Minicomputer asynchronous memory control system - has several memory module and single toway common lines such that max. data transfer is achieved with min. signalling lines

摘要

The asynchronous memory system has a memory unit and a memory control associated with the memory unit. Receiving means in the memory control, receive mode control signals emanating from a unit external to the memory. There signals indicate the reading, writing and increase/decrease modes of operation. The memory system has means for producing a memory signal in response to each of the mode control signals. A single path is used for transmission of all the control signals from the memory control to the unit external to the memory. The system includes several memory controls each associated with a memory unit. The external unit is a central data processor or a data channel. The memory signal is a first transition from a lower to an upper voltage level, which indicates recognition of reception of mode control signals.