Interchangeable interface circuit structure

Abstract From the Canadian patent

The present disclosure describes an interface circuit arrangement which per se includes: a means for being addressed in accordance with its physical location a means, to generate signals which identify the circuit being addressed; and means to generate signals which effect a diagnostic routine of the circuit being addressed. The present disclosure further describes means which operate, in conjunction with a data handling system to assert, a priority value assigned to the interchangeable interface circuit and which, based on that priority determines which, one of a number of interchangeable interface circuits will be permitted to control a common data path.