A multi-functional general purpose random access memory is fabricated on a single semiconductor substrate. The substrate includes a memory array including a plurality of pages, at least one processing element, and internal-external address mapping means. The pages, processing element, and mapping means are connected to each other by clock, control, data, and address signal lines. The signal lines connect the at least one processing element and the internal-external mapping means to a host processor via an external access path, and signal lines connect the at least one processing element and the memory pages via a multi-function access path, and the signal lines connect the internal-external mapping means to the memory pages via in internal access path.