OK, I've been playing with this acornfb.c frame buffer
driver now for a while and with RMK's help have been
able to get 16BPP mode working on the webpal.
There are still problems left, 1 major, 1 minor, I hope
someone can help with.
when setting for 16 "fbset -depth 16"
Minor: we loose the console's cursor (still there just
Major: X will not fully come up, I get a "caught signal 11"
and back to the console. I had modified scratchy's supplied
XF86Config to change the depth from 8 to 16.
I have verified the 16BPP working by using a program called
"fbi" http://bytesex.org/fbi.html , I did have to make one
change to that. I am fairly sure the change is needed for fbi
in this case and not the acornfb driver, but not 100% sure
until I can find other programs to verify.
If you want to try my version of fbi that corrects the RGB to
the CLPS7500E's BGR format, build and install fbi version 1.25
and overwrite /usr/local/bin/fbi with this:
http://n1gp.0catch.com/fbi.zip ,(unzip it 1st), I'll submit a
patch to this once I can verify it is indeed a problem.
I submitted 2 patches for acornfb.c to RMK's ARM site for
hopefully the next rmk patch. You can grab them from the
Let me know how you make out with this. Really would like to
get X working in 16BPP...