A method implemented by means of a data processing system associated with a so-called configurator computer program, for automatically generating source files of a global simulation model for simulating an architecture comprising a system under development, said global simulation model comprising, on the one hand, software models of constituent components of the system under development that can constitute, using the Configurator, a machine or part of a machine and, on the other hand, software models of simulation environment components, said source files enabling the system under development to be tested and checked by simulating its operation in an environment identical to, very close to its final use, the method including establishing a configuration defining file (FCONF) of architecture components in a high level language, these components constituting determined functional blocks for describing functionalities of integrated circuits or parts of integrated circuits, and being chosen by the user-designer in a library of different types of constituent components and a library of environment components to constitute the global simulation model of the architecture specified by an architecture describing file (FDARCH), establishing the source files corresponding to the configuration defining file (FCONF) comprising the following steps of: - reading the architecture describing file (FDARCH) and storing, in a component and connection rule table (TCRC), in a connection consistency rule table (TRCOH) and in a source file formatting table (TMFT), information relating to all the possible configurations, each component obtaining a name identifying, unequivocally, its position in the architecture, as well as a type among several types, - instantiating the components specified in the configuration defining file (FCONF) by the user-designer by means of a list of present components designated by their name and type and including parameters or involving procedures, the configuration defining file (FCONF) comprising a file for selecting the components and their type and optional further indications about the interface type and the server concerned by the configuration to be generated by the Configurator, and storing the corresponding information in an instance connecting table (TCINST), - topologically connecting the instances and storing the corresponding information in an instance connecting table (TCINST), - physically connecting the interface signals, at each instance of the components, by applying regular expressions, stored in the component and connection rule table (TCRC) relating to the name of the signals constituting a wiring table (TCAB), and - using the instance connecting table (TCINST), of the wiring table (TCAB) and the formatting table (TFMT) to automatically generate HDL type (MGHDL) and HLL type (MGHLL) source files of the global simulation model, corresponding to the configuration specified by the configuration defining file (FCONF). - reading the architecture describing file (FDARCH) and storing, in a component and connection rule table (TCRC), in a connection consistency rule table (TRCOH) and in a source file formatting table (TMFT), information relating to all the possible configurations, each component obtaining a name identifying, unequivocally, its position in the architecture, as well as a type among several types, - instantiating the components specified in the configuration defining file (FCONF) by the user-designer by means of a list of present components designated by their name and type and including parameters or involving procedures, the configuration defining file (FCONF) comprising a file for selecting the components and their type and optional further indications about the interface type and the server concerned by the configuration to be generated by the Configurator, and storing the corresponding information in an instance connecting table (TCINST), - topologically connecting the instances and storing the corresponding information in an instance connecting table (TCINST), - physically connecting the interface signals, at each instance of the components, by applying regular expressions, stored in the component and connection rule table (TCRC) relating to the name of the signals constituting a wiring table (TCAB), and - using the instance connecting table (TCINST), of the wiring table (TCAB) and the formatting table (TFMT) to automatically generate HDL type (MGHDL) and HLL type (MGHLL) source files of the global simulation model, corresponding to the configuration specified by the configuration defining file (FCONF).