Comments from Curt @ Atari Museum (July 2005):

What I can do is share with you many of the emails I exchanged with several of the people who ran Mindset. I got heavily involved with researching and collecting Mindset because basically it was an Atari computer system, brief history:

Roger Baderscher (President of Mindset) was the head of Atari's Home Computer Division from 1980-1982 and had quietly commissioned the design of a new modular computer system while at Atari, using Atari Industrial Design resources and tapping into one of Atari VLSI engineers Chris Rhode. Roger, Chris and about a dozen Atari Home Computer division engineers would leave Atari in 1982 and form Mindset, and their quiet skunkworks project would become a reality.

I've got some nice brochures and other materials I can scan and send to you, I have every module, expansion pak and controller made for the system and Chris Rhodes has promised me that eventually when he digs up his old schematics and notes he'll send them my way for the M-1001 Mindset. I also have 2 M-3000's which are the rackmount JVC'd versions of the Mindset system that JVC used in-house after they bought Mindset in 1986.