The AST cards were part of Apple's bid for corporate acceptance, along with Tokenring networking and parity RAM. Phoenix Technologies as well as Apple had a hand in the card's design according to contemporary reports. Sadly I don't have much technical data on the cards. Can anyone tell me whether they used an 8088 or 8086 processor? How was RAM provided?

Another oddball are the Perfectek Corporation DOS cards. These were promoted at the Mac World show in San Francisco, 1987 but no test samples were available. Descriptions were provided for three models -- for the Plus, SE and Mac II. Shipments were promised for March 1987 but nothing seems to have appeared even in 1988. Has anyone seen one?