This paper describes a development environment supporting a design met
hod aimed at small real-time embedded applications with distributed ar
chitecture. After discussing the notion of local time and reviewing th
e method, main attention is focused on basic concepts of the environme
nt. The prototyping tool, which belongs to this environment and serves
for validation and testing of specifications, is discussed in more de
tail to exemplify formal foundations and implementation ideas of the t
ools.