数字电子技术综合实验报告——简易电子琴

时间：2024.4.20

数字电子技术综合实验报告

2012--2013学年第二学期

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实验指导老师:

一、设计任务·········································································2

二、设计方案·········································································2

三、系统框图·········································································3

四、方案实现·········································································3

1.乐曲演奏的原理······································································3

2.总体方案·················································································4

五、实验结果·········································································6

六、方案优化·········································································7

七、心得体会·········································································7 附录·························································································7

1. VHDL源程序·····································································7

2. 各层次原理图·································································35

3.编译报告··········································································40

题目: 简易电子琴设计

摘要

电子琴的设计大规模可编程逻辑器件（FPGA）作为系统的核心控制部分通过软件的设计编写然后进行软硬件的调试运行最终达到设计电路的乐器演奏、选歌及显示功能。设计中采用计数原理控制演奏器发声，对音乐发生所必须确定的音符和节拍分别用程序语言实现。可以用它来弹奏和播放乐曲。特点是设计思路简单、清晰。

关键字：电子琴CPLD

一、设计任务

1. 基本要求

(1) 具有一般弹奏功能；

(2) 自动播放功能；

(3) 数码显示音符功能。

2．发挥部分

(1)能通过选择键在多首歌曲中选择播放；

(2)输出增加功率放大电路，增加歌曲容量；

(3)增加音效或节拍可调；

(4)无线弹奏。

二、设计方案

采用大规模可编程逻辑器件（FPGA），利用quartusII，通过verilog代码实现简易电子琴演奏电路。

三、系统框图

四、方案实现

1.乐曲演奏的原理：

乐曲演奏的原理：组成乐曲的每个音符的频率值(音调)以及持续时间（音长）是乐曲能持续演奏所需的两个基本数据，因此只要控制输出到扬声器的激励信号的频率的高低和持续的时间，就可以使扬声器发出持续的乐曲声。 ? 音调的控制

数字电子技术综合实验报告简易电子琴

频率的高低决定了音调的高低。音乐的十二平均率规定：每两个八度音（如简谱中的中音1与高音1）之间的频率相差一倍。在两个八度音之间，又可分为十二个半音，每半个音的频率比为

。另外，音名A(简谱中的低音6)

的频率为440HZ，音名B到C之间，E到F之间为半音，其余为全音。由此可以计算出简谱中从低音1至高音1之间的每个音名对应的频率如图所示: 3

所有不同频率均从同一基准频率分频得到。将分频数四舍五入进行取整，并尽量减小误差。在本设计中选取6MHZ作为基准频率。从下表中可以看出最大分频系数为11468，采用14位二进制计数器分频可满足要求。此外还应给出预置数，对应不同的预置数，只需加载不同的预置数即可。采用加载预置数实现分频的方法比采用反馈复零法节省资源，实现起来更加容易。

数字电子技术综合实验报告简易电子琴

? 音长的控制

音符的持续时间须根据音乐的速度及每个音符的节拍数来确定。如果设定全音符的持续时间为1S的话，假设产生4分音符，则产生四分频即可实现四分音符的时长，并提供4HZ分频器。如图为乐曲演奏的原理图，其中，乐谱产生电路用来控制音乐的音调和时长。控制音调通过设置计数器的预置数来实现，预置不同的数值会可以使计数器产生不同频率的信号，从而产生不同的音调。控制音长是通过控制计数器预置数的停留时间来实现的，预置数的停留时间越长，则该音符的演奏时间越长，如2分音符，在记谱时将该音符记录两次即可。

2.总体方案

系统设计运用了自上而下的模块化设计思想，整个系统可分为分频，播放，弹奏，显示四个部分。 1. 分频部分

分频部分为一个可预置数的加计数器、二分频器和预置数选择器。预置数选择器选择来自播放和弹奏部分的不同的预置数。从预置数起循环作加计数，计到16383时产生一个高电平，否则得到低电平，将信号再进行二分频便可得到方波信号。预制数不同，产生的方波信号频率也不同。因此，只要

改变加计数器的预置数，便可由6MHz的时钟信号分频得到不同频率的方波。将方波信号输出到扬声器，便可发出不同音调的声音。

2. 播放部分

播放部分为一个节拍发生器、预置数获得器和一个存储器。节拍发生器将一个64Hz的时钟信号分为32Hz，16Hz，8Hz和4Hz的信号，以适应不同歌曲的播放速度。预置数获得器将音阶信号转换为对应的预置数。存储器将歌曲的预置数传送给分频器，实现曲目的不同音调和音长。

3. 弹奏部分

弹奏部分有十四个按键，每个按键对应一个音阶，及对应一个预置数，将预置数传递给分频部分便可得到不同频率的方波，从而产生不同的音调。

4. 显示部分

在进行音乐播放或弹奏时，将产生的预置数传递给此模块。根据不同的预置数，产生不同的信号，输出到数码管，便可显示出音阶数字。

5. 功能仿真

（1）综合

仿真结果：设置输入信号key1为高电平，此时设置key=8192，即

key2=1，key3~key15=0。功能为播放第一首歌，在仿真结束后，如图示，fout为蜂鸣器的输出，led为数码管显示。如图示也正确，所以本设计经过仿真证明正确可行。

数字电子技术综合实验报告简易电子琴

（2）总电路原理图

（3）引脚分配

输入信号：1个6MHz时钟信号，1个64Hz时钟信号，1个功能

选择按键，14个弹奏(选择)按键；

输出信号：3个数码管输出，一个蜂鸣器输出声音。

五、实验结果

在编译并仿真后下载，通过硬件测试，实验达到预期效果，当key1=0时，通过key2~key15这14个按键的键入蜂鸣器可以发出中音及高音的do~xi十四个音阶的音，即表示了电子琴的弹奏功能；当key1=1时，key2=1

数字电子技术综合实验报告简易电子琴

时播放了第一首

歌；key3=1时，播放了第二首歌；key4=1时，播放第三首歌；key5=1时，播放了第四首歌。发出声音的同时，数码管可以显示不同的代表音符的数字。通过硬件的测试，所有的设计目标均实现。

六、方案优化

若采用正弦波代替方波来驱动扬声器将会有更好的效果。

七、心得体会

本次设计要用quartusII软件，由于之前对此软件不是太熟悉所以导致了一些错误和问题的发生，所以这次课程设计中认真学习了quartusII软件的具体使用步骤和操作流程，对所有可能出现的问题进行逐一攻破。通过这次实验，我不但熟悉了quartusII软件，也了解了开发的最基本流程和方法，也进一步加深了对Verilog编程语言的理解，最重要的是锻炼了我独立思考和分析的逻辑能力，通过从顶向下的设计方法，一步步实现，然后将整个设计串套起来，是我对设计的流程以及编程有了很大的提高。

