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<TITLE>sane-devel: Acer 640U, re: Christian and Sebastien's suggestions</TITLE>
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<META NAME="Author" CONTENT="Shea Martin (snowsquirrel@home.com)">
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<META NAME="Subject" CONTENT="Acer 640U, re: Christian and Sebastien's suggestions">
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<H1>Acer 640U, re: Christian and Sebastien's suggestions</H1>
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<!-- received="Thu Feb 8 11:39:14 2001" -->
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<!-- name="Shea Martin" -->
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<!-- subject="Acer 640U, re: Christian and Sebastien's suggestions" -->
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<!-- id="20010208135428.09d92b06.snowsquirrel@home.com" -->
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<STRONG>From:</STRONG> Shea Martin (<A HREF="mailto:snowsquirrel@home.com?Subject=Re:%20Acer%20640U,%20re:%20Christian%20and%20Sebastien's%20suggestions&In-Reply-To=<20010208135428.09d92b06.snowsquirrel@home.com>"><EM>snowsquirrel@home.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Feb 08 2001 - 11:54:28 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0085.html">Oliver Rauch: "Re: Preview problems on Solaris Sparc"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0083.html">Oliver Rauch: "Re: Solaris works! New problem."</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0092.html">Sebastien Sable: "Re: Acer 640U, re: Christian and Sebastien's suggestions"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0092.html">Sebastien Sable: "Re: Acer 640U, re: Christian and Sebastien's suggestions"</A>
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<HR NOSHADE><P>
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<!-- body="start" -->
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<P>
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Christion wrote:
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<BR>
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<quote>
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<BR>
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uncomment the lines (in the routine sane_start)
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<BR>
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status = measure_transfer_rate(pss);
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<BR>
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CHECK_STATUS (status, me, "measure_transfer_rate");
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<BR>
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</quote>
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<BR>
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<P>I had a look, and the snapscan source form snapscan.sourceforge already does this.
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<BR>
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<P>Sebastion wrote:
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<BR>
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<quote>
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<BR>
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There are a few lines in snapscan-source.c in the new snapscan which
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<BR>
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look like this:
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<BR>
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<P>if(ps->pss->pdev->model == ACER300F
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<BR>
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||
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<BR>
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ps->pss->pdev->model == SNAPSCAN310
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<BR>
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||
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<BR>
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ps->pss->pdev->model == SNAPSCAN1236S
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<BR>
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||
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<BR>
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ps->pss->pdev->model == VUEGO310S
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<BR>
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||
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<BR>
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ps->pss->pdev->model == VUEGO610S)
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<BR>
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{
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<BR>
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ps->pss->expected_read_bytes = (size_t) ps->absolute_max;
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<BR>
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}
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<BR>
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<P>Could you try to add your model in the if test (or just put your model
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<BR>
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instead of another one). Then recompile. It corrected a problem rather
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<BR>
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similar for other models.
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<BR>
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<P>If this is not enough, there are a few other places in snapscan code
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<BR>
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with the same kind of test. You may try to do the same modification
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<BR>
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there too.
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<BR>
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</quote>
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<BR>
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<P>I found a few ok, added or == PRISA620S. Recompile, no better. Went through all source looking for places where models are used to distinguished between. I added 'and PRISA620S' to snapscan-scsi.c. Recompiled again. No difference really.
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<BR>
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<P>Here is the last bit of output (if you need more, let me know) after editing snapscan-source.c, and before I touched snapscan-scsi.c.
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<BR>
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<P><output>
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<BR>
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...
