Circuits on a superconductive chip are basically low impedance. The connections between these, of necessity and naturally, are made with transmission lines. Since the lines involve ``zero resistance'' metallurgy, they have very low dispersion and very low loss. Therefore, routing around the chip is constrained fundamentally by time-of-flight rather than signal attenuation. (This zero resistance also can be used as interconnect on semiconductor chips to reduce the interconnect loss of submicron circuitry.)