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<!-- received="Wed Nov 18 21:02:29 1998 PST" -->
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<!-- sent="Mon, 16 Nov 1998 06:45:21 +0800" -->
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<!-- name="David Campbell" -->
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<!-- email="campbell@torque.net" -->
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<!-- subject="Re: Scanner question" -->
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<!-- id="199811152244.RAA20135@gear.torque.net" -->
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<!-- inreplyto="Scanner question" -->
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<title>sane-devel: Re: Scanner question</title>
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<h1>Re: Scanner question</h1>
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<b>David Campbell</b> (<a href="mailto:campbell@torque.net"><i>campbell@torque.net</i></a>)<br>
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<i>Mon, 16 Nov 1998 06:45:21 +0800</i>
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<p>
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<ul>
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<li> <b>Next message:</b> <a href="0146.html">Anthony Rumble: "StudioScan II Si"</a>
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<li> <b>Previous message:</b> <a href="0144.html">David Huggins-Daines: "[ANNOUNCE] New backend for Abaton scanners"</a>
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Date sent: Sun, 15 Nov 1998 12:02:29 -0800<br>
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From: Justin Young <<a href="mailto:justiny@newsguy.com">justiny@newsguy.com</a>><br>
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To: <a href="mailto:linux-parport@torque.net">linux-parport@torque.net</a><br>
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Subject: [PARPORT] Scanner question<br>
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<p>
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<i>> I apologize if this is an FAQ. I'm new to the list and didn't see it</i><br>
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<i>> mentioned on the Linux PPHP.</i><br>
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<i>> </i><br>
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<i>> Is anyone working on (or maybe has completed) a way to handle parallel</i><br>
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<i>> port scanners? I'm probably missing something. However, it seems silly</i><br>
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<i>> to ignore the fact that these things can be had for less than $30</i><br>
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<i>> sometimes and produce pictures almost or sometimes equal to that of the</i><br>
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<i>> more expensive SCSI scanners. (Granted, your computer locks up while</i><br>
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<i>> it's in use. However, that's a small price!)</i><br>
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<p>
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There has been some attempts to deal with parallel port scanners. These <br>
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can be broken down into two main catagories:<br>
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<p>
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a) SCSI internal + parallel to SCSI convertor<br>
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(HP 5110C has an imbedded ShuttleTech parallel to SCSI convertor)<br>
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b) Custom parallel port protocol<br>
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<p>
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For case "a" it is a matter of constructing the relevant parallel port SCSI <br>
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interface driver. There are a couple of "alpha/beta" drivers for the <br>
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Trantor/Adaptec range. The ShuttleTech driver is "in the works" I believe (I <br>
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am not working on it personally). The advantage of SCSI scanners is that the <br>
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bulk of the protocol is standard (PTL - appologies to the atheists).<br>
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<p>
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For case "b" it becomes a matter of untaggling the threads from a port trace, <br>
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to give you some idea of the complexity it is equivalent to trying to untangle <br>
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a bowl of spagetti. No-one has succesfully managed to complete a case "b" <br>
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driver yet from memory. (If someone has, please let me know)<br>
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<p>
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Better still check the SANE homepage for more details: <br>
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<a href="http://www.mostang.com/sane">http://www.mostang.com/sane</a><br>
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<p>
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SANE also has a mailing list for scanner specific questions.<br>
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<p>
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David Campbell<br>
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=======================================================<br>
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<a href="mailto:campbell@torque.net">campbell@torque.net</a><br>
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<p>
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Check <a href="http://www.torque.net/parport">http://www.torque.net/parport</a> for all Linux<br>
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parallel port solutions.<br>
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<p>
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Current project list:<br>
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a) Maintain Linux ZIP drivers (need to update docs)<br>
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b) Get to the bottom of rumors of a third ZIP interface<br>
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c) Create Linux chipset specific parport drivers<br>
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<p>
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Any assistance to clearing this list most welcome<br>
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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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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0146.html">Anthony Rumble: "StudioScan II Si"</a>
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<li> <b>Previous message:</b> <a href="0144.html">David Huggins-Daines: "[ANNOUNCE] New backend for Abaton scanners"</a>
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