From owner-freebsd-current Sun Jul 16 17:37:23 2000 Delivered-To: freebsd-current@freebsd.org Received: from gndrsh.dnsmgr.net (GndRsh.dnsmgr.net [198.145.92.4]) by hub.freebsd.org (Postfix) with ESMTP id 6A77B37B63D for ; Sun, 16 Jul 2000 17:37:20 -0700 (PDT) (envelope-from freebsd@gndrsh.dnsmgr.net) Received: (from freebsd@localhost) by gndrsh.dnsmgr.net (8.9.3/8.9.3) id RAA24682; Sun, 16 Jul 2000 17:37:01 -0700 (PDT) (envelope-from freebsd) From: "Rodney W. Grimes" Message-Id: <200007170037.RAA24682@gndrsh.dnsmgr.net> Subject: Re: dc driver and underruns (was: Strangeness with 4.0-S) In-Reply-To: <200007162359.TAA00352@khavrinen.lcs.mit.edu> from Garrett Wollman at "Jul 16, 2000 07:59:54 pm" To: wollman@khavrinen.lcs.mit.edu (Garrett Wollman) Date: Sun, 16 Jul 2000 17:37:00 -0700 (PDT) Cc: freebsd-current@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > < said: > > > Ohh... and a finally note, DEC blew the chip design by only including > > a 160byte threshold point given that PCI 2.0 spec says it should have > > been 500bytes!! > > It wouldn't be the first thing DEC had screwed up in the design of > these NICs. On the other hand, Intel has owned the silicon for a > couple of years now, which is more than enough time to unscrew it if > they really wanted to. Clearly, they'd rather be selling 82559s.... As far as I can tell the fxp driver doesn't even use the tx_fifo in the 825xxx chips :-) -- Rod Grimes - KD7CAX @ CN85sl - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message