News taken from GBAdev.org:
Frederic has released a demo of his LOFT system:This is a little prey-predator system. The originality is that it is programmed in a language called LOFT which allows for concurrent programming (with a variant of threads, called FairThreads). The objective of LOFT is to ease the programming of behavioral aspects in embedded systems such as the gba.
A Web page describes the context:
http://www.inria.fr/mimosa/rp/LOFTThe LOFT compiler can be obtained from there (GNU license).

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