This is a small scientific open source computer project with DSP, scope, FFT, Bode, etc...ability.
I am currently working on the small (but fast) video card for a 480*272 color LCD screen:
=> 2 bits per color
=> data transfert up to 6 MB/s
=> up to 50 pictures/s
=> 256 kB RAM => 2 pictures stored (you can modify one while showing the other one)
=> 16 lines status bar