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<BR>
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[snapscan] usb_read: reading: 0xfb 0x00 0x00 0x00 0x00 0x00 0x00 0x00
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<BR>
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[snapscan] sane_snapscan_read (0x80504c0, 0xbfff764c, 32768, 0xbfff7618)
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<BR>
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[snapscan] scsi_read
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<BR>
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[snapscan] snapscan_cmd
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<BR>
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[snapscan] sanei_usb_cmd(5,0x80504f8,10,0x80505f8,0x8058200 (30480))
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<BR>
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[snapscan] atomic_usb_cmd(5,0x80504f8,10,0x80505f8,0x8058200 (30480))
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<BR>
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[snapscan] usb_cmd(5,0x80504f8,10,0x80505f8,0x8058200 (30480))
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<BR>
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[snapscan] usb_cmd: cmdlen=10, datalen=0
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<BR>
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[snapscan] usb_write: writing: 0x28 0x00 0x00 0x00 0x00 0x00 0x00 0x77 0x10 0x0 0
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<BR>
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[snapscan] usb_read: reading: 0xf9 0x00 0x00 0x00 0x00 0x00 0x00 0x00
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<BR>
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[snapscan] usb_read Only 26448 bytes read
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<BR>
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[snapscan] scsi_read: snapscan_cmd command failed: Error during device I/O
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<BR>
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scanimage: sane_read: Error during device I/O
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<BR>
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[snapscan] sane_snapscan_close (0x80504c0)
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<BR>
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[snapscan] release_unit
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<BR>
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[snapscan] snapscan_cmd
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<BR>
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[snapscan] sanei_usb_cmd(5,0xbffff594,6,0x0,0x0 (0))
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<BR>
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[snapscan] atomic_usb_cmd(5,0xbffff594,6,0x0,0x0 (0))
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<BR>
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[snapscan] usb_cmd(5,0xbffff594,6,0x0,0x0 (0))
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<BR>
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[snapscan] usb_cmd: cmdlen=6, datalen=0
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<BR>
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[snapscan] usb_write: writing: 0x17 0x00 0x00 0x00 0x00 0x00
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<BR>
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[snapscan] usb_read: reading: 0xfb 0x00 0x00 0x00 0x00 0x00 0x00 0x00
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<BR>
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[snapscan] close_scanner
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<BR>
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[snapscan] usb_close(5)
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<BR>
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[snapscan] sane_snapscan_exit
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<BR>
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</output>
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<BR>
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<P>Went back to original snapscan patched files from sane1.0.1, . It works same as always.
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<BR>
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<P>Is there any quality, or speed improvements for the 640U by using the latest snapscan backend with 1.0.4 code? I think I read something about colors being slightly off in the earlier setup.
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<BR>
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<P>What I did (patch 1.0.1 source with snapscan-usb patch from here <A HREF="http://hem.fyristorg.com/henrikj/snapscan/">http://hem.fyristorg.com/henrikj/snapscan/</A>. I then edited snapscan.h to recognize a FlatbedScanner13 as SNAPSCAN600. Then copied the source files snapscan* into the sane-backends 1.0.4 and compiled. So I have the newer frontends, but the older backends.
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<BR>
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<P>What am I missing by not having the latest backend? (I tried comparing source code, but it is a bit overwhelming seeing as I don't know C (do know fortran, java, limited c++), don't know scanners, or the manufacturers specs, or even what I should be looking for. (I know, I should learn C). The main difference is the addition of the PRISA620S model, which my scanner is recognized as in 1.0.4 instead of a SNAPSCAN600.
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<BR>
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<P>ps - I am willing to comply with any requests you have to get 1.0.4 working with this POS scanner.
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<BR>
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<P>Thanks guys.
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<BR>
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<PRE>
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--
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...elbows out,
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stick on the ice!
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<P>--
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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?Subject=Re:%20Acer%20640U,%20re:%20Christian%20and%20Sebastien's%20suggestions&In-Reply-To=<20010208135428.09d92b06.snowsquirrel@home.com>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0085.html">Oliver Rauch: "Re: Preview problems on Solaris Sparc"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0083.html">Oliver Rauch: "Re: Solaris works! New problem."</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0092.html">Sebastien Sable: "Re: Acer 640U, re: Christian and Sebastien's suggestions"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0092.html">Sebastien Sable: "Re: Acer 640U, re: Christian and Sebastien's suggestions"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Thu Feb 08 2001 - 11:42:14 PST</EM>
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