DEVICE FOR THE AUTOMATIC DETECTION OF THE MEMORY CAPACITY IN A DATA PROCESSING OR DATA TRANSMISSION SYSTEM

摘要

A device is provided for automatically determining the storage capacity of a data processing or transmission system and signalling when the storage capacity is inadequate to handle an incoming address. The store includes a plurality of storage fractions made up of storage modules adopted to be plugged into a printed circuit board having a conductor pattern thereon and connector locations disposed along the conductor pattern. The modules may be plugged into the circuit board and a full storage fraction is established when electrical continuity is established along the whole length of a conductor which connects all of the location localities assigned to a storage fraction. The conductor pattern is interrupted at the connection localities of the modules of one and the same storage fraction. First means are provided for detecting the presence of the storage modules installed in a system and develops a signal in response thereto which is applied to a limit address generator in the form of a priority under the output of the limit address generator corresponds to the installed storage capacity and is compared to an address for access to data in the store in a detector which provides an output alarm signal when the address for access exceeds the capacity of the store.