Patent US 5,487,153

The sequencer (14) is part of a computational system (10) which includes a computational circuit component, or processor node array (16); the sequencer, or controller component (14); and a boundary interface (34) between the computational circuit component (16) and the controller component (14). The controller component (14) provides three main functions in the system: (one) it sequences computations in a computational component (16), which includes an array of processor nodes (74, 76, 78, 80, 82, 84); (two) it provides I/O processing (20) from several disparate sources between the processor node array (16) and a host processor (12); and (three) it synchronizes data flow from a substantially asynchronous portion of the system (12) with a substantially synchronous data flow in the processor node array portion of the system (16).