A, is complemented when this controller goes from state 5 to 6, that is, on q1q2q3M. The one thing that has been omitted so far is the time out. A base 100 counter is built with two decade counters. It is cleared when going from state 2 to 3 or from 4 to 5 and is enabled whenever the controller is in state 2 or 4. It uses the static clear and preset inputs of the controller flip flops to set the controller to state 1 as the counter rolls over, that is, goes from 99 to 00.