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<TITLE>sane-devel: Re: Parallel Scanners (UMAX Astra 1220P)</TITLE>
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<META NAME="Author" CONTENT="Michael Franz (mvfranz@hotmail.com)">
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<META NAME="Subject" CONTENT="Re: Parallel Scanners (UMAX Astra 1220P)">
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<H1>Re: Parallel Scanners (UMAX Astra 1220P)</H1>
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<!-- received="Thu Jun 8 05:55:42 2000" -->
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<STRONG>From:</STRONG> Michael Franz (<A HREF="mailto:mvfranz@hotmail.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>"><EM>mvfranz@hotmail.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Jun 08 2000 - 05:57:03 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0063.html">abel deuring: "Re: Problems with sane-scsi"</A>
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<LI><STRONG>Maybe in reply to:</STRONG> <A HREF="0055.html">Michael Franz: "Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0076.html">Jerome Hettich: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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Assuming that I did have the specifications (which I don't) where would I
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start?
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<BR>
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<P><EM>>From: Doug Alcorn <<A HREF="mailto:doug@lathi.net?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">doug@lathi.net</A>>
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</EM><BR>
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<EM>>Reply-To: <A HREF="mailto:sane-devel@mostang.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">sane-devel@mostang.com</A>
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</EM><BR>
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<EM>>To: <A HREF="mailto:sane-devel@mostang.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">sane-devel@mostang.com</A>
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</EM><BR>
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<EM>>Subject: Re: Parallel Scanners (UMAX Astra 1220P)
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</EM><BR>
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<EM>>Date: 07 Jun 2000 10:14:37 -0400
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>"Michael Franz" <<A HREF="mailto:mvfranz@hotmail.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">mvfranz@hotmail.com</A>> writes:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> > It seems that only the epson and mustek scanners are supported
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</EM><BR>
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<EM>> > either directly or by treating the scanner as a SCSI device. How do
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</EM><BR>
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<EM>> > I get started with the UMAX scanners?
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>There are two pieces to using a scanner in Linux. First, the kernel
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</EM><BR>
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<EM>>must be able to communicate with the device. This is rarely a
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</EM><BR>
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<EM>>problem; even with USB scanners. The real problem comes with what
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</EM><BR>
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<EM>>sane calls the "backend". This is the piece that goes between the
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</EM><BR>
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<EM>>actual scanning user interface and the kernel itself. The backend
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</EM><BR>
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<EM>>must know how to control the scanner. This is different than just
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</EM><BR>
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<EM>>talking to the scanner.
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</EM><BR>
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<P>O.K. How do I do this? I have tried the load module method, but since the
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<BR>
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UMAX is not supported I don't know if I was on the right path. I tried
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<BR>
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parport, ppSCSI, ppa,...
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<BR>
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<P><EM>>
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</EM><BR>
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<EM>>Here's the bad news: UMAX doesn't release the command protocol for
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</EM><BR>
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<EM>>controlling their parallel or USB scanners. I have the UMAX 2000U
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</EM><BR>
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<EM>>scanner. The developement kernels (2.3.x) can recognize the scanner,
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</EM><BR>
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<EM>>but sane has no idea what to say to it.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>You have two options. First, write a polite letter to UMAX requesting
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</EM><BR>
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<EM>>the scanner control information. This is probably a dead end. I have
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</EM><BR>
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<EM>>been doing this every so often for the last six months. The second is
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</EM><BR>
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<EM>>to reverse engineer the command language. I don't really know how to
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</EM><BR>
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<EM>>do this. I guess you would have to tap into the line (either USB or
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</EM><BR>
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<EM>>parallel cable) and sniff out what commands are sent under what
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</EM><BR>
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<EM>>situations. I think this would be very usefull (to me at least) but
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</EM><BR>
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<EM>>very difficult. Someone much smarter than me can comment on this.
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</EM><BR>
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<P>I tried to do this briefly, but the program I was using did seem to give me
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<BR>
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enough information. It told me that I was sending unsigned longs to the
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<BR>
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port, but not the value. The next thing I was going to try was to look at
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<BR>
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the actual drivers and see if they left anything in them.
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<BR>
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<P>Any one have any tips on this? A good snooping program?
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<BR>
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<P><P><EM>>--
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</EM><BR>
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<EM>>Doug Alcorn | Fire Todd Dickinson, reform the US Patent Office
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</EM><BR>
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<EM>><A HREF="mailto:doug@lathi.net?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">doug@lathi.net</A> | <A HREF="http://www.andovernews.com/cgi-bin/news_column.pl?533">http://www.andovernews.com/cgi-bin/news_column.pl?533</A>
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</EM><BR>
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<EM>>www.lathi.net |
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>--
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</EM><BR>
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<EM>>Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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</EM><BR>
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<EM>>To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">majordomo@mostang.com</A>
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</EM><BR>
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<P>Michael
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<BR>
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________________________________________________________________________
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<BR>
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Get Your Private, Free E-mail from MSN Hotmail at <A HREF="http://www.hotmail.com">http://www.hotmail.com</A>
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<BR>
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<P><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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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Parallel%20Scanners%20(UMAX%20Astra%201220P)&In-Reply-To=<20000608125703.96007.qmail@hotmail.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0063.html">abel deuring: "Re: Problems with sane-scsi"</A>
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<LI><STRONG>Maybe in reply to:</STRONG> <A HREF="0055.html">Michael Franz: "Parallel Scanners (UMAX Astra 1220P)"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0065.html">Jaeger, Gerhard: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0076.html">Jerome Hettich: "Re: Parallel Scanners (UMAX Astra 1220P)"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Thu Jun 08 2000 - 05:56:28 PDT</EM>
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