Tom Sloper (guidance and ideas), Perry Rodgers (guidance and ideas), Glyn Anderson (for his fine technical reference), Kevin Cooper (for his novel bank switching design), Steve Snyder (for his artwork), Steve Imes (for his in-depth testing), Luis Rivas (whose bulletin board service saved us untold dollars in Federal Express fees), Dave Staugas (of Atari for the many software tools), Jose Valdes (of Atari for the design of the supercart development board)