附录：

1.VHDL源程序

modulechange_fenpinbi(clk_6m, prenum,tofout);//通过预置数改变分频比； input clk_6m; input [13:0]prenum; outputtofout; wire clk_6m; reg [13:0]divider; regtofout;

always@(posedge clk_6m) begin

if(divider==16383) begin tofout=1'b1; divider=prenum; end else begin tofout=1'b0;

divider=divider+14'd1; end end

endmodule

moduleer_fen_pin(tofout,fout); //二分频模块； inputtofout; outputfout; regfout;

always@(posedgetofout) begin fout=~fout; end endmodule

modulefenpin(clk_64,clk_16,clk_8,clk_4); //获得适应不同曲目不同的时钟信号；input clk_64;

output clk_16,clk_8,clk_4; wire clk_64;

reg clk_32,clk_16,clk_8,clk_4; reg counter2; reg [1:0]counter4; always@(posedge clk_64) begin

clk_32=~clk_32; end

always@(posedge clk_32) begin

clk_16=~clk_16; if(counter2==1'b1) begin clk_8=~clk_8; counter2=1'b0; end else

counter2=counter2+1'b1; if(counter4==2'd3) begin clk_4=~clk_4; counter4=2'd0; end else

counter4=counter4+2'd1; end endmodule

moduleget_prenum(clk_sing,scale, prenum_s);//将音阶信号转换为预置数； inputclk_sing; input [4:0]scale; output [13:0]prenum_s; wireclk_sing; wire [4:0]scale; reg [13:0]prenum_s; always@(posedgeclk_sing)

begin case(scale)

5'd0:prenum_s=14'd16383; 5'd1:prenum_s=14'd4915; 5'd2:prenum_s=14'd6168; 5'd3:prenum_s=14'd7281; 5'd4:prenum_s=14'd7792; 5'd5:prenum_s=14'd8730; 5'd6:prenum_s=14'd9565; 5'd7:prenum_s=14'd10301; 5'd8:prenum_s=14'd10647; 5'd9:prenum_s=14'd11272; 5'd10:prenum_s=14'd11831; 5'd11:prenum_s=14'd12074; 5'd12:prenum_s=14'd12556; 5'd13:prenum_s=14'd12974; 5'd14:prenum_s=14'd13346; 5'd15:prenum_s=14'd13516; 5'd16:prenum_s=14'd13829; 5'd17:prenum_s=14'd14109; 5'd18:prenum_s=14'd14235; 5'd19:prenum_s=14'd14470; 5'd20:prenum_s=14'd14678; 5'd21:prenum_s=14'd14846; endcase end endmodule

modulepremusic(clk_16,clk_8,clk_4, key,clk_sing,scale); //预置曲目模块； input clk_16,clk_8,clk_4; input [13:0]key; output [4:0]scale; outputclk_sing; regclk_sing; reg [4:0]scale; reg [4:0]scale1; reg [4:0]scale2; reg [4:0]scale3; reg [4:0]scale4; reg [7:0]counter8_1; reg [7:0]counter8; reg [8:0]counter9; reg [8:0]counter9_1; always@(key)//选择曲目； begin case(key) 14'd8192: begin

scale=scale1;clk_sing=clk_4; end 14'd4096: Begin

scale=scale2;clk_sing=clk_4; end 14'd512: begin

scale=scale3;clk_sing=clk_8; end 14'd1024: Begin

scale=scale4;clk_sing=clk_8; end default:begin

scale=5'd0;clk_sing=clk_4; end endcase end

always@(posedge clk_4)//梁祝；begin

if(counter8==8'd134) counter8=8'd0; else

counter8=counter8+8'd1; case(counter8) 8'd0: scale1=5'd3; 8'd1: scale1=5'd3; 8'd2: scale1=5'd3; 8'd3: scale1=5'd3; 8'd4: scale1=5'd5;

8'd5: scale1=5'd5; 8'd6: scale1=5'd5; 8'd7: scale1=5'd6; 8'd8: scale1=5'd8; 8'd9: scale1=5'd8; 8'd10: scale1=5'd8; 8'd11: scale1=5'd9; 8'd12: scale1=5'd6; 8'd13: scale1=5'd8; 8'd14: scale1=5'd5; 8'd15: scale1=5'd5; 8'd16: scale1=5'd12; 8'd17: scale1=5'd12; 8'd18: scale1=5'd12; 8'd19: scale1=5'd15; 8'd20: scale1=5'd13; 8'd21: scale1=5'd12; 8'd22: scale1=5'd10; 8'd23: scale1=5'd12; 8'd24: scale1=5'd9; 8'd25: scale1=5'd9; 8'd26: scale1=5'd9; 8'd27: scale1=5'd9; 8'd28: scale1=5'd9; 8'd29: scale1=5'd9; 8'd30: scale1=5'd0; 8'd31: scale1=5'd0;

8'd32: scale1=5'd9; 8'd33: scale1=5'd9; 8'd34: scale1=5'd9; 8'd35: scale1=5'd10; 8'd36: scale1=5'd7; 8'd41: scale1=5'd5; 8'd42: scale1=5'd5; 8'd43: scale1=5'd6; 8'd44: scale1=5'd8; 8'd45: scale1=5'd8; 8'd46: scale1=5'd9; 8'd47: scale1=5'd9; 8'd48: scale1=5'd3; 8'd49: scale1=5'd3; 8'd50: scale1=5'd8; 8'd51: scale1=5'd8; 8'd52: scale1=5'd6; 8'd53: scale1=5'd5; 8'd54: scale1=5'd6; 8'd55: scale1=5'd8; 8'd56: scale1=5'd5; 8'd57: scale1=5'd5; 8'd58: scale1=5'd5; 8'd59: scale1=5'd5; 8'd60: scale1=5'd5; 8'd61: scale1=5'd5; 8'd62: scale1=5'd5;

8'd37: scale1=5'd7; 8'd38: scale1=5'd6; 8'd39: scale1=5'd6; 8'd40: scale1=5'd5;

8'd63: scale1=5'd5; 8'd64: scale1=5'd10; 8'd65: scale1=5'd10; 8'd66: scale1=5'd10; 8'd67: scale1=5'd12; 8'd68: scale1=5'd7; 8'd69: scale1=5'd7; 8'd70: scale1=5'd9; 8'd71: scale1=5'd9; 8'd72: scale1=5'd6; 8'd73: scale1=5'd8; 8'd74: scale1=5'd5; 8'd75: scale1=5'd5; 8'd76: scale1=5'd5; 8'd77: scale1=5'd5; 8'd78: scale1=5'd0; 8'd79: scale1=5'd0; 8'd80: scale1=5'd3; 8'd81: scale1=5'd5; 8'd82: scale1=5'd5; 8'd83: scale1=5'd3; 8'd84: scale1=5'd5;

8'd85: scale1=5'd6; 8'd86: scale1=5'd7; 8'd87: scale1=5'd9; 8'd88: scale1=5'd6; 8'd89: scale1=5'd6; 8'd90: scale1=5'd6; 8'd91: scale1=5'd6; 8'd92: scale1=5'd6; 8'd93: scale1=5'd6; 8'd94: scale1=5'd5; 8'd95: scale1=5'd6; 8'd96: scale1=5'd8; 8'd97: scale1=5'd8; 8'd98: scale1=5'd8; 8'd99: scale1=5'd9; 8'd100: scale1=5'd12; 8'd101: scale1=5'd12; 8'd102: scale1=5'd10; 8'd103: scale1=5'd10; 8'd104: scale1=5'd9; 8'd105: scale1=5'd9; 8'd106: scale1=5'd10; 8'd107: scale1=5'd9; 8'd108: scale1=5'd8; 8'd109: scale1=5'd8; 8'd110: scale1=5'd6; 8'd111: scale1=5'd5;

