%T Incremental behavioral simulations on a network of transputers
%A Keith Dimond, Samir Hassan
%E Stephen J. Turner
%B OUG\-12: Tools and Techniques for Transputer Applications
%X Simulation plays an important role in the design process for
modern digital and analogue systems. There are many
different types of simulators capable of representing the
behaviour of the system at a number of different levels of
abstraction. Because of its vital importance there is an
ever increasing need to enhance the performance of
simulators. Enhancements can occur in many different
aspects. These may be in the speed of simulation, or in the
accuracy of modelling. This paper describes a relatively new
enhancement that of incremental operation which has the
advantage of allowing the simulator to respond very rapidly
to design changes in addition to providing an enhanced rate
of simulation.The simulator which is described in this paper
operates at the behavioural level. This allows the designer
to specify, using suitable code segments descriptions of the
behaviour of the functional blocks which make up the design.
This approach may be used to model a digital system at the
gate level, where signal values correspond to standard logic
levels. In addition this mode of simulation has the
attraction of being able to model very complex blocks which
might very well have inputs and outputs which are most
conveniently represented by complex data structures. This
simulator is able therefore to model a complete system, some
parts represented at this nigh\-level of abstraction whilst
other parts may be modelled at the lower levels of
abstraction where greater detail is required.
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