% one-time x6 init

  Memory = FIR_length - 1;     % channel memory size

  states = FSM( [-1 1], Memory);

  MM_max = size(states,2);      % number of symbol values

  M = MM_max;			% number of states

  zstate_0 = 0;			% NOT initial 0's in the channel

  zstate = 1;			% initial state
