Question: What type of machine, such as the Heathkit H8 which was originally sold in 1977, is required by the products created by Exidy from 1974 until 1986?
Sentence (from "Exidy"): Exidy was one of the largest creators of arcade video games during the early period of video games, from 1974 until at least 1986 (when "Chiller" was released).
Relevant evidence: Yes