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// OpenSPARC T2 Processor File: mcusat_reg_ack_nack_sample.vrhpal
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       state s_ack_nack0  (2'b00);
       state s_ack_nack1  (2'b01);
       state s_ack_nack2  (2'b10);

       trans t_ack_nack0_1  (2'b00 -> 2'b01);
       trans t_ack_nack1_0  (2'b01 -> 2'b00);
       trans t_ack_nack0_2  (2'b00 -> 2'b10);
       trans t_ack_nack2_0  (2'b10 -> 2'b00);

  // bad states
  //bad_state s_not_ack_nack0 (not state);
    bad_state s_bad_ack_nack3  (2'b11);

  // bad transitions
  //bad_trans t_not_ack_nack0 (not trans);
    bad_trans t_ack_nack1_2  (2'b01 -> 2'b10);
    bad_trans t_ack_nack2_1  (2'b10 -> 2'b01);
    bad_trans t_ack_nack0_3  (2'b00 -> 2'b11);
    bad_trans t_ack_nack3_0  (2'b11 -> 2'b00);
    bad_trans t_ack_nack2_3  (2'b10 -> 2'b11);
    bad_trans t_ack_nack3_2  (2'b11 -> 2'b10);

//}