Valeo Neiman

Gilles Chelard

Alain Sague

A method of associating the reception of a reset pulse by a microprocessor with access to a specific subprogram depending on whether the reset pulse is associated with a system incorporating the microprocessor being switched on for the purposes of 'waking up' the microprocessor, or whether it constitutes a request coming from some other unit in the system, the method being wherein it comprises the following steps: on switch-on, causing a logical data item accessible by the microprocessor to change from a first state to a second state only after a certain time interval has elapsed since the switch-on; on each occasion that a reset pulse is received, reading the logical data item before the time interval has elapsed; and depending on whether the logical data item is in its first state or in its second state, branching either to an initialization subprogram appropriate to switch-on, or else to a subprogram appropriate to processing the request.

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Issou, France

Gilles Chelard