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<H1>Re: Re: Problems with Acer ScanPrisa 640S</H1>
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<STRONG>From:</STRONG> <A HREF="mailto:cbagwell@sprynet.com?Subject=Re:%20Re:%20Problems%20with%20Acer%20ScanPrisa%20640S&In-Reply-To=&lt;Springmail.105.972008393.0.08070700@www.springmail.com&gt;"><EM>cbagwell@sprynet.com</EM></A><BR>
<STRONG>Date:</STRONG> Thu Oct 19 2000 - 19:19:53 PDT
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<A HREF="mailto:sane-devel@mostang.com?Subject=Re:%20Re:%20Problems%20with%20Acer%20ScanPrisa%20640S&In-Reply-To=&lt;Springmail.105.972008393.0.08070700@www.springmail.com&gt;">sane-devel@mostang.com</A> wrote:
<BR>
<EM>&gt; &gt; Hi,
</EM><BR>
<EM>&gt; <A HREF="mailto:cbagwell@sprynet.com?Subject=Re:%20Re:%20Problems%20with%20Acer%20ScanPrisa%20640S&In-Reply-To=&lt;Springmail.105.972008393.0.08070700@www.springmail.com&gt;">cbagwell@sprynet.com</A> wrote:
</EM><BR>
<P><EM>&gt; &gt; I have a Acer 640BU Scanner which is USB. I've noticed a few &gt; problems
</EM><BR>
<EM>&gt; &gt; with the sane-1.0.3 backend (using some USB patches). Most of them
</EM><BR>
<EM>&gt; &gt; are lockup related.
</EM><BR>
<EM>&gt; &gt;
</EM><BR>
<EM>&gt; &gt; I have better luck with the version of sane-1.0.1. You might &gt; download
</EM><BR>
<EM>&gt; &gt; it and try it out.
</EM><BR>
<P><EM>&gt; Is that really helpful? The 1.0.1 backend is very different from the &gt; 1.0.3 -
</EM><BR>
<EM>&gt; a major rewrite, in fact. The 1.0.3 backend is clearly the future &gt; (it wasn't
</EM><BR>
<EM>&gt; rewritten without good reason), so why not concentrate on improving &gt; that, and
</EM><BR>
<EM>&gt; leave the old versions behind. Multiple versions not only dissipate
</EM><BR>
<EM>&gt; development effort, but encouraging people to try them will just &gt; reduce
</EM><BR>
<EM>&gt; feedback on the most interesting version - the latest.
</EM><BR>
<P><EM>&gt; Regards,
</EM><BR>
<EM>&gt; Steve
</EM><BR>
<P>Yeah, its far from an ideal solution. But it does have two things
<BR>
&nbsp;going for it. 1) It may keep people from having a 8 1/2 x 11 paper
<BR>
&nbsp;weight on their desk if sane-1.0.3 snapscan driver doesn't work for
<BR>
&nbsp;them. (ie. like me) 2) Since I have been unable to come up with docs
<BR>
&nbsp;on the main controlling ASIC of the scanner its very useful to
<BR>
&nbsp;compare working code with none working code.
<BR>
<P>I do plan to help debug these lockups and push the latest drivers as
<BR>
&nbsp;the solution but in the mean time I do have the occasional scans that
<BR>
&nbsp;I would like to perform and so far only sane-1.0.1 works reliably
<BR>
for me.
<BR>
<P>Here is a dumb question. Anyone have docs on any of the compatible
<BR>
&nbsp;scanners? I sent an email to Acer supported which appears to have
<BR>
&nbsp;gone to the standard /dev/null. I attempted to find an AFGA contact
<BR>
&nbsp;but was unable to from their web page. There is public docs on the
<BR>
&nbsp;Analog Devices AD9822 scanner chip that my Acer 640BU uses but the
<BR>
&nbsp;main ASIC is labeled as &quot;AP7107U&quot; and I'm unable to find anything on
<BR>
&nbsp;on it.
<BR>
<P>Chris
<BR>
<P><PRE>
--
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