Alex's Programming
The Frambuffer HOWTO.
DirectFB - Hardware accelerated graphics library
DirectFB is a thin library that provides hardware graphics acceleration, input device handling and abstraction, integrated windowing system with support for translucent windows and multiple display layers on top of the Linux Framebuffer Device.
handhelds.org -- howtos -- Building X for Handheld
Building TinyX (Xfbdev) for Handhelds