8'd112: scale1=5'd3; 8'd113: scale1=5'd3; 8'd114: scale1=5'd3; 8'd115: scale1=5'd3; 8'd116: scale1=5'd8; 8'd117: scale1=5'd8; 8'd118: scale1=5'd8; 8'd119: scale1=5'd8; 8'd120: scale1=5'd6; 8'd121: scale1=5'd8; 8'd122: scale1=5'd6; 8'd123: scale1=5'd5; 8'd124: scale1=5'd3; 8'd125: scale1=5'd5; 8'd126: scale1=5'd6; 8'd127: scale1=5'd8; 8'd128: scale1=5'd5; 8'd129: scale1=5'd5; 8'd130: scale1=5'd5; 8'd131: scale1=5'd5; 8'd132: scale1=5'd5; 8'd133: scale1=5'd5; 8'd134: scale1=5'd0; 8'd135: scale1=5'd0; default:scale1=5'd0; endcase end

always@(posedge clk_4)//小情歌； begin

if(counter9==9'd334) counter9=9'd0; else

counter9=counter9+9'd1; case(counter9) 9'd0: scale2=5'd0; 9'd1: scale2=5'd0; 9'd2: scale2=5'd15; 9'd3: scale2=5'd14; 9'd4: scale2=5'd15; 9'd5: scale2=5'd15; 9'd6: scale2=5'd14; 9'd7: scale2=5'd14; 9'd8: scale2=5'd15; 9'd9: scale2=5'd15; 9'd10: scale2=5'd14; 9'd11: scale2=5'd14; 9'd12: scale2=5'd12; 9'd13: scale2=5'd12; 9'd14: scale2=5'd10; 9'd15: scale2=5'd10; 9'd16: scale2=5'd12; 9'd17: scale2=5'd12; 9'd18: scale2=5'd12; 9'd19: scale2=5'd12;

9'd20: scale2=5'd14; 9'd21: scale2=5'd14; 9'd22: scale2=5'd14; 9'd23: scale2=5'd14; 9'd24: scale2=5'd13; 9'd25: scale2=5'd13; 9'd26: scale2=5'd13; 9'd27: scale2=5'd13; 9'd28: scale2=5'd13; 9'd29: scale2=5'd13; 9'd30: scale2=5'd13; 9'd31: scale2=5'd13; 9'd32: scale2=5'd0; 9'd33: scale2=5'd0; 9'd34: scale2=5'd15; 9'd35: scale2=5'd14; 9'd36: scale2=5'd15; 9'd37: scale2=5'd15; 9'd38: scale2=5'd14; 9'd39: scale2=5'd14; 9'd40: scale2=5'd15; 9'd41: scale2=5'd15; 9'd42: scale2=5'd14; 9'd43: scale2=5'd14; 9'd44: scale2=5'd15; 9'd45: scale2=5'd15; 9'd46: scale2=5'd17;

9'd47: scale2=5'd0; 9'd48: scale2=5'd17; 9'd49: scale2=5'd17; 9'd50: scale2=5'd17; 9'd51: scale2=5'd17; 9'd52: scale2=5'd17; 9'd53: scale2=5'd17; 9'd54: scale2=5'd17; 9'd55: scale2=5'd17; 9'd56: scale2=5'd0; 9'd57: scale2=5'd0; 9'd58: scale2=5'd0; 9'd59: scale2=5'd0; 9'd60: scale2=5'd0; 9'd61: scale2=5'd13; 9'd62: scale2=5'd15; 9'd63: scale2=5'd13; 9'd64: scale2=5'd15; 9'd65: scale2=5'd15; 9'd66: scale2=5'd15; 9'd67: scale2=5'd15; 9'd68: scale2=5'd15; 9'd69: scale2=5'd15; 9'd70: scale2=5'd16; 9'd71: scale2=5'd17; 9'd72: scale2=5'd16; 9'd73: scale2=5'd16;

9'd74: scale2=5'd16; 9'd75: scale2=5'd16; 9'd76: scale2=5'd0; 9'd77: scale2=5'd12; 9'd78: scale2=5'd14; 9'd79: scale2=5'd12; 9'd80: scale2=5'd14; 9'd81: scale2=5'd14; 9'd82: scale2=5'd14; 9'd83: scale2=5'd14; 9'd84: scale2=5'd16; 9'd85: scale2=5'd16; 9'd86: scale2=5'd15; 9'd87: scale2=5'd0; 9'd88: scale2=5'd15; 9'd89: scale2=5'd15; 9'd90: scale2=5'd15; 9'd91: scale2=5'd15; 9'd92: scale2=5'd15; 9'd93: scale2=5'd15; 9'd94: scale2=5'd15; 9'd95: scale2=5'd15; 9'd96: scale2=5'd17; 9'd97: scale2=5'd17; 9'd98: scale2=5'd17; 9'd99: scale2=5'd16; 9'd100: scale2=5'd16;

9'd101: scale2=5'd16; 9'd102: scale2=5'd15; 9'd103: scale2=5'd15; 9'd104: scale2=5'd16; 9'd105: scale2=5'd16; 9'd106: scale2=5'd16; 9'd107: scale2=5'd15; 9'd108: scale2=5'd15; 9'd109: scale2=5'd15; 9'd110: scale2=5'd12; 9'd111: scale2=5'd12; 9'd112: scale2=5'd12; 9'd113: scale2=5'd12; 9'd114: scale2=5'd12; 9'd115: scale2=5'd12; 9'd116: scale2=5'd12; 9'd117: scale2=5'd15; 9'd118: scale2=5'd14; 9'd119: scale2=5'd13; 9'd120: scale2=5'd12; 9'd121: scale2=5'd12; 9'd122: scale2=5'd12; 9'd123: scale2=5'd12; 9'd124: scale2=5'd12; 9'd125: scale2=5'd12; 9'd126: scale2=5'd12; 9'd127: scale2=5'd12;

9'd128: scale2=5'd0; 9'd129: scale2=5'd0; 9'd130: scale2=5'd15; 9'd131: scale2=5'd14; 9'd132: scale2=5'd15; 9'd133: scale2=5'd15; 9'd134: scale2=5'd14; 9'd135: scale2=5'd14; 9'd136: scale2=5'd15; 9'd137: scale2=5'd15; 9'd138: scale2=5'd14; 9'd139: scale2=5'd14; 9'd140: scale2=5'd12; 9'd141: scale2=5'd12; 9'd142: scale2=5'd10; 9'd143: scale2=5'd10; 9'd144: scale2=5'd12; 9'd145: scale2=5'd12; 9'd146: scale2=5'd12; 9'd147: scale2=5'd12; 9'd148: scale2=5'd14; 9'd149: scale2=5'd14; 9'd150: scale2=5'd14; 9'd151: scale2=5'd14; 9'd152: scale2=5'd15; 9'd153: scale2=5'd15; 9'd154: scale2=5'd15;

