Hello In the mid 80ies i was at school in Sk?vde Sweden. At that time that school had a PRIME 9955 system together with the normal serial terminals and also a fair number of specialist CAD workstations. The CAD stations was used for MEDUSA and another Electronic CAD package (we did PCB designs in that system.) I have two questions (because of a foggy memory): what was the maker of the work stations (or who could they be) ? and could someone name a number of pcb design programs for PrimOS ?