Running SDL on a monochrome (1-bit) framebuffer

Hi,

trying to use the SDL-library for an embbeded Linux GUI on a monochrome
(1-bit/pixel) FSTN LCD I’m stucking because the missing support for
1-bit depth framebuffers.
Please give me a hand for extending the SDL framebuffer support for
monochrome framebuffers, telling me where I may find some info’s how to
do that. If one has done something similar (ipod-port) please contact
for cooperation.

thanks
mzacharias