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70 wiersze
3.4 KiB
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<!-- received="Mon Sep 29 17:27:16 1997 MST" -->
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<!-- sent="Tue, 30 Sep 1997 01:09:33 +0200 (MET DST)" -->
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<!-- name="Rogier Wolff" -->
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<!-- email="R.E.Wolff@BitWizard.nl" -->
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<!-- subject="Re: success: Mustek 1200SP, firmware 1.02" -->
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<!-- id="199709292309.BAA04246@cave.BitWizard.nl" -->
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<!-- inreplyto="342FD27D.13A8C819@t-online.de" -->
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<title>sane-devel: Re: success: Mustek 1200SP, firmware 1.02</title>
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<h1>Re: success: Mustek 1200SP, firmware 1.02</h1>
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<b>Rogier Wolff</b> (<a href="mailto:R.E.Wolff@BitWizard.nl"><i>R.E.Wolff@BitWizard.nl</i></a>)<br>
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<i>Tue, 30 Sep 1997 01:09:33 +0200 (MET DST)</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#18">[ date ]</a><a href="index.html#18">[ thread ]</a><a href="subject.html#18">[ subject ]</a><a href="author.html#18">[ author ]</a>
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<li> <b>Next message:</b> <a href="0019.html">becka@sunserver1.rz.uni-duesseldorf.de: "Re: Mustek 600 II EP"</a>
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<li> <b>Previous message:</b> <a href="0017.html">Matto Marjanovic: "Re: Most SANE scanner to buy?"</a>
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</ul>
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<!-- body="start" -->
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Nils Schuller wrote:<br>
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<i>> </i><br>
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<i>> A question to those who have the backround and could do this: Would it</i><br>
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<i>> be possible to have some sort of dynamic allocation of BIG_BUFF-space at</i><br>
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<i>> runtime? This would make much sense for scanning: depending on the size</i><br>
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<i>> of a scan the program would request the needed amount?</i><br>
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<i>> I have no idea, if the kernel supports things like that, or if it would</i><br>
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<i>> be too hard to do that?</i><br>
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<p>
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There is not much the kernel can do dynamically with this: You need<br>
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contiguous physical memmory (until the IO system gets a complete<br>
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overhaul as Larry Mcvoy is propagating). <br>
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<p>
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<commercial plug> I'm in the business of writing Linux device drivers,<br>
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and I can handle a new assignment any time now :-) Anybody know a<br>
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device driver that needs writing fast? </commercial plug><br>
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<p>
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The upside of this is that I have I'll write up a patch tomorrow that<br>
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allows several different subsystems to allocate memory from a single <br>
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buffer that is allocated at boot time. <br>
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<p>
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For example a video grabber would need a big contiguous physical<br>
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buffer, just like "sg". Using my big buffer patch, you would be able<br>
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to share that buffer between these two "users". <br>
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<p>
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Roger.<br>
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<p>
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<pre>
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--
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** <a href="mailto:R.E.Wolff@BitWizard.nl">R.E.Wolff@BitWizard.nl</a> ** +31-15-2137555 ** <a href="http://www.BitWizard.nl/">http://www.BitWizard.nl/</a> **
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Florida -- A 39 year old construction worker woke up this morning when a
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109-car freight train drove over him. According to the police the man was
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drunk. The man himself claims he slipped while walking the dog. 080897
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<p>
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<pre>
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--
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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="0019.html">becka@sunserver1.rz.uni-duesseldorf.de: "Re: Mustek 600 II EP"</a>
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<li> <b>Previous message:</b> <a href="0017.html">Matto Marjanovic: "Re: Most SANE scanner to buy?"</a>
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