题目:
Exams/review2015 fsmonehot
Given the following state machine with 3 inputs, 3 outputs, and 10 states:
解题:
module top_module(input d,input done_counting,input ack,input [9:0] state, // 10-bit one-hot current stateoutput B3_next,output S_next,output S1_next,output Count_next,output Wait_next,output done,output counting,output shift_ena
); //// You may use these parameters to access state bits using e.g., state[B2] instead of state[6].parameter S=0, S1=1, S11=2, S110=3, B0=4, B1=5, B2=6, B3=7, Count=8, Wait=9;assign B3_next=state[B2];assign S_next=(state[S]&!d)|(state[S1]&!d)|(state[S110]&!d)|(state[Wait]&ack);assign S1_next=state[S]&d;assign Count_next=state[B3]|state[Count]&!done_counting;assign Wait_next=state[Count]&done_counting|state[Wait]&!ack;assign done=state[Wait];assign counting=state[Count];assign shift_ena=state[B0]|state[B1]|state[B2]|state[B3];// assign B3_next = ...;// assign S_next = ...;// etc.endmodule
结果正确:
本题考查ONE-HOT独热码