逐句解释代码：always @(posedge clkr) begin current=next; case(current) set0: begin rs<=0; dat<=8'h30; next<=set1; end set1: begin rs<=0; dat<=8'h0c; next<=set2; end set2: begin rs<=0; dat<=8'h6; next<=set3; end set3: begin rs<=0; dat<=8'h1; next<=dat0; end dat0: begin rs<=1; dat<="H"; next<=dat1; end dat1: begin rs<=1; dat<="E"; next<=dat2; end dat2: begin rs<=1; dat<="L"; next<=dat3; end dat3: begin rs<=1; dat<="L"; next<=dat4; end dat4: begin rs<=1; dat<="O"; next<=dat5; end dat5: begin rs<=1; dat<=" "; next<=dat6; end dat6: begin rs<=1; dat<="W"; next<=dat7; end dat7: begin rs<=1; dat<="O"; next<=dat8; end dat8: begin rs<=1; dat<="R"; next<=dat9; end dat9: begin rs<=1; dat<="L"; next<=dat10; end dat10: begin rs<=1; dat<="D"; next<=dat11; end dat11: begin rs<=1; dat<="!"; next<=nul; end nul: begin rs<=0; dat<=8'h00; if(cnt!=2'h2) begin e<=0;next<=set0;cnt<=cnt+1; end else begin next<=nul; e<=1; end end default: next=set0; endcase end assign en=clkr|e; assign rw=0;

占空比1：3的4分频分频器FPGA设计verilog源码quartus工程文件.zip

always@(posedge clk_50M) //在每个时钟的上升沿触发 begin if(cnt==3'b011) //当cnt为3的时候，执行以下程序 begin f_13<=1'b1; //f_13置1 cnt<=3'b0; //cnt清0 end else begin cnt<=cnt+...

LCD1602显示英文字符实验FPGA（EP4CE6）Verilog例程quartus11.0工程源码.zip

set0: begin rs<=0; dat<=8'h30; next<=set1; end set1: begin rs<=0; dat<=8'h0c; next<=set2; end set2: begin rs<=0; dat<=8'h6; next<=set3; end set3: begin rs<=0; dat<=8'h1; next<=dat0; end dat0:...

module yima (clkout_2ms,seg,AN,shi,fen,miao,k,dp,D,shi1,T); input clkout_2ms,k,T; input [5:0]miao; input [5:0]fen; input [4:0]shi,shi1; output reg [6:0] seg; output reg [3:0] AN; reg [1:0]cnt_clkout; output reg dp,D; reg [3:0]Q; reg [3:0]q1,q2,q3,q4; always@(posedge clkout_2ms) cnt_clkout<=cnt_clkout+1; always @ (posedge clkout_2ms) begin dp<=0; if(k==0) begin case(cnt_clkout) 0:begin AN<=4'b0111; if(T==0) q1 <= shi/10; else q1 <= shi1/10; end 1:begin AN<=4'b1011; dp<=1; if(T==0) q2 <= shi%10; else q2 <= shi1%10; end 2:begin AN <= 4'b1101; q3 <= fen/10; end 3:begin AN <= 4'b1110; q4 <= fen%10; end endcase end else begin case(cnt_clkout) 0:begin AN<=4'b1111; q1 <= 0; end 1:begin AN<=4'b1111; q2 <= 0; dp<=1; end 2:begin AN <= 4'b1101; q3 <= miao/10; end 3:begin AN <= 4'b1110; q4 <= miao%10; end endcase end end always@(Q) begin case(cnt_clkout) 3:Q<=q4; 2:Q<=q3; 1:Q<=q2; 0:Q<=q1; endcase end always@(posedge clkout_2ms) case(Q) 0:seg<= 7'b1111110;//0 1:seg<= 7'b0110000;//1 2:seg<= 7'b1101101;//2 3:seg<= 7'b1111001;//3 4:seg<= 7'b0110011;//4 5:seg<= 7'b1011011;//5 6:seg<= 7'b1011111;//6 7:seg<= 7'b1110000;//7 8:seg<= 7'b1111111;//8 9:seg<= 7'b1111011;//9 default: seg<=7'b1111110; endcase always@(posedge clkout_2ms) if(fen==0&&miao<=6) D <= D + 1; endmodule

这是一个 Verilog HDL 代码，实现了一个数字时钟...- 当 fen=0 且 miao<=6 时，表示一天的时间已经过去，将 D 的值加一。这个 Verilog HDL 代码实现了一个数字时钟的基本功能，可以用于 FPGA 或其他数字电路的实现。

module state_6_8(x,z,clk,rst,state); input x,clk,rst; output z; output[2:0] state; reg z; reg [2:0] current_state,next_state; parameter s0=3'd0, s1=3'd1, s2=3'd2, s3=3'd3, s4=3'd4;//标识符 assign state=current_state; always@(posedge clk or posedge rst) begin if(rst) begin current_state<=s0; end else current_state<=next_state; end //主控时序逻辑描述 always@(current_state or x) begin casex(current_state) s0:if(x==1'b1) begin next_state<=s1; //次态逻辑和输出 z<=0; end else begin next_state<=s0; //次态逻辑和输出 z<=0; end s1:if(x==1'b0) begin next_state<=s2; //次态逻辑和输出 z<=0; end else begin next_state<=s1; z<=0; end s2:if(x==1'b0) begin next_state<=s3; z<=0; end else begin next_state<=s1; z<=0; end s3:if(x==1'b1) begin next_state<=s4; z<=1; end else begin next_state<=s0; z<=0; end /s4:if(x==1'b1) begin next_state<=s1; z<=0; end else begin next_state<=s0; z<=0; end/ s4:if(x==1'b1) begin next_state<=s1; z<=0; end else begin next_state<=s2; z<=0; end default next_state<=s0; endcase end endmodule 修改为11011序列检测电路代码

current_state <= next_state; end end always @(current_state or x) begin case (current_state) s0: if (x == 1'b1) begin next_state <= s1; z <= 0; end else begin next_state <= s0; z <= 0; end...

