Abstract A computer system generates a simulation model of a digital electronic system consisting of a plurality of design units. The computer system comprises a design database storing a plurality of network objects each network object defining one of said design units in terms of a sub-network of further design units. The design database also stores a plurality of previously compiled sub-models for simulating respective design units. A compiler uses the network objects in the design database to expand a selected design unit as a sub-network of further design units, and then generates a list of compiled sub-models stored in the design database for simulating those further design units. A linker links together the compiled sub-models on the list, to produce a compiled simulation model for the selected design unit.
A computer system for generating a simulation model of a digital electronic system consisting of a plurality of design units, the computer system comprising: a) a design database storing a plurality of network objects each network object defining one of said design units in terms of a sub-network of further design units, the design database also storing a plurality of previously compiled sub-models for simulating respective design units, b) compilation means for using said network objects in the design database to expand a selected design unit as a sub-network of further design units, and for generating a list of compiled sub-models stored in said design database for simulating those further design units, and c) linking means for linking together the compiled sub-models on said list, to produce a compiled simulation model for said selected design unit.
Claim 2
Dependent Claim
45 words
A compilation mechanism according to Claim 1 further comprising means for updating an existing simulation model following a change to a sub-model that forms part of it, by linking a later version of a sub-model into the simulation model in place of an existing sub-model.
Claim 3
Dependent Claim
59 words
A compilation mechanism according to Claim 1 or 2, further including a steering file comprising a set of statements, each specifying whether a design unit is to be expanded as a sub-network, represented in terms of its behaviour specification, simulated by a previously compiled sub-model, or concurrently compiled as behavioural specification arranged in parallel with said sub-model or sub-network.
Claim 4
Independent Claim
130 words
A method of generating a simulation model of a digital electronic system consisting of a plurality of design units, the method comprising the steps: a) creating a design database holding a plurality of network objects, each network object defining one of said design units in terms of a sub-network of further design units, the design database also holding a plurality of previously compiled sub-models for simulating respective design units, b) using said network objects in the design database to expand a selected design unit as a sub-network of further design units, and generating a list of compiled sub-models stored in said design database for simulating those further design units, and c) linking together the compiled sub-models on said list, to produce a compiled simulation model for said selected design unit.
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