From owner-freebsd-hardware Tue Sep 17 10:22:38 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id KAA23512 for hardware-outgoing; Tue, 17 Sep 1996 10:22:38 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id KAA23493; Tue, 17 Sep 1996 10:22:33 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id KAA04369; Tue, 17 Sep 1996 10:21:18 -0700 From: Terry Lambert Message-Id: <199609171721.KAA04369@phaeton.artisoft.com> Subject: Re: Slow Etherlink To: craigs@os.com (Craig Shrimpton) Date: Tue, 17 Sep 1996 10:21:17 -0700 (MST) Cc: terry@lambert.org, jab@rock.anchorage.net, freebsd-hardware@FreeBSD.ORG, hackers@FreeBSD.ORG In-Reply-To: from "Craig Shrimpton" at Sep 16, 96 11:33:07 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > It means it can't transmit and receive at the same time. This is a card > > "feature", and if you haven't seen it before, your other OS has been > > lying to you (or it's one of the drivers that needs updated). > > > > In general, SIMPLEX, if capable of being fixed via a driver interface > > (usually it is not, as noted above), will only affect unidirectional > > throughput, generally out of the machine, and generally only for real > > data transferred (ie: it's not your "ping" problem, whatever your "ping" > > > > > What cards are "synchronous?" I use SMC EtherPower PCI cards (de0) > because they are basically plug and play under FreeBSD. I put 3 in a > FBSD router box and they all worked first try automagically! > > Any idea if the SMC drivers are updateable? The drivers are *always* updtatable. However, if the card simply does not have enough memory on board to hold both an inbound and an outbound buffer simultaneously, it *must* remain "simplex" no matter who writes the driver or how well. Just because other OS's don't report the fact doesn't make it any less a fact. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.