题解 | #游戏机计费程序#
游戏机计费程序
https://www.nowcoder.com/practice/50188fb7e23b4eee86f8c463c8284f5e
`timescale 1ns/1ns module game_count ( input rst_n, //异位复位信号,低电平有效 input clk, //时钟信号 input [9:0]money, input set, input boost, output reg[9:0]remain, output reg yellow, output reg red ); always@(posedge clk or negedge rst_n )begin if(!rst_n) remain<=0; else if(set) remain<=remain+money; else if(boost) remain<=remain-2; else remain<=remain-1; end always@(posedge clk or negedge rst_n )begin if(!rst_n) begin yellow<=0; red<=0; end else if(remain==0) begin yellow<=0; red<=1; end else if(remain>=10) begin yellow<=0; red<=0; end else begin yellow<=1; red<=0; end end endmodule