You must be thinking about Multibus II. The original Multibus (IEEE 796) was very basic. Historical note, the DSP satellite (NORAD missile warning) ground netwo

You must be thinking about Multibus II. The original Multibus (IEEE 796) was very basic. Historical note, the DSP satellite (NORAD missile warning) ground network ran on Multibus based systems from 1988 until 2005.