Method and apparatus for associating the reception of reset puls

Details Method and apparatus for associating the reception of reset puls Method and apparatus for associating the reception of reset puls

1993-04-19

1995-01-31

Harvey, Jack B.

395725, 395700, G06F 124

Patent

active

053865766

ABSTRACT:
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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