 After testing all of the available processors and finding them lacking, Acorn decided that it needed a new architecture.Inspired by white papers on the Berkeley RISC project, Acorn seriously considered designing its own processor.A visit to the Western Design Center in Phoenix, where the 6502 was being updated by what was effectively a single-person company, showed Acorn engineers Steve Furber and Sophie Wilson they did not need massive resources and state-of-the-art research and development facilities.