From owner-freebsd-scsi Wed Feb 21 00:52:08 1996 Return-Path: owner-freebsd-scsi Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id AAA18817 for freebsd-scsi-outgoing; Wed, 21 Feb 1996 00:52:08 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id AAA18708 Wed, 21 Feb 1996 00:51:40 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id JAA07051; Wed, 21 Feb 1996 09:51:29 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id JAA10097; Wed, 21 Feb 1996 09:51:29 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.3/8.6.9) id JAA20071; Wed, 21 Feb 1996 09:48:28 +0100 (MET) From: J Wunsch Message-Id: <199602210848.JAA20071@uriah.heep.sax.de> Subject: Re: SCSI info needed. To: urcf@fang.cs.sunyit.edu (Rodney C. Forbes) Date: Wed, 21 Feb 1996 09:48:27 +0100 (MET) Cc: questions@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199602210607.BAA01558@fang.cs.sunyit.edu> from "Rodney C. Forbes" at Feb 21, 96 01:07:26 am X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL24 ME8a] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk As Rodney C. Forbes wrote: > > 1. What kind of problems would I be facing regarding using this SCSI > controller/driver to run an all SCSI FreeBSD system? If I It will be as slow as your IDE solution. However, you still get a chance to upgrade to a better controller (and even a very old AHA1540 will do) without throwing away the other equipment. > will need to buy a bus-mastering SCSI controller, I can, but I > would rather not right at this moment. Is there an update to > this driver that would allow me to utilize it's DMA features? Very unlikely. There's too few interest, nobody of the ``classic'' hackers seems to have the hardware and/or time to do it. Of course, you are welcome to imporove it. :) You've got at least two of the missing things, hardware and interest. It looks that the guy who wrote the driver started to think about DMA, but didn't finish it ever. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)