sane-project-website/old-archive/1997-07/0113.html

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<title>sane-devel: Re: Help: Umax Vista-S6E / umax-sane problem: problem FOUND??</title>
<h1>Re: Help: Umax Vista-S6E / umax-sane problem: problem FOUND??</h1>
<b>Jay Kuri</b> (<a href="mailto:jaykuri@oneway.com"><i>jaykuri@oneway.com</i></a>)<br>
<i>Tue, 22 Jul 1997 02:15:44 -0500 (CDT)</i>
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   I have some more info!!  <br>
<p>
   after fiddling with it for a few minutes this evening I found out that<br>
the scan works fine when you place xscanimage in any mode other than<br>
color.  IE, if I switch scan-mode to grey, I can scan away to my hearts<br>
content... but if I switch it to color, I get nothing. <br>
Below are scsi-commands to the scanner from xscanimage (they start at the<br>
window-id) The first comes from a color scan, the second from a greyscale<br>
scan.<br>
<p>
Now here's the interesting bit... between a color scan (that fails):<br>
                                           v-window id<br>
home /kernel: 000: 00 00 00 00 00 00 00 f6 01 00 00 1b 00 1b 00 00<br>
home /kernel: 016: 00 00 00 00 00 00 00 00 27 c1 00 00 36 b0 00 7f<br>
home /kernel: 032: 00 05 08 00 03 03 00 00 00 00 00 00 00 00 00 00<br>
Image Comp Mode	------^^<br>
home /kernel: 048: 01 80 ff 00 00 00 0f 11 01 00 00 00 00 00 00 00<br>
     Color select ----^^<br>
<p>
and a greyscale scan (that works):         v-window id<br>
<p>
home /kernel: 000: 00 00 00 00 00 00 00 52 00 00 00 1b 00 1b 00 00<br>
home /kernel: 016: 00 00 00 00 00 00 00 00 27 c1 00 00 36 b0 00 7f<br>
home /kernel: 032: 00 02 08 00 03 03 00 00 00 00 00 00 00 00 00 00<br>
Image Comp Mode ------^^<br>
home /kernel: 048: 01 00 ff 00 00 00 0f 11 01 00 00 00 00 00 00 00<br>
     Color select ----^^<br>
<p>
<p>
There are only three differences:<br>
<p>
1. The window-id, color = 01 (for red), grey = 00 (for all).<br>
2. The 'Image Composition mode', rgb_full = 05, grey = 02.<br>
3. The 'select color' flag, which appears to be 80 for color, and 00 for<br>
   grey.  <br>
<p>
The 00 for grey looks correct, but the 80 for color doesn't look right to<br>
me.  Isn't 80 the value for WD_speed_smear?  Could there be some strange<br>
mis-calculation going on here?<br>
<p>
Thanks again, and any insight would be greatly appreciated!<br>
<p>
Jay<br>
<p>
<pre>
---
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