9'd155: scale2=5'd15; 9'd156: scale2=5'd15; 9'd157: scale2=5'd15; 9'd158: scale2=5'd15; 9'd159: scale2=5'd15; 9'd159: scale2=5'd0; 9'd160: scale2=5'd0; 9'd161: scale2=5'd15; 9'd162: scale2=5'd14; 9'd163: scale2=5'd15; 9'd164: scale2=5'd15; 9'd165: scale2=5'd14; 9'd166: scale2=5'd14; 9'd167: scale2=5'd15; 9'd168: scale2=5'd15; 9'd169: scale2=5'd14; 9'd170: scale2=5'd14; 9'd171: scale2=5'd15; 9'd172: scale2=5'd15; 9'd173: scale2=5'd17; 9'd174: scale2=5'd20; 9'd175: scale2=5'd19; 9'd176: scale2=5'd19; 9'd177: scale2=5'd19; 9'd178: scale2=5'd19; 9'd179: scale2=5'd19; 9'd180: scale2=5'd19;

9'd181: scale2=5'd19; 9'd182: scale2=5'd19; 9'd183: scale2=5'd19; 9'd184: scale2=5'd19; 9'd185: scale2=5'd19; 9'd186: scale2=5'd19; 9'd187: scale2=5'd0; 9'd188: scale2=5'd19; 9'd189: scale2=5'd18; 9'd190: scale2=5'd17; 9'd191: scale2=5'd18; 9'd192: scale2=5'd18; 9'd193: scale2=5'd18; 9'd194: scale2=5'd18; 9'd195: scale2=5'd18; 9'd196: scale2=5'd18; 9'd197: scale2=5'd19; 9'd198: scale2=5'd19; 9'd199: scale2=5'd16; 9'd200: scale2=5'd16; 9'd201: scale2=5'd16; 9'd202: scale2=5'd16; 9'd203: scale2=5'd0; 9'd204: scale2=5'd18; 9'd205: scale2=5'd17; 9'd206: scale2=5'd16; 9'd207: scale2=5'd17;

9'd208: scale2=5'd17; 9'd209: scale2=5'd17; 9'd210: scale2=5'd17; 9'd211: scale2=5'd16; 9'd212: scale2=5'd16; 9'd213: scale2=5'd16; 9'd214: scale2=5'd15; 9'd215: scale2=5'd15; 9'd216: scale2=5'd15; 9'd217: scale2=5'd15; 9'd218: scale2=5'd15; 9'd219: scale2=5'd15; 9'd220: scale2=5'd15; 9'd221: scale2=5'd15; 9'd222: scale2=5'd15; 9'd223: scale2=5'd17; 9'd224: scale2=5'd17; 9'd225: scale2=5'd17; 9'd226: scale2=5'd16; 9'd227: scale2=5'd16; 9'd228: scale2=5'd16; 9'd229: scale2=5'd17; 9'd230: scale2=5'd17; 9'd231: scale2=5'd18; 9'd232: scale2=5'd18; 9'd233: scale2=5'd18; 9'd234: scale2=5'd17;

9'd235: scale2=5'd17; 9'd236: scale2=5'd17; 9'd237: scale2=5'd15; 9'd238: scale2=5'd15; 9'd239: scale2=5'd16; 9'd240: scale2=5'd16; 9'd241: scale2=5'd16; 9'd242: scale2=5'd16; 9'd243: scale2=5'd16; 9'd244: scale2=5'd16; 9'd245: scale2=5'd16; 9'd246: scale2=5'd16; 9'd247: scale2=5'd0; 9'd248: scale2=5'd0; 9'd249: scale2=5'd12; 9'd250: scale2=5'd12; 9'd251: scale2=5'd0; 9'd252: scale2=5'd13; 9'd253: scale2=5'd15; 9'd254: scale2=5'd15; 9'd255: scale2=5'd0; 9'd256: scale2=5'd17; 9'd257: scale2=5'd17; 9'd258: scale2=5'd0; 9'd259: scale2=5'd17; 9'd260: scale2=5'd17; 9'd261: scale2=5'd16;

9'd262: scale2=5'd15; 9'd263: scale2=5'd17; 9'd264: scale2=5'd16; 9'd265: scale2=5'd15; 9'd266: scale2=5'd17; 9'd267: scale2=5'd17; 9'd268: scale2=5'd16; 9'd269: scale2=5'd15; 9'd270: scale2=5'd0; 9'd271: scale2=5'd15; 9'd272: scale2=5'd0; 9'd273: scale2=5'd15; 9'd274: scale2=5'd13; 9'd275: scale2=5'd15; 9'd276: scale2=5'd16; 9'd277: scale2=5'd17; 9'd278: scale2=5'd0; 9'd279: scale2=5'd17; 9'd280: scale2=5'd17; 9'd281: scale2=5'd17; 9'd282: scale2=5'd17; 9'd283: scale2=5'd0; 9'd284: scale2=5'd12; 9'd285: scale2=5'd13; 9'd286: scale2=5'd15; 9'd287: scale2=5'd0; 9'd288: scale2=5'd0;

9'd289: scale2=5'd15; 9'd290: scale2=5'd13; 9'd291: scale2=5'd15; 9'd292: scale2=5'd16; 9'd293: scale2=5'd17; 9'd294: scale2=5'd16; 9'd295: scale2=5'd17; 9'd296: scale2=5'd12; 9'd297: scale2=5'd12; 9'd298: scale2=5'd12; 9'd299: scale2=5'd0; 9'd300: scale2=5'd12; 9'd301: scale2=5'd13; 9'd302: scale2=5'd15; 9'd303: scale2=5'd0; 9'd304: scale2=5'd0; 9'd305: scale2=5'd15; 9'd306: scale2=5'd13; 9'd307: scale2=5'd15; 9'd308: scale2=5'd16; 9'd309: scale2=5'd17; 9'd310: scale2=5'd16; 9'd311: scale2=5'd17; 9'd312: scale2=5'd0; 9'd313: scale2=5'd16; 9'd314: scale2=5'd16; 9'd315: scale2=5'd15;

9'd316: scale2=5'd15; 9'd317: scale2=5'd16; 9'd318: scale2=5'd16; 9'd319: scale2=5'd15; 9'd320: scale2=5'd15; 9'd321: scale2=5'd15; 9'd322: scale2=5'd15; 9'd323: scale2=5'd15; 9'd324: scale2=5'd15; 9'd325: scale2=5'd15; 9'd326: scale2=5'd15; 9'd327: scale2=5'd15; 9'd328: scale2=5'd15; 9'd329: scale2=5'd15; 9'd330: scale2=5'd15; 9'd331: scale2=5'd15; 9'd332: scale2=5'd15; 9'd333: scale2=5'd15; 9'd334: scale2=5'd15; default:scale2=5'd0; endcase end

always@(posedge clk_8)//真的爱你；begin

if(counter8_1==8'd159) counter8_1=8'd0; else

counter8_1=counter8_1+8'd1; case(counter8_1) 8'd0: scale3=5'd0; 8'd1: scale3=5'd0; 8'd2: scale3=5'd0; 8'd3: scale3=5'd0; 8'd4: scale3=5'd0; 8'd5: scale3=5'd0; 8'd6: scale3=5'd0; 8'd7: scale3=5'd0; 8'd8: scale3=5'd0; 8'd9: scale3=5'd0; 8'd10: scale3=5'd5; 8'd11: scale3=5'd5; 8'd12: scale3=5'd8; 8'd13: scale3=5'd8; 8'd14: scale3=5'd9; 8'd15: scale3=5'd9; 8'd16: scale3=5'd10; 8'd17: scale3=5'd10; 8'd18: scale3=5'd10; 8'd19: scale3=5'd0; 8'd20: scale3=5'd10; 8'd21: scale3=5'd9; 8'd22: scale3=5'd8; 8'd23: scale3=5'd9; 8'd24: scale3=5'd9;

