Not sure if your screen can handle it, but have you considered JTWAT? It is Java based and if your CE device has Java on it, you might be able to use it as a TW Helper.
You can download it from here:
http://sourceforge.net/projects/j-twat/
Install it on a Windows based PC and then take the Java files off of it to install on your CE device. Or I think the J-TWAT.zip file should have just the Java files in it.
It is buggy, won't restore a saved game without crashing, but you can play TW on it.