Designing and reasoning about real-time systems are difficult activiti
es, in which timing and reactive behaviour requirements add significan
t complexity to system validation. In this paper, a new technique for
distributed prototyping of real-time systems is presented. It enables
system prototypes to be concurrently developed and tested by a geograp
hically distributed team, in such a way that each developer can valida
te his or her part of the system against the other parts which are bei
ng built in other development sites. A set of tools hits been implemen
ted that supports validation of functional and time behaviour through
distributed animation of graphical prototypes with a consistent vision
of simulated time.