8'd25: scale3=5'd9; 8'd26: scale3=5'd9; 8'd27: scale3=5'd9; 8'd28: scale3=5'd9; 8'd29: scale3=5'd0; 8'd30: scale3=5'd9; 8'd31: scale3=5'd10; 8'd32: scale3=5'd9; 8'd33: scale3=5'd9; 8'd34: scale3=5'd8; 8'd35: scale3=5'd8; 8'd36: scale3=5'd7; 8'd37: scale3=5'd8; 8'd38: scale3=5'd7; 8'd39: scale3=5'd7; 8'd40: scale3=5'd6; 8'd41: scale3=5'd6; 8'd42: scale3=5'd6; 8'd43: scale3=5'd6; 8'd44: scale3=5'd6; 8'd45: scale3=5'd6; 8'd46: scale3=5'd8; 8'd47: scale3=5'd9; 8'd48: scale3=5'd10; 8'd49: scale3=5'd10; 8'd50: scale3=5'd10; 8'd51: scale3=5'd10;

8'd52: scale3=5'd10; 8'd53: scale3=5'd9; 8'd54: scale3=5'd8; 8'd55: scale3=5'd9; 8'd56: scale3=5'd9; 8'd57: scale3=5'd9; 8'd58: scale3=5'd9; 8'd59: scale3=5'd9; 8'd60: scale3=5'd9; 8'd61: scale3=5'd8; 8'd62: scale3=5'd7; 8'd63: scale3=5'd8; 8'd64: scale3=5'd8; 8'd65: scale3=5'd8; 8'd66: scale3=5'd8; 8'd67: scale3=5'd5; 8'd68: scale3=5'd8; 8'd69: scale3=5'd12; 8'd70: scale3=5'd7; 8'd71: scale3=5'd8; 8'd72: scale3=5'd12; 8'd73: scale3=5'd12; 8'd74: scale3=5'd5; 8'd75: scale3=5'd5; 8'd76: scale3=5'd8; 8'd77: scale3=5'd8; 8'd78: scale3=5'd9;

8'd79: scale3=5'd9; 8'd80: scale3=5'd10; 8'd81: scale3=5'd10; 8'd82: scale3=5'd10; 8'd83: scale3=5'd0; 8'd84: scale3=5'd10; 8'd85: scale3=5'd9; 8'd86: scale3=5'd8; 8'd87: scale3=5'd9; 8'd88: scale3=5'd9; 8'd89: scale3=5'd9; 8'd90: scale3=5'd9; 8'd91: scale3=5'd9; 8'd92: scale3=5'd9; 8'd93: scale3=5'd0; 8'd94: scale3=5'd9; 8'd95: scale3=5'd10; 8'd96: scale3=5'd9; 8'd97: scale3=5'd9; 8'd98: scale3=5'd8; 8'd99: scale3=5'd8; 8'd100: scale3=5'd7; 8'd101: scale3=5'd8; 8'd102: scale3=5'd7; 8'd103: scale3=5'd7; 8'd104: scale3=5'd6; 8'd105: scale3=5'd6;

8'd106: scale3=5'd6; 8'd107: scale3=5'd6; 8'd108: scale3=5'd6; 8'd109: scale3=5'd6; 8'd110: scale3=5'd8; 8'd111: scale3=5'd9; 8'd112: scale3=5'd10; 8'd113: scale3=5'd10; 8'd114: scale3=5'd10; 8'd115: scale3=5'd10; 8'd116: scale3=5'd10; 8'd117: scale3=5'd9; 8'd118: scale3=5'd8; 8'd119: scale3=5'd9; 8'd120: scale3=5'd9; 8'd121: scale3=5'd9; 8'd122: scale3=5'd9; 8'd123: scale3=5'd9; 8'd124: scale3=5'd9; 8'd125: scale3=5'd8; 8'd126: scale3=5'd7; 8'd127: scale3=5'd8; 8'd128: scale3=5'd8; 8'd129: scale3=5'd8; 8'd130: scale3=5'd8; 8'd131: scale3=5'd5; 8'd132: scale3=5'd8;

8'd133: scale3=5'd12; 8'd134: scale3=5'd7; 8'd135: scale3=5'd8; 8'd136: scale3=5'd12; default:scale3=5'd0; endcase end

always@(posedge clk_8)//星月神话； 8'd137: scale3=5'd12; 8'd138: scale3=5'd5; 8'd139: scale3=5'd5; 8'd140: scale3=5'd8; 8'd141: scale3=5'd8; 8'd142: scale3=5'd9; 8'd143: scale3=5'd9; 8'd144: scale3=5'd8; 8'd145: scale3=5'd8; 8'd146: scale3=5'd8; 8'd147: scale3=5'd8; 8'd148: scale3=5'd5; 8'd149: scale3=5'd5; 8'd150: scale3=5'd4; 8'd151: scale3=5'd4; 8'd152: scale3=5'd3; 8'd153: scale3=5'd3; 8'd154: scale3=5'd0; 8'd155: scale3=5'd0; 8'd156: scale3=5'd0; 8'd157: scale3=5'd0; 8'd158: scale3=5'd0; 8'd159: scale3=5'd0;

begin

if(counter9_1==9'd479) counter9_1=9'd0; else

counter9_1=counter9_1+9'd1; case(counter9_1) 9'd0: scale4=5'd10; 9'd1: scale4=5'd10; 9'd2: scale4=5'd10; 9'd3: scale4=5'd10; 9'd4: scale4=5'd9; 9'd5: scale4=5'd9; 9'd6: scale4=5'd8; 9'd7: scale4=5'd8; 9'd8: scale4=5'd9; 9'd9: scale4=5'd9; 9'd10: scale4=5'd9; 9'd11: scale4=5'd9; 9'd12: scale4=5'd8; 9'd13: scale4=5'd8; 9'd14: scale4=5'd7; 9'd15: scale4=5'd7; 9'd16: scale4=5'd8;

9'd17: scale4=5'd8; 9'd18: scale4=5'd8; 9'd19: scale4=5'd8; 9'd20: scale4=5'd7; 9'd21: scale4=5'd7; 9'd22: scale4=5'd6; 9'd23: scale4=5'd6; 9'd24: scale4=5'd5; 9'd25: scale4=5'd5; 9'd26: scale4=5'd5; 9'd27: scale4=5'd5; 9'd28: scale4=5'd5; 9'd29: scale4=5'd5; 9'd30: scale4=5'd5; 9'd31: scale4=5'd5; 9'd32: scale4=5'd6; 9'd33: scale4=5'd6; 9'd34: scale4=5'd6; 9'd35: scale4=5'd6; 9'd36: scale4=5'd8; 9'd37: scale4=5'd8; 9'd38: scale4=5'd7; 9'd39: scale4=5'd7; 9'd40: scale4=5'd7; 9'd41: scale4=5'd7; 9'd42: scale4=5'd7; 9'd43: scale4=5'd7;

