Tcl and Concurrent Object-Oriented Flight Software: Tcl on Mars

David E. Smyth
david@devvax.jpl.nasa.gov
Mars Pathfinder Flight Software Team
Jet Propulsion Laboratory
MIDCOM Corporation

	...This paper describes the current early develoment effort,
	where we are using Tcl and its object oriented extension itcl,
	combined with tclX, blt, and tk, as the language for inter-object
	messages, for the monitor and control environment, and for the
	inital implementation of several flight softare responsibilities.
	As the system develops, the flight software may remain as Tcl, or
	it may evolve into C.  The similarity between Tcl and C makes the
	translation of objects from Tcl to C reasonably straightforward....