Как–то я раньше не смотрел на GNAT for Lego NXT, а тем временем:
> Differrently from the 2009 release of GNAT GPL for the LEGO MINDSTORMS NXT, the 2010 release does not rely on any operating system: it is an Ada-only bareboard solution leveraging on Ada 2005 features for concurrent and real-time behaviour.
Среди этих фич, например, управление политиками планировщика:
http://www.adaic.org/resources/add_conte.....D-2-6.html