A series of High Density Prototyping Eurocards – circuit boards specifically created for the  high-speed point to point, Roadrunner® System and its rapid hand wiring method of interconnecting Dual In Line (DIL) Integrated Circuits and early Micoprocessors. The versatility of the designs are equally suitable for a wide range of uses, including wire-wrap or other high-density general-purpose prototyping applications. Guidelines and instructions are available in the Downloads section.