Hi,
I'm trying to get libmaple running on an ET-STM32 Stamp.. not having much luck yet, its hanging in the startup code somewhere. Anyway I needed to modify cs3lib and rebuild for debugging purposes. It seems that cs3.h is missing.
I found one here that works: http://code.google.com/p/plex-svn/source/browse/trunk/h103/cs3.h?r=404