Problems with Win CE and palette

I realise that the Windows CE version of SDL isn’t officially supported
but I’m still hoping that someone might answer my question.
It seems like setting the videomode to 8 bpp doesn’t work. No functions
return any errors, the screen->format->palette is correct, but nothing
is drawn on the screen, it’s just all black. I’ve tried using the
default palette, using my own palette, fullscreen, non-fullscreen etc.
but it just won’t work. The exact same code works just fine on every
other non-CE machine i’ve tested it on.
Is the support for 8 bpp broken or am I doing something wrong?