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<TITLE>sane-devel: Re: please advise: Mustek 12000SP, NCR810 & col</TITLE>
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<META NAME="Author" CONTENT="FJA van Zijp (ferencj@xs4all.nl)">
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<H1>Re: please advise: Mustek 12000SP, NCR810 & color stripes</H1>
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<!-- received="Mon Jan 22 13:49:33 2001" -->
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<STRONG>From:</STRONG> FJA van Zijp (<A HREF="mailto:ferencj@xs4all.nl?Subject=Re:%20please%20advise:%20Mustek%2012000SP,%20NCR810%20&%20color%20stripes&In-Reply-To=<3A6CB909.876.181376A@localhost>"><EM>ferencj@xs4all.nl</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Jan 22 2001 - 13:49:45 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0257.html">Kees Lemmens: "Fwd: Some little quirks in Epson Perfection 610 (epson backend)"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0255.html">Henning Meier-Geinitz: "Re: scanimage hangs on 'scanimage -L'"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0243.html">Mark Plowman: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0236.html">Henning Meier-Geinitz: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<HR NOSHADE><P>
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<P>
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<EM>> > I know. I pulled them both, the SC200 has a 53C810A chip and the
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</EM><BR>
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<EM>> > brandless one has a 53C810AE chip. Unlike the Asus, the last one
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</EM><BR>
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<EM>> > does not have a jumper to terminate the bus - I hope it does auto-
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</EM><BR>
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<EM>> > termination. But whatever it does, it works for the Mustek.
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</EM><BR>
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<EM>> *My* brand-less 810 SCSI controller card, which according to
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</EM><BR>
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<EM>> /proc/scsi/ncr53c8xx/0 is a:
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</EM><BR>
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<EM>> Chip NCR53C810, device id 0x1, revision id 0x2
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</EM><BR>
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<P>Well, over here /proc claims the same thing. But I meant to say I looked at the
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<BR>
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ICs themselves, and they are labeled as described. BTW, Symbios doesn't
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<BR>
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mention an 810AE on it's site but 825AE does exist, see
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<BR>
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<A HREF="http://www.lsilogic.com/techlib/techdocs/storage_stand_prod/index.html">http://www.lsilogic.com/techlib/techdocs/storage_stand_prod/index.html</A>
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<BR>
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(From LSI:) compared to the 825A, the 825AE differs little, it has certain
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<BR>
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Microsoft PC 97 enhancements for power management support.
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<BR>
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I assume the same goes for the 810A and 810AE.
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<BR>
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<P><EM>> My (Relisys) Scanner has fixed passive
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</EM><BR>
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<EM>> termination behind it's nonstandard 25 pin SCSI socket.
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</EM><BR>
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<P>Despite it's willingness to resume it's normal duties, I opened up the scanner
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<BR>
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casing. Could not find a hint of termination in mij Mustek ScanExpress
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<BR>
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12000SE, but that's me being blind to electronics. I'd like to remove the PCB
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<BR>
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to scan it, but... :-D
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<BR>
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Let me state again that an active terminator on my Mustek wreaks havoc on
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<BR>
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scanned images - which contradicts the Mustek backend homepage, but I
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<BR>
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speak for my scanner only.
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<BR>
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<P><EM>> does *not* do any sort of auto termination (I don't believe that any
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</EM><BR>
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<EM>> 810 *does*, but don't quote me).
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</EM><BR>
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<P>I think I read somewhere that certain ICs exist which implement active
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<BR>
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termination. These chips can be used by manufacturers in SCSI devices.
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<BR>
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Maybe there are auto-terminating chips too?
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<BR>
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<P><EM>> May I recommend the "SCSI FAQ" and the no longer maintained
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</EM><BR>
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<EM>> "Linux SCSI HOWTO" as two valuable sources of information
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</EM><BR>
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<EM>> about SCSI in practice.
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</EM><BR>
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<P>Very recommendable sources of information, but they say little on how [fill in
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<BR>
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your favorite scanner-brand here] implemented SCSI. I for one have never
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<BR>
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been able to attach my Mustek to a SCSI chain with more than just a SCSI
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<BR>
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adapter. And I have tried a few adapters and devices.
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<BR>
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YMMV of course.
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<BR>
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<P>cheers
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<BR>
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<P>Ferenc
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<BR>
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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<LI><STRONG>Next message:</STRONG> <A HREF="0257.html">Kees Lemmens: "Fwd: Some little quirks in Epson Perfection 610 (epson backend)"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0255.html">Henning Meier-Geinitz: "Re: scanimage hangs on 'scanimage -L'"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0243.html">Mark Plowman: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0236.html">Henning Meier-Geinitz: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Mon Jan 22 2001 - 13:52:11 PST</EM>
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