another machine in order to confgure the card. > >I had expected this card to have 16K of RAM, but it only has 8K. I >haven't performed any timing tests to see if this affects performance. Unfortunately, the multi-buffering technique that is used in the transmit portion of the device driver is effectively disabled when the card has only 8k of RAM. This is necessary in order to provide maximum receive buffering. This will likely reduce max transmit performance to around 600-700K/second. -DG