Bidirectional interface utilizing read-only memory, decoder and multiplexer

摘要

An apparatus matches control code signals and data signals between data processing units which employ different control code formats. The interface is especially suitable for use between a computer bus interface and a controller or between two separate controllers. It employs read-only memory circuits which convert control code signals from the computer bus into discrete controls and commands compatible with the code format of the controller. The read-only memory circuits are programmable to allow looping programs to be implemented.