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<TITLE>sane-devel: Re: How to support a scanner without documentation</TITLE>
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<META NAME="Author" CONTENT="Nathan Stenzel (nathanjs@csj.net)">
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<META NAME="Subject" CONTENT="Re: How to support a scanner without documentation">
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<H1>Re: How to support a scanner without documentation</H1>
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<!-- received="Thu Jun 22 16:09:22 2000" -->
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<!-- sent="Thu, 22 Jun 2000 18:18:27 -0500" -->
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<!-- name="Nathan Stenzel" -->
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<!-- subject="Re: How to support a scanner without documentation" -->
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<STRONG>From:</STRONG> Nathan Stenzel (<A HREF="mailto:nathanjs@csj.net?Subject=Re:%20How%20to%20support%20a%20scanner%20without%20documentation&In-Reply-To=<39529EC3.C642B9FC@csj.net>"><EM>nathanjs@csj.net</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Jun 22 2000 - 16:18:27 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0168.html">Petter Reinholdtsen: "Re: Towards release 1.0.3?"</A>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0166.html">Henning Meier-Geinitz: "Re: Agfa Snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0164.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0170.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0170.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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<P>
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Wow!
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<BR>
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If I send you a copy of my scanner driver disk, could you do that with it?
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<BR>
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I have a Mustek GC6000 handheld scanner and a Plustek 4800P flatbed scanner.
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<BR>
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I would greatly appreciate it if the the other sane-devel guys had that code!
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<BR>
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<P>I can't even seem to compile the scanner code that I am supposed to be testing.
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<BR>
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ha ha ha
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<BR>
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<P>Jochen Eisinger wrote:
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<BR>
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<P><EM>> Hi,
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</EM><BR>
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<EM>> >
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</EM><BR>
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<EM>> > 5) Disassembling the Windows driver: I have never done this, other people
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</EM><BR>
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<EM>> > on this list may talk about this. I think it's a lot of work and needs
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</EM><BR>
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<EM>> > good understatement of assembler and the windows API.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I've done this with a Mustek PP driver...
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> There are several files in the windows/twain/a4s2/ directory. The only
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</EM><BR>
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<EM>> interesting file was scanobj.dll: this file calls a a4sii300.386 (VxD).
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</EM><BR>
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<EM>> scanobj.dll is quite easy to read, there are several functions like
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</EM><BR>
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<EM>> PowerOn/Off, GetDeviceInfo, Start/StopScan, GetImage, SetParameters,
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</EM><BR>
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<EM>> etc... I used this information for a) figuring out what parameters the
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</EM><BR>
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<EM>> vxd driver needs and b) what vxd function no is supposed to do. Next I
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</EM><BR>
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<EM>> disassembled the vxd and translated the assembler code to C code which
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</EM><BR>
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<EM>> is quite straight forward. Now comes the difficult part. You have to
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</EM><BR>
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<EM>> replace names like sub9CF or var65535_word with names like lock_port and
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</EM><BR>
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<EM>> image_width. This is quite difficult, but it's possible. Now you have
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</EM><BR>
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<EM>> the sources of a working scanner driver...
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> -- jochen
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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:%20How%20to%20support%20a%20scanner%20without%20documentation&In-Reply-To=<39529EC3.C642B9FC@csj.net>">majordomo@mostang.com</A>
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</EM><BR>
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<P><P> Robert Morris College
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<BR>
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For Information
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<BR>
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Visit Us: <A HREF="http://www.rmcil.edu">http://www.rmcil.edu</A>
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<BR>
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Or Email us: <A HREF="mailto:enroll@smtp.rmcil.edu?Subject=Re:%20How%20to%20support%20a%20scanner%20without%20documentation&In-Reply-To=<39529EC3.C642B9FC@csj.net>">enroll@smtp.rmcil.edu</A>
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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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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20How%20to%20support%20a%20scanner%20without%20documentation&In-Reply-To=<39529EC3.C642B9FC@csj.net>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0168.html">Petter Reinholdtsen: "Re: Towards release 1.0.3?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0166.html">Henning Meier-Geinitz: "Re: Agfa Snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0164.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0170.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0170.html">Jochen Eisinger: "Re: How to support a scanner without documentation"</A>
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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 22 2000 - 16:13:31 PDT</EM>
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