Page-Flipping mode on newest ARM HP49+/50G

Hello

looking at programming a greyscale interface with a code compatible
with the HP Graphic range from HP48S to HP50G, i decided to go for a
simple page-flipping methodology which seems to be valid for all
mentionned calcs.

Well, at least, it seems to work properly when using Emu48.
But well, this coud just be a side-effect of this emulator ?

Could any HP50G/49+/48GII user tell if greyscale page-flipping does
work on its real hardware ?

In case of doubt, here are some binaries for testings.
http://img41.xooimage.com/files/d/9/c/greyscale-hp48-49-test1-6b3726.zip

Note that this "simple sample" only handles 56 lines, so large-screen
(80 lines) will have some garbage on the lower part.
This can be corrected, but it's no use to spend much time on it if the
principles at stake are not running properly on the first 56 lines.


Regards

Yann
.