Abstract: A system for providing a simple, easy to learn and flexible means of creating user interfaces to products under development without the need of a programming language or the need to learn a large set of complicated commands. The Visual Software Engineering ("VSE") system of the invention uses a simple concept of defining both input to and output from graphical objects in an object-oriented system by providing examples of what the user desires the graphical object to do. This technique is referred to herein as "animation by example". In accordance with this process, the user creates a user interface by drawing the user interface with a graphics editor and then defining the output behavior (i.e., graphics manipulation) of the user interface components by showing each state or frame as an animation. This is accomplished by changing the object using a graphic editor function such as move or rotate and storing each of the frames with the object as a behavior state.

Abstract: A system for inserting code markers for observing indications (external to the microprocessor upon which the software operates) of the occurrence of an event in the execution of the software. Additional instructions or markers are added to the software to be debugged to produce simple, encoded, memory references to otherwise unused memory or I/O locations that will always be visible to a logic analyzer as bus cycles. Although the code markers cause a minimal intrusion in the underlying software, they make tracing events by a conventional logic analyzer much simpler and allow for performance evaluations in manners not heretofore possible. The inserted code markers provide a method of dynamically extracting information from a running host or real-time "black box" embedded system under test using simple low intrusion print statements, encoded I/O writes on procedure entries and exits, and/or an interface to service calls and the like which writes out the passed parameters.