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<!-- received="Mon Sep 14 12:21:14 1998 PDT" -->
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<!-- sent="Mon, 14 Sep 1998 20:17:07 +0100" -->
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<!-- name="Jonathan Buzzard" -->
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<!-- email="jab@hex.prestel.co.uk" -->
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<!-- subject="Re: UMAX 610P and (in)SANE" -->
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<!-- id="m0zIe7X-0002YPC@hex" -->
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<!-- inreplyto="UMAX 610P and (in)SANE" -->
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<title>sane-devel: Re: UMAX 610P and (in)SANE</title>
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<h1>Re: UMAX 610P and (in)SANE</h1>
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<b>Jonathan Buzzard</b> (<a href="mailto:jab@hex.prestel.co.uk"><i>jab@hex.prestel.co.uk</i></a>)<br>
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<i>Mon, 14 Sep 1998 20:17:07 +0100</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#100">[ date ]</a><a href="index.html#100">[ thread ]</a><a href="subject.html#100">[ subject ]</a><a href="author.html#100">[ author ]</a>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0101.html">Oliver Rauch: "Re: UMAX 610P and (in)SANE"</a>
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<li> <b>Previous message:</b> <a href="0099.html">Kevin Charter: "Re: Little problem with Agfa SnapScan"</a>
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<li> <b>Maybe in reply to:</b> <a href="0077.html">Roy-Anders Larsen: "UMAX 610P and (in)SANE"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0101.html">Oliver Rauch: "Re: UMAX 610P and (in)SANE"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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<a href="mailto:royalarsen@yahoo.com">royalarsen@yahoo.com</a> said:<br>
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<i>> Of course on the 'official' SANE web pages, it is stated that there </i><br>
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<i>> is no support for UMAX parallel port scanners. Then I find some </i><br>
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<i>> messages that some people are trying to make a backend themselves. </i><br>
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<p>
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That would have been me.<br>
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<p>
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<p>
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<i>> Then I find some messages (www.dejanews.com) that some people state </i><br>
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<i>> that the UMAX parallel port scanners are supported by SANE (???). </i><br>
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<p>
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I very much doubt that they are correct.<br>
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<p>
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<p>
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<i>> Of course, I should probably believe the official pages, and not the </i><br>
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<i>> messages individuals send, but since I have an Astra 610P and I need </i><br>
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<i>> to use it with linux, I choose to be optimistic. </i><br>
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<p>
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You choose wrong.<br>
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<p>
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<p>
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UMAX have repeatedly refused to give me the necessary programming<br>
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information for the parallel port protocol The reason given to me was<br>
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that the only documentation on the parallel port protocol is combined<br>
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with the documentation on the design of the ASIC. Umax are under the<br>
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delusional belief that their ASIC is something special and the design<br>
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needs to be protected. Why anyone would want to copy a design that only<br>
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uses only SPP and EPP modes (that's right no PS/2 or ECP) is beyond me.<br>
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There was also some suggestion that the ASIC design may have been licesened<br>
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to other scanner manufacturers (more fool them).<br>
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<p>
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The scanner can be used in a limited extent under Wine, and should not be<br>
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too hard to reverse engineer. There are only seven routines in the driver<br>
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that do any sort of communication with the scanner and I had little trouble<br>
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working out the SPP ones (there are 14 in reality 7 SPP and 7 corresponding<br>
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EPP ones). It is just a case of understanding these and putting them<br>
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back together.<br>
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<p>
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I was this time last year working on reverse engineering this protocol,<br>
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however this work has been indefinately suspended since the begining of<br>
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February this year. The reason being that whilst working on reverse<br>
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engineering the protocol I had a flash of inspiration that lead me to<br>
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workout a much longer term reverse engineering project I have had, namely<br>
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being able to set the battery saving options on Toshiba laptops (ie. a<br>
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Linux port of MaxTime).<br>
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<p>
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This has progressed to the point now where there are three laptops in<br>
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transit from Toshiba Germany to me as I type this, for testing purposes.<br>
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When I have finished with these I can return them and get some more etc.<br>
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This is likely to keep me busy indefinately, and because of this I am<br>
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likely to flog my scanner on to a friend who uses Windows and get a<br>
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different scanner that does work under Linux (anyone tried getting the<br>
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docs for the HP 4100 USB scanner?).<br>
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<p>
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<p>
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JAB.<br>
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<p>
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<p>
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<pre>
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--
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Jonathan A. Buzzard Email: <a href="mailto:jab@hex.prestel.co.uk">jab@hex.prestel.co.uk</a>
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Northumberland, United Kingdom. Tel: +44(0)1661-832195
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<p>
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<p>
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<p>
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<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">majordomo@mostang.com</a>
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0101.html">Oliver Rauch: "Re: UMAX 610P and (in)SANE"</a>
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<li> <b>Previous message:</b> <a href="0099.html">Kevin Charter: "Re: Little problem with Agfa SnapScan"</a>
|
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<li> <b>Maybe in reply to:</b> <a href="0077.html">Roy-Anders Larsen: "UMAX 610P and (in)SANE"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0101.html">Oliver Rauch: "Re: UMAX 610P and (in)SANE"</a>
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<!-- reply="end" -->
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</ul>
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