9'd44: scale4=5'd5; 9'd45: scale4=5'd5; 9'd46: scale4=5'd3; 9'd47: scale4=5'd3; 9'd48: scale4=5'd3; 9'd49: scale4=5'd3; 9'd50: scale4=5'd3; 9'd51: scale4=5'd3; 9'd52: scale4=5'd3; 9'd53: scale4=5'd3; 9'd54: scale4=5'd3; 9'd55: scale4=5'd3; 9'd56: scale4=5'd3; 9'd57: scale4=5'd3; 9'd58: scale4=5'd3; 9'd59: scale4=5'd3; 9'd60: scale4=5'd8; 9'd61: scale4=5'd8; 9'd62: scale4=5'd9; 9'd63: scale4=5'd9; 9'd64: scale4=5'd10; 9'd65: scale4=5'd10; 9'd66: scale4=5'd10; 9'd67: scale4=5'd10; 9'd68: scale4=5'd9; 9'd69: scale4=5'd9; 9'd70: scale4=5'd8;

9'd71: scale4=5'd8; 9'd72: scale4=5'd9; 9'd73: scale4=5'd9; 9'd74: scale4=5'd9; 9'd75: scale4=5'd9; 9'd76: scale4=5'd8; 9'd77: scale4=5'd8; 9'd78: scale4=5'd7; 9'd79: scale4=5'd7; 9'd80: scale4=5'd8; 9'd81: scale4=5'd8; 9'd82: scale4=5'd8; 9'd83: scale4=5'd8; 9'd84: scale4=5'd7; 9'd85: scale4=5'd7; 9'd86: scale4=5'd6; 9'd87: scale4=5'd6; 9'd88: scale4=5'd5; 9'd89: scale4=5'd5; 9'd90: scale4=5'd5; 9'd91: scale4=5'd5; 9'd92: scale4=5'd5; 9'd93: scale4=5'd5; 9'd94: scale4=5'd5; 9'd95: scale4=5'd5; 9'd96: scale4=5'd6; 9'd97: scale4=5'd6;

9'd98: scale4=5'd6; 9'd99: scale4=5'd6; 9'd100: scale4=5'd10; 9'd101: scale4=5'd10; 9'd102: scale4=5'd7; 9'd103: scale4=5'd7; 9'd104: scale4=5'd7; 9'd105: scale4=5'd7; 9'd106: scale4=5'd7; 9'd107: scale4=5'd7; 9'd108: scale4=5'd8; 9'd109: scale4=5'd8; 9'd110: scale4=5'd9; 9'd111: scale4=5'd9; 9'd112: scale4=5'd8; 9'd113: scale4=5'd8; 9'd114: scale4=5'd8; 9'd115: scale4=5'd8; 9'd116: scale4=5'd8; 9'd117: scale4=5'd8; 9'd118: scale4=5'd8; 9'd119: scale4=5'd8; 9'd120: scale4=5'd8; 9'd121: scale4=5'd8; 9'd122: scale4=5'd8; 9'd123: scale4=5'd8; 9'd124: scale4=5'd8;

9'd125: scale4=5'd8; 9'd126: scale4=5'd8; 9'd127: scale4=5'd8; 9'd128: scale4=5'd6; 9'd129: scale4=5'd6; 9'd130: scale4=5'd6; 9'd131: scale4=5'd6; 9'd132: scale4=5'd6; 9'd133: scale4=5'd6; 9'd134: scale4=5'd8; 9'd135: scale4=5'd8; 9'd136: scale4=5'd7; 9'd137: scale4=5'd7; 9'd138: scale4=5'd7; 9'd139: scale4=5'd7; 9'd140: scale4=5'd8; 9'd141: scale4=5'd8; 9'd142: scale4=5'd9; 9'd143: scale4=5'd9; 9'd144: scale4=5'd10; 9'd145: scale4=5'd10; 9'd146: scale4=5'd10; 9'd147: scale4=5'd10; 9'd148: scale4=5'd10; 9'd149: scale4=5'd10; 9'd150: scale4=5'd12; 9'd151: scale4=5'd12;

9'd152: scale4=5'd10; 9'd153: scale4=5'd10; 9'd154: scale4=5'd10; 9'd155: scale4=5'd10; 9'd156: scale4=5'd10; 9'd157: scale4=5'd10; 9'd158: scale4=5'd10; 9'd159: scale4=5'd10; 9'd160: scale4=5'd6; 9'd161: scale4=5'd6; 9'd162: scale4=5'd6; 9'd163: scale4=5'd6; 9'd164: scale4=5'd6; 9'd165: scale4=5'd6; 9'd166: scale4=5'd8; 9'd167: scale4=5'd8; 9'd168: scale4=5'd7; 9'd169: scale4=5'd7; 9'd170: scale4=5'd7; 9'd171: scale4=5'd7; 9'd172: scale4=5'd8; 9'd173: scale4=5'd8; 9'd174: scale4=5'd9; 9'd175: scale4=5'd9; 9'd176: scale4=5'd8; 9'd177: scale4=5'd8; 9'd178: scale4=5'd8;

9'd179: scale4=5'd8; 9'd180: scale4=5'd8; 9'd181: scale4=5'd8; 9'd182: scale4=5'd8; 9'd183: scale4=5'd8; 9'd184: scale4=5'd8; 9'd185: scale4=5'd8; 9'd186: scale4=5'd8; 9'd187: scale4=5'd8; 9'd188: scale4=5'd8; 9'd189: scale4=5'd8; 9'd190: scale4=5'd9; 9'd191: scale4=5'd9; 9'd192: scale4=5'd10; 9'd193: scale4=5'd10; 9'd194: scale4=5'd10; 9'd195: scale4=5'd10; 9'd196: scale4=5'd9; 9'd197: scale4=5'd9; 9'd198: scale4=5'd8; 9'd199: scale4=5'd8; 9'd200: scale4=5'd9; 9'd201: scale4=5'd9; 9'd202: scale4=5'd9; 9'd203: scale4=5'd9; 9'd204: scale4=5'd8; 9'd205: scale4=5'd8;

9'd206: scale4=5'd7; 9'd207: scale4=5'd7; 9'd208: scale4=5'd8; 9'd209: scale4=5'd8; 9'd210: scale4=5'd8; 9'd211: scale4=5'd8; 9'd212: scale4=5'd7; 9'd213: scale4=5'd7; 9'd214: scale4=5'd6; 9'd215: scale4=5'd6; 9'd216: scale4=5'd5; 9'd217: scale4=5'd5; 9'd218: scale4=5'd5; 9'd219: scale4=5'd5; 9'd220: scale4=5'd5; 9'd221: scale4=5'd5; 9'd222: scale4=5'd5; 9'd223: scale4=5'd5; 9'd224: scale4=5'd6; 9'd225: scale4=5'd6; 9'd226: scale4=5'd6; 9'd227: scale4=5'd6; 9'd228: scale4=5'd8; 9'd229: scale4=5'd8; 9'd230: scale4=5'd7; 9'd231: scale4=5'd7; 9'd232: scale4=5'd7;

