A collision-free extension to the mutual inter-unit test methodology for d-dimensional VLSI multiprocessors is proposed to guarantee that any processor core is tested only by its neighboring node at a time and no special care needs to be taken to choose those moments when test actions should start. Collision resolution hardware based on the round-robin arbitration routine is discussed... https://www.chiggate.com/jerome-brown-philadelphia-eagles-mitchell-ness-1990-legacy-jersey-discount/