Circular access linkage loop configuration for system communication

A current mode logic system of the type including a plurality of sequential logic modules which communicate to one another;

• the improvement comprising:
• a current mode input gate and a current mode output gate in each of said modules in which an essentially constant current is switched through a pair of resistive elements to indicate the gate's logical state;
• said modules being connected output-gate-to-input-gate to form a loop for data transmission;
• a single centralized control means, outside of said loop, having a plurality of control outputs for generating thereon a plurality of control signals in parallel;
• each module of said plurality including a decode means coupled to preselected ones of said control outputs for indicating a Send mode, an Idle mode, and a Receive mode for a preselected time period in response to the control signals that it is sent by said control means;
• each of said modules further including synchronized means for sending data from a respective storage means through its current mode output gate in response to said Send mode, for receiving data on its current mode input gate and regenerating the same on its current mode output gate with no sequential logic delays therebetween in response to said Idle mode, and for storing data from its current mode input gate in response to said Store mode;
• whereby multiple pairs of said modules can communicate simultaneously and in synchronization with each other over respective portions of said loop in response to said parallel control signals.