Integrated semiconducting circuit interface for central processor - contains single port memories with random interval and FIFO external access

摘要

An integrated semiconducting circuit, which acts as the external interface of a central processor, contains a number of single-port memories (14,16) for reading and output of data written by the central processor (10) and with the memory capacity to store the data exchanged between the central processor and exterior. The single port memories are randomly accessed by the central processor via a random access device (25) and are accessed by external equipment in a first-in-first-out mode via a serial access device (21). USE/ADVANTAGE - Making connections between systems. Integrated circuit interface reduces load on central processor and occupancy time of system bus for data transfers.