Added info concerning GL646 chipsets.

unsupported/canon-3000.html

@@ -32,15 +32,18 @@
     </p>
     <h2>Chipset</h2>
     <p>
+      Genesys Logic GL646+GL660
     </p>
     <h2>Comments</h2>
     <p>
-      1200x2400dpi USB2 scanners. The 3000F seems to be the same as 3000, but
-      with transparency adapter. Is sold at least in the UK.
+      Despite the failing test for GL646+GL660 this scanner is reported to use
+      these chips. Therefore it may be possible to support it by the <a
+      href="http://www.meier-geinitz.de/sane/genesys-backend/">genesys backend</a>
+      in future.
     </p>
     <p>
-      The Canon website indicates that this scanner is the successor of the
-      <a href="canon-d1250u2.html">Canon Canoscan 1250U2</a>. Maybe it's the same or similar hardware?
+      1200x2400dpi USB2 scanners. The 3000F seems to be the same as 3000, but
+      with transparency adapter. Is sold at least in the UK.
     </p>
     <h2>Output of /proc/bus/usb/devices or sane-find-scanner -v -v</h2>
     <pre>

unsupported/canon-5000f.html

@@ -31,8 +31,15 @@
     </p>
     <h2>Chipset</h2>
     <p>
+      Probably Genesys Logic GL646+GL660
     </p>
     <h2>Comments</h2>
+    <p>
+      Despite the failing test for GL646+GL660 this scanner may use
+      these chips. Therefore it may be possible to support it by the <a
+      href="http://www.meier-geinitz.de/sane/genesys-backend/">genesys backend</a>
+      in future.
+    </p>
     <p>
       There is now a <a href="http://gna.org/projects/canoscan5000F">project for
 	that scanner</a>.