Variables for the A2100 are dependent on several items such as the machine manufacturer (i.e. Cincinnati, Tree, Mighty, etc.), type (VMC, HMC, TC) and Model (Arrow, Sabre, Lancer, Hawk, Avenger). It was also used as a retrofit control on many different types of machines which each had custom MAI's written for them. There were too many variations to just randomly guess as to what you are looking for.