sane-project-website/old-archive/1998-07/0052.html

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<!-- received="Wed Jul 15 08:37:44 1998 PDT" -->
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<!-- name="Matto Marjanovic" -->
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<!-- subject="Re: SCSI-II scanner command list - specification file - common lib" -->
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<title>sane-devel: Re: SCSI-II scanner command list - specification file - common lib</title>
<h1>Re: SCSI-II scanner command list - specification file - common lib</h1>
<b>Matto Marjanovic</b> (<a href="mailto:maddog@mir.com"><i>maddog@mir.com</i></a>)<br>
<i>Wed, 15 Jul 1998 11:37:17 -0400 (EWT)</i>
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<li> <b>Next message:</b> <a href="0053.html">Michael K. Johnson: "Re: SCSI-II scanner command list - specification file - common lib"</a>
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<i> &gt;Why don't we have a common library for all SCSI-II scanners and have</i><br>
<i> &gt;scanner dependent command list in a specifications file (text/ plain ASCII</i><br>
<i> &gt;file) ? </i><br>
<p>
This question has been asked a number of times before (by me, among<br>
others), and usual answer is that the SCSI-II specs for scanners is<br>
far too vague (and open to mfg-to-mfg variation) to make a common<br>
library useful.<br>
<p>
<i> &gt;This helps in adding new SCSI-II scanners by changing only the</i><br>
<i> &gt;specifications file (provided you get your hand on the Scanner SPECs).</i><br>
<i> &gt;This truly helps when we have latest scanners from the same manufacturer.</i><br>
<p>
If you have a new model from an old manufacturer, chances are the<br>
command set is about the same, and the old backend just needs some<br>
tweaks. Much easier to do. (And, I think, what gets done implicitly<br>
by many backends --- adjusting what they send to the scanner depending<br>
on what particular model is used.)<br>
<p>
-matt m.<br>
<p>
<p>
<p>
<pre>
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<li> <b>Next message:</b> <a href="0053.html">Michael K. Johnson: "Re: SCSI-II scanner command list - specification file - common lib"</a>
<li> <b>Previous message:</b> <a href="0051.html">Sreenivasa Sista: "SCSI-II scanner command list - specification file - common lib"</a>
<li> <b>Maybe in reply to:</b> <a href="0051.html">Sreenivasa Sista: "SCSI-II scanner command list - specification file - common lib"</a>
<!-- nextthread="start" -->
<li> <b>Next in thread:</b> <a href="0053.html">Michael K. Johnson: "Re: SCSI-II scanner command list - specification file - common lib"</a>
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