独热码编码
s_next的意思是下一个状态是s的逻辑...
module top_module(
input d,
input done_counting,
input ack,
input [9:0] state, // 10-bit one-hot current state
output 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[Count]&~done_counting|state[B3];
assign Wait_next=state[Wait]&~ack|state[Count]&done_counting;
assign done=state[Wait];
assign counting=state[Count];
assign shift_ena = state[B0]|state[B1]|state[B2]|state[B3];
// etc.
endmodule