System for automatic fault searching applicable to any electronic digital equipment controlled by a processor

摘要

Object of the present invention is a technology for searching an hardware fault in a electronic Printed Board Assembly (PBA) controlled by a processor without using any external test equipment. Purpose of this invention is a way to reveal an hardware faults among tracks connection or interposed devices, including processor bus tracks and any other tracks connected to whatever digital device's pins (we mention these pins as: "ports"). The present invention can be seen as divided in four different main topics: 1 - algorithmi 2 - additional digital circuit to be implemented in a device for processor bus's tracks check (Registers); 3 - additional digital circuit to be implemented in the same devices of previous point 2 for the extension of the test to the remaining port tracks (Digital cells for ports); 4 - PBA architecture for connecting processor, devices, modules.