9'd233: scale4=5'd7; 9'd234: scale4=5'd7; 9'd235: scale4=5'd7; 9'd236: scale4=5'd8; 9'd237: scale4=5'd8; 9'd238: scale4=5'd9; 9'd239: scale4=5'd9; 9'd240: scale4=5'd10; 9'd241: scale4=5'd10; 9'd242: scale4=5'd10; 9'd243: scale4=5'd10; 9'd244: scale4=5'd10; 9'd245: scale4=5'd10; 9'd246: scale4=5'd9; 9'd247: scale4=5'd9; 9'd248: scale4=5'd9; 9'd249: scale4=5'd9; 9'd250: scale4=5'd9; 9'd251: scale4=5'd9; 9'd252: scale4=5'd8; 9'd253: scale4=5'd8; 9'd254: scale4=5'd9; 9'd255: scale4=5'd9; 9'd256: scale4=5'd10; 9'd257: scale4=5'd10; 9'd258: scale4=5'd10; 9'd259: scale4=5'd10;

9'd260: scale4=5'd9; 9'd261: scale4=5'd9; 9'd262: scale4=5'd8; 9'd263: scale4=5'd8; 9'd264: scale4=5'd9; 9'd265: scale4=5'd9; 9'd266: scale4=5'd9; 9'd267: scale4=5'd9; 9'd268: scale4=5'd8; 9'd269: scale4=5'd8; 9'd270: scale4=5'd7; 9'd271: scale4=5'd7; 9'd272: scale4=5'd8; 9'd273: scale4=5'd8; 9'd274: scale4=5'd8; 9'd275: scale4=5'd8; 9'd276: scale4=5'd7; 9'd277: scale4=5'd7; 9'd278: scale4=5'd6; 9'd279: scale4=5'd6; 9'd280: scale4=5'd5; 9'd281: scale4=5'd5; 9'd282: scale4=5'd5; 9'd283: scale4=5'd5; 9'd284: scale4=5'd8; 9'd285: scale4=5'd8; 9'd286: scale4=5'd5;

9'd287: scale4=5'd5; 9'd288: scale4=5'd6; 9'd289: scale4=5'd6; 9'd290: scale4=5'd6; 9'd291: scale4=5'd6; 9'd292: scale4=5'd10; 9'd293: scale4=5'd10; 9'd294: scale4=5'd7; 9'd295: scale4=5'd7; 9'd296: scale4=5'd7; 9'd297: scale4=5'd7; 9'd298: scale4=5'd7; 9'd299: scale4=5'd7; 9'd300: scale4=5'd8; 9'd301: scale4=5'd8; 9'd302: scale4=5'd9; 9'd303: scale4=5'd9; 9'd304: scale4=5'd8; 9'd305: scale4=5'd8; 9'd306: scale4=5'd8; 9'd307: scale4=5'd8; 9'd308: scale4=5'd8; 9'd309: scale4=5'd8; 9'd310: scale4=5'd8; 9'd311: scale4=5'd8; 9'd312: scale4=5'd8; 9'd313: scale4=5'd8;

9'd314: scale4=5'd8; 9'd315: scale4=5'd8; 9'd316: scale4=5'd10; 9'd317: scale4=5'd10; 9'd318: scale4=5'd12; 9'd319: scale4=5'd12; 9'd320: scale4=5'd13; 9'd321: scale4=5'd13; 9'd322: scale4=5'd13; 9'd323: scale4=5'd13; 9'd324: scale4=5'd13; 9'd325: scale4=5'd13; 9'd326: scale4=5'd13; 9'd327: scale4=5'd13; 9'd328: scale4=5'd12; 9'd329: scale4=5'd12; 9'd330: scale4=5'd9; 9'd331: scale4=5'd9; 9'd332: scale4=5'd9; 9'd333: scale4=5'd9; 9'd334: scale4=5'd12; 9'd335: scale4=5'd12; 9'd336: scale4=5'd10; 9'd337: scale4=5'd10; 9'd338: scale4=5'd8; 9'd339: scale4=5'd8; 9'd340: scale4=5'd8;

9'd341: scale4=5'd8; 9'd342: scale4=5'd6; 9'd343: scale4=5'd6; 9'd344: scale4=5'd6; 9'd345: scale4=5'd6; 9'd346: scale4=5'd6; 9'd347: scale4=5'd6; 9'd348: scale4=5'd6; 9'd349: scale4=5'd6; 9'd350: scale4=5'd7; 9'd351: scale4=5'd7; 9'd352: scale4=5'd8; 9'd353: scale4=5'd8; 9'd354: scale4=5'd8; 9'd355: scale4=5'd8; 9'd356: scale4=5'd10; 9'd357: scale4=5'd10; 9'd358: scale4=5'd9; 9'd359: scale4=5'd9; 9'd360: scale4=5'd9; 9'd361: scale4=5'd9; 9'd362: scale4=5'd9; 9'd363: scale4=5'd9; 9'd364: scale4=5'd12; 9'd365: scale4=5'd12; 9'd366: scale4=5'd10; 9'd367: scale4=5'd10;

9'd368: scale4=5'd10; 9'd369: scale4=5'd10; 9'd370: scale4=5'd10; 9'd371: scale4=5'd10; 9'd372: scale4=5'd10; 9'd373: scale4=5'd10; 9'd374: scale4=5'd10; 9'd375: scale4=5'd10; 9'd376: scale4=5'd10; 9'd377: scale4=5'd10; 9'd378: scale4=5'd10; 9'd379: scale4=5'd10; 9'd380: scale4=5'd10; 9'd381: scale4=5'd10; 9'd382: scale4=5'd12; 9'd383: scale4=5'd12; 9'd384: scale4=5'd13; 9'd385: scale4=5'd13; 9'd386: scale4=5'd13; 9'd387: scale4=5'd13; 9'd388: scale4=5'd13; 9'd389: scale4=5'd13; 9'd390: scale4=5'd13; 9'd391: scale4=5'd13; 9'd392: scale4=5'd12; 9'd393: scale4=5'd12; 9'd394: scale4=5'd9;

9'd395: scale4=5'd9; 9'd396: scale4=5'd9; 9'd397: scale4=5'd9; 9'd398: scale4=5'd12; 9'd399: scale4=5'd12; 9'd400: scale4=5'd10; 9'd401: scale4=5'd10; 9'd402: scale4=5'd8; 9'd403: scale4=5'd8; 9'd404: scale4=5'd8; 9'd405: scale4=5'd8; 9'd406: scale4=5'd6; 9'd407: scale4=5'd6; 9'd408: scale4=5'd6; 9'd409: scale4=5'd6; 9'd410: scale4=5'd6; 9'd411: scale4=5'd6; 9'd412: scale4=5'd10; 9'd413: scale4=5'd10; 9'd414: scale4=5'd9; 9'd435: scale4=5'd6; 9'd436: scale4=5'd6; 9'd437: scale4=5'd6; 9'd438: scale4=5'd6; 9'd439: scale4=5'd6; 9'd440: scale4=5'd6; 9'd441: scale4=5'd6;

