From owner-freebsd-scsi@FreeBSD.ORG Wed Jan 25 10:26:26 2006 Return-Path: X-Original-To: freebsd-scsi@FreeBSD.ORG Delivered-To: freebsd-scsi@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 056FE16A41F for ; Wed, 25 Jan 2006 10:26:26 +0000 (GMT) (envelope-from matthias.andree@gmx.de) Received: from mail.gmx.net (mail.gmx.de [213.165.64.21]) by mx1.FreeBSD.org (Postfix) with SMTP id D572443D58 for ; Wed, 25 Jan 2006 10:26:24 +0000 (GMT) (envelope-from matthias.andree@gmx.de) Received: (qmail invoked by alias); 25 Jan 2006 10:26:23 -0000 Received: from p50911ED7.dip0.t-ipconnect.de (EHLO m2a2.dyndns.org) [80.145.30.215] by mail.gmx.net (mp039) with SMTP; 25 Jan 2006 11:26:23 +0100 X-Authenticated: #428038 Received: from localhost (localhost [127.0.0.1]) by merlin.emma.line.org (Postfix) with ESMTP id 20EE62005D4 for ; Wed, 25 Jan 2006 11:26:22 +0100 (CET) Received: from m2a2.dyndns.org ([127.0.0.1]) by localhost (m2a2.dyndns.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 18589-09 for ; Wed, 25 Jan 2006 11:26:19 +0100 (CET) Received: by merlin.emma.line.org (Postfix, from userid 500) id 8D49B200F66; Wed, 25 Jan 2006 11:26:19 +0100 (CET) From: Matthias Andree To: freebsd-scsi@FreeBSD.ORG In-Reply-To: <200601251000.k0PA02CY070581@lurza.secnetix.de> (Oliver Fromme's message of "Wed, 25 Jan 2006 11:00:02 +0100 (CET)") References: <200601251000.k0PA02CY070581@lurza.secnetix.de> X-PGP-Key: http://home.pages.de/~mandree/keys/GPGKEY.asc Date: Wed, 25 Jan 2006 11:26:19 +0100 Message-ID: User-Agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Virus-Scanned: amavisd-new at emma.line.org X-Y-GMX-Trusted: 0 Cc: Subject: Re: SCSI scanner, sym/ncr driver, pt(4) X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Jan 2006 10:26:26 -0000 Oliver Fromme writes: > Matthias Andree wrote: > > Oliver Fromme writes: > > > First I noticed that the NCR810 host adapter seems to be > > > supported both by ncr(4) and sym(4). I was unable to find > > > any documentation about the advantages of each. > > > > Try reading the man pages carefully. > > > > The differences have melted down somewhat in the past. > > > > There was a time when sym(4) didn't support the more efficient > > LOAD/STORE uncapable 810, 815, 825 chips (the A variants, where they > > exist, support LOAD/STORE). sym(4) has learned to use MEMMOVE on these, > > however. > > > > ncr(4) has never used LOAD/STORE, and lacks support for the 897 chip and > > the 1010 family. > > I've read about that LOAD/STORE and MEMMOVE stuff in the > manpage, but I'm not a SCSI expert, so that's really only > gibberish to me, I'm afraid. The driver downloads a program to the SCSI chip that handles the protocol, and the commands that these programs ("SCRIPTS") can use depend on the chip. > Hell, I do not even know if my "810" card is an "early NCR 810" which > sym(4) keeps talking about. Why bother as long as it works :-) > If you're just a user, the manpages fail to tell whether > the sym(4) or ncr(4) driver is preferred for an 810 host > adapter. Personally, I'd prefer sym(4). > I certainly agree with that. But pt(4) is not a scanner > driver, but a generic SCSI processing target driver, right? Never used it or even looked at the docs. > However, gimp and the xscanimage plugin use the full SANE > scanner device string for identifying it and storing their > configuration. AFAIR you can use xscan as GIMP plugin, too. -- Matthias Andree