基于quarters2的verilog状态机代码
时间: 2024-03-21 20:37:50 浏览: 11
以下是基于Quarters状态机的Verilog代码实现:
```
module Quarters (
input clk,
input rst_n,
input coin_in,
input game_start,
input game_end,
input prize,
output reg coin_out,
output reg game_on,
output reg prize_out
);
// 定义状态枚举
typedef enum logic [1:0] {
S_WAIT_COIN,
S_COIN_INSERTED,
S_GAME_ON,
S_PRIZE_OUT
} state_t;
// 定义状态变量和状态转移条件
state_t state, next_state;
parameter COIN_THRESHOLD = 2'b01;
// 定义状态转移逻辑
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
state <= S_WAIT_COIN;
end else begin
state <= next_state;
end
end
// 定义状态转移条件逻辑
always @(*) begin
next_state = state;
case (state)
S_WAIT_COIN:
if (coin_in >= COIN_THRESHOLD) begin
next_state = S_COIN_INSERTED;
end
S_COIN_INSERTED:
if (game_start) begin
next_state = S_GAME_ON;
end else if (coin_in < COIN_THRESHOLD) begin
next_state = S_WAIT_COIN;
end
S_GAME_ON:
if (game_end) begin
next_state = S_PRIZE_OUT;
end
S_PRIZE_OUT:
if (prize) begin
next_state = S_WAIT_COIN;
end
endcase
end
// 定义输出逻辑
always @(state, coin_in, game_start, game_end, prize) begin
// 硬币输出逻辑
case (state)
S_WAIT_COIN:
coin_out = 1'b0;
S_COIN_INSERTED:
coin_out = 1'b1;
default:
coin_out = 1'b0;
endcase
// 游戏启动输出逻辑
case (state)
S_GAME_ON:
game_on = 1'b1;
default:
game_on = 1'b0;
endcase
// 奖品输出逻辑
case (state)
S_PRIZE_OUT:
prize_out = 1'b1;
default:
prize_out = 1'b0;
endcase
end
endmodule
```
注意,此代码仅供参考,具体实现可能因应用环境和需求而异。