9'd415: scale4=5'd9; 9'd416: scale4=5'd8; 9'd417: scale4=5'd8; 9'd418: scale4=5'd8; 9'd419: scale4=5'd8; 9'd420: scale4=5'd10; 9'd421: scale4=5'd10; 9'd422: scale4=5'd9; 9'd423: scale4=5'd9; 9'd424: scale4=5'd9; 9'd425: scale4=5'd9; 9'd426: scale4=5'd9; 9'd427: scale4=5'd9; 9'd428: scale4=5'd10; 9'd429: scale4=5'd10; 9'd430: scale4=5'd6; 9'd431: scale4=5'd6; 9'd432: scale4=5'd6; 9'd433: scale4=5'd6; 9'd434: scale4=5'd6; 9'd442: scale4=5'd6; 9'd443: scale4=5'd6; 9'd444: scale4=5'd0; 9'd445: scale4=5'd0; 9'd446: scale4=5'd0; 9'd447: scale4=5'd0; 9'd448: scale4=5'd6;

9'd449: scale4=5'd6; 9'd450: scale4=5'd6; 9'd451: scale4=5'd6; 9'd452: scale4=5'd6; 9'd453: scale4=5'd6; 9'd454: scale4=5'd6; 9'd455: scale4=5'd6; 9'd456: scale4=5'd6; 9'd457: scale4=5'd6; 9'd458: scale4=5'd6; 9'd459: scale4=5'd6; 9'd460: scale4=5'd10; 9'd461: scale4=5'd10; 9'd462: scale4=5'd12; 9'd463: scale4=5'd12; 9'd464: scale4=5'd6; 9'd465: scale4=5'd6; 9'd466: scale4=5'd6; 9'd467: scale4=5'd6; 9'd468: scale4=5'd6; 9'd469: scale4=5'd6; 9'd470: scale4=5'd6; 9'd471: scale4=5'd6; 9'd472: scale4=5'd6; 9'd473: scale4=5'd6; 9'd474: scale4=5'd6; 9'd475: scale4=5'd6;

9'd476: scale4=5'd13; 9'd477: scale4=5'd13; 9'd478: scale4=5'd12; 9'd479: scale4=5'd12; default:scale4=5'd0; endcase end endmodule

module play(key,prenum_p);//弹奏模块； input [13:0]key; output [13:0]prenum_p; wire [13:0]key; reg [13:0]prenum _p;

always@(key) begin case(key)

14'd0:prenum_p=14'd16383; 14'd8192:prenum_p=14'd10647; 14'd4096:prenum_p=14'd11272; 14'd2028:prenum_p=14'd11831; 14'd1024:prenum_p=14'd12074; 14'd512:prenum_p=14'd12556; 14'd256:prenum_p=14'd12974; 14'd128:prenum_p=14'd13346; 14'd64:prenum_p=14'd13516;

14'd32:prenum_p=14'd13829; 14'd16:prenum_p=14'd14109; 14'd8:prenum_p=14'd14235; 14'd4:prenum_p=14'd14470; 14'd2:prenum_p=14'd14678; 14'd1:prenum_p=14'd14846; default :prenum_p=14'd16383; endcase end endmodule

modulechoose_prenum(prenum_s, prenum_p,prenum,sing_play);//选择预置数；

input [13:0]prenum_s,prenum_p; inputsing_play; output [13:0]prenum;

wire [13:0]prenum_s,prenum_p; reg [13:0]prenum; wiresing_play; always@(sing_play) begin

if(sing_play==1'b1) prenum=prenum_s; else

prenum=prenum_p; end

endmodule

module show(clk_sing,clk_6m,prenum, led,code_low,code_med,code_high); //显示模块； input clk_sing,clk_6m; input [13:0]prenum; output [6:0]led;

outputcode_low,code_med,code_high; wire clk_sing,clk_6m; wire [13:0]prenum; reg [6:0]led;

regcode_low,code_med,code_high; always@(posedgeclk_sing) begin case(prenum)

14'd16383 : led=7'b0000000;//休止符； 14'd4915 : led=7'b0110000;//低音1； 14'd6168 : led=7'b1101101;//低音2； 14'd7281 : led=7'b1111001;//低音3； 14'd7792 : led=7'b0110011;//低音4； 14'd8730 : led=7'b1011011;//低音5； 14'd9565 : led=7'b1011111;//低音6； 14'd10301 : led=7'b1110000;//低音7； 14'd10647 : led=7'b0110000;//中音1； 14'd11272 : led=7'b1101101;//中音2； 14'd11831 : led=7'b1111001;//中音3；

14'd12074 : led=7'b0110011;//中音4； 14'd12556 : led=7'b1011011;//中音5； 14'd12974 : led=7'b1011111;//中音6； 14'd13346 : led=7'b1110000;//中音7； 14'd13516 : led=7'b0110000;//高音1； 14'd13829 : led=7'b1101101;//高音2； 14'd14109 : led=7'b1111001;//高音3； 14'd14235 : led=7'b0110011;//高音4； 14'd14470 : led=7'b1011011;//高音5； 14'd14678 : led=7'b1011111;//高音6； 14'd14846 : led=7'b1110000;//高音7； default : led=7'd0; endcase end

always@(posedgeclk_sing) begin

if(prenum>=14'd4195&&prenum<= 14'd10301||prenum==14'd16383) begin

code_low=1'b1; code_med=1'b0; code_high='b0; end

else if(prenum>=14'd10647&&prenum<= 14'd13346) begin wire clk_16;

code_low=1'b0; code_med=1'b1; code_high='b0; end

else if(prenum>=14'd13516&&prenum<= 14'd14846) begin

code_low=1'b0; code_med=1'b0; code_high='b1; end end endmodule

moduleelectronic_organ(clk_6m,clk_64, key,sing_play,fout,led,code_low,code_med, code_high);

input clk_6m,clk_64,sing_play; input [13:0]key;

outputfout,code_low,code_med, code_high; output [6:0]led; wire [13:0]key; wiresing_play; wire clk_6m; wire clk_64;

wire clk_8;

wire clk_4;

wireclk_sing;

wirefout,code_low,code_med,code_high;

wire [13:0]prenum,prenum_s,prenum_p;

wiretofout;

wire [4:0]scale;

change_fenpinbifpb(clk_6m,prenum,tofout);

er_fen_pinefp(tofout,fout);

fenpinfp(clk_64,clk_16,clk_8,clk_4);

get_prenumgpn(clk_sing,scale,prenum_s);

premusic pm(clk_16,clk_8,clk_4,key,clk_sing,scale);

play p(key,prenum_p);

choose_prenumcp(prenum_s,prenum_p,prenum,sing_play);

show s(clk_sing,clk_6m,prenum,led,code_low,code_med,code_high); endmodule

2.各层次原理图（1）加计数器

数字电子技术综合实验报告简易电子琴

（2）二分频器

数字电子技术综合实验报告简易电子琴

（3）预置数选择器

数字电子技术综合实验报告简易电子琴

（4）节拍发生器

数字电子技术综合实验报告简易电子琴

（5）预置数获得器

6）存储器

数字电子技术综合实验报告简易电子琴

（

数字电子技术综合实验报告简易电子琴

（7）弹奏模块

数字电子技术综合实验报告简易电子琴

（8）显示模块

数字电子技术综合实验报告简易电子琴

3.编译报告

数字电子技术综合实验报告简易电子琴

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