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100 wiersze
4.6 KiB
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<!-- received="Wed Dec 29 12:49:23 1999 PST" -->
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<!-- sent="Wed, 29 Dec 1999 12:54:11 -0800" -->
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<!-- name="Adrian Perez Jorge" -->
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<!-- email="adrianpj@easynews.com" -->
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<!-- subject="Re: Volunteer for back end development - excellent info in this msg" -->
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<!-- id="199912292054.MAA04066@mail2.bigmailbox.com" -->
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<!-- inreplyto="Volunteer for back end development - excellent info in this msg" -->
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<title>sane-devel: Re: Volunteer for back end development - excellent info in this msg</title>
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<h1>Re: Volunteer for back end development - excellent info in this msg</h1>
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<b>Adrian Perez Jorge</b> (<a href="mailto:adrianpj@easynews.com"><i>adrianpj@easynews.com</i></a>)<br>
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<i>Wed, 29 Dec 1999 12:54:11 -0800</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#195">[ date ]</a><a href="index.html#195">[ thread ]</a><a href="subject.html#195">[ subject ]</a><a href="author.html#195">[ author ]</a>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0196.html">Bill Wohler: "Re: Minolta development commences"</a>
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<li> <b>Previous message:</b> <a href="0194.html">Jochen Eisinger: "Re: Mustek ScanExpress 12000P"</a>
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<li> <b>Maybe in reply to:</b> <a href="0079.html">David E. Nelson: "Volunteer for back end development - excellent info in this msg"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0207.html">Hermang: "parallel port reverse engneering?"</a>
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<li> <b>Reply:</b> <a href="0207.html">Hermang: "parallel port reverse engneering?"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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<i>>Date: Tue, 28 Dec 1999 16:36:45 -0600 (CST)</i><br>
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<i>>From: "David E. Nelson" </i><br>
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<<a href="mailto:dnelson@jump.net">dnelson@jump.net</a>><br>
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<i>></i><br>
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<i>>I think that when the 4200 is plugged in, the device driver should take it</i><br>
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<i>>out of transparency mode (if the above works w/ regards to taking it out</i><br>
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<i>>of xparency mode). The only difference between the 9830 and 9831 is the</i><br>
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<i>>interface method so the backend should not care. If a backend were to be</i><br>
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<i>>developed, this difference should be hidden, don't you think?</i><br>
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<i>></i><br>
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<i>>Regards,</i><br>
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<i>> /\/elson</i><br>
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<p>
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But 9830 and 9831 differs not only in the interface method. The<br>
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latest includes new (some) features, but of course, they are similiar<br>
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enought to make a single backend. Maybe the backend should have some<br>
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option that tells what chipset is being used to take advantage of the<br>
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new features (automatic detection?).<br>
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<p>
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About transparency mode, yes I think it's a good idea to switch<br>
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off transparency mode at device driver level.<br>
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<p>
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Well, I forgot it in my last e-mail; here is the initialization table<br>
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I mention:<br>
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<p>
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registers initialization value<br>
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<p>
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08-0F 02 1A 00 0A 60 2F 13 06<br>
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10-17 17 01 03 03 05 00 00 0B<br>
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18-1F 00 00 00 00 0D 21 00 40<br>
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20-27 15 18 00 40 02 98 00 00<br>
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28-2F 00 01 00 00 3F FF 00 01<br>
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30-37 00 00 00 00 00 20 00 30<br>
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38-3F 25 25 24 28 24 28 00 00<br>
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40-47 00 00 06 1D 00 13 05 48<br>
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48-4F 01 C2 00 00 00 00 5E 02<br>
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50-57 00 15 00 45 00 10 08 17<br>
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58-5F 2B 90 00 00 01 00 80 00<br>
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<p>
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<p>
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At least those registers are modified by the driver:<br>
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<p>
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1E, 1F<br>
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22-25<br>
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42 : operation is an ``and 0xfe''<br>
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59 : operations are ``and 0x7f'' (ResetPushButton() function)<br>
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``or 0x80'' (ResetPushButton() function)<br>
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``or 0x90'' (InitialButton() function)<br>
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<p>
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<p>
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<p>
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<p>
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Adrian Perez Jorge<br>
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<<a href="mailto:adrianpj@easynews.com">adrianpj@easynews.com</a>><br>
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<p>
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------------------------------------------------------------<br>
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Free Web space and web based email @EASYNEWS.COM<br>
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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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</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="0196.html">Bill Wohler: "Re: Minolta development commences"</a>
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<li> <b>Previous message:</b> <a href="0194.html">Jochen Eisinger: "Re: Mustek ScanExpress 12000P"</a>
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<li> <b>Maybe in reply to:</b> <a href="0079.html">David E. Nelson: "Volunteer for back end development - excellent info in this msg"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0207.html">Hermang: "parallel port reverse engneering?"</a>
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<li> <b>Reply:</b> <a href="0207.html">Hermang: "parallel port reverse engneering?"</a>
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<!-- reply="end" -->
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</ul>
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