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