module key_filter2 (clk, rst_n, key_in, pose_flag, nege_flag); input clk, rst_n; input key_in; output pose_flag, nege_flag; reg key_out; reg [18:0] cnt; parameter T = 50_0000; reg state; reg key_reg; always @ (posedge clk) key_reg <= key_in; always @ (posedge clk, negedge rst_n) begin if(!rst_n) begin cnt <= 0; state <= 0; key_out <= 1; end else case(state) 0 : begin if(key_reg == 0) if(cnt < T - 1) begin cnt <= cnt + 1; state <= 0; key_out <= 1; end else begin cnt <= 0; key_out <= 0; state <= 1; end else begin cnt <= 0; state <= 0; key_out <= 1; end end 1 : begin if(key_reg == 1) if(cnt < T - 1) begin cnt <= cnt + 1; state <= 1; key_out <= 0; end else begin cnt <= 0; key_out <= 1; state <= 0; end else begin cnt <= 0; state <= 1; key_out <= 0; end end default : state <= 0; endcase end reg key_buff1, key_buff2; always @ (posedge clk, negedge rst_n) begin if(!rst_n) begin key_buff1 <= 1; key_buff2 <= 1; end else begin key_buff1 <= key_out; key_buff2 <= key_buff1; end end assign pose_flag = (~key_buff2) & key_buff1; assign nege_flag = (~key_buff1) & key_buff2; endmodule

这是一个 Verilog 代码模块，它实现了一个按键去抖动的模块。它包含一个时钟输入 clk、复位信号输入 rst_n、键值输入 key_in，以及两个输出信号 pose_flag 和 nege_flag。这个模块通过对键值进行计数，来消除按键...

请帮我纠正以下代码的错误：module pmod_oled_spi( input wire clk, input wire rst, input wire cs, input wire mosi, input wire sclk ); reg [7:0] data_out; reg [7:0] cnt; reg [1:0] state; parameter IDLE = 2'b00; parameter START = 2'b01; parameter WRITE = 2'b10; always @(posedge clk) begin if (rst) begin state <= IDLE; cnt <= 0; data_out <= 0; end else case (state) IDLE: begin if (cnt == 0) begin state <= START; cnt <= 1; end else cnt <= cnt; end START: begin if (cs == 1'b0) begin state <= WRITE; cnt <= 1; end else cnt <= cnt; end WRITE: begin if (cnt < 9) begin mosi <= data_out[7-cnt]; sclk <= 1'b0; cnt <= cnt + 1; end else begin mosi <= 1'b0; sclk <= 1'b1; state <= IDLE; cnt <= 0; end end default: cnt <= 0; endcase end always @(posedge clk) begin if (rst) begin data_out <= 0; end else if (state == WRITE) begin data_out <= data_out << 1 | 1'b0; // TODO: 根据OLED通信协议修改 end end endmodule

在这个代码中，有一个错误是在 always @(posedge clk) 的过程块中同时对 data_out 进行了赋值，这个赋值语句是冲突的。因为过程块中的语句是并行执行的，如果同时对 data_out 进行赋值，那么它的值会变得不可预测。...

逐步分析以下代码timescale 1ns/100ps module seg7_disp4(clk,reset_n,oSEG,oCOM,digitals); input clk; input reset_n; output [7:0] oSEG; output [3:0] oCOM; input [15:0] digitals; reg [3:0] oCOM; parameter IDLE=5'b00001; parameter DISP0=5'b00010; parameter DISP1=5'b00100; parameter DISP2=5'b01000; parameter DISP3=5'b10000; reg [4:0] state,nxstate; reg [3:0] tmp_reg; always@(posedge clk or negedge reset_n) begin if(!reset_n) state <= IDLE; else state <= nxstate; end //next state always@(state) begin case(state) IDLE: nxstate <= DISP0; DISP0: nxstate <= DISP1; DISP1: nxstate <= DISP2; DISP2: nxstate <= DISP3; DISP3: nxstate <= DISP0; default: nxstate <= IDLE; endcase end //output always@(state or digitals) begin case(state) DISP0: begin tmp_reg <= digitals[3:0]; oCOM <=4'b1110; end DISP1: begin tmp_reg <= digitals[7:4]; oCOM <=4'b1101; end DISP2: begin tmp_reg <= digitals[11:8]; oCOM <=4'b1011; end DISP3: begin tmp_reg <= digitals[15:12]; oCOM <=4'b0111; end default: begin tmp_reg <= 4'b1111; oCOM <=4'b1111; end endcase end seg7_decode seg7_decode_inst(tmp_reg,oSEG); endmodule

这是一个Verilog HDL的...在 always 块中，根据状态寄存器的状态不同，将数字信号 digitals 拆分为四个四位数，分别显示在四个七段数码管上。最后，通过 seg7_decode 模块将每个四位数转换为对应的七段数码管显示信号。

为下列代码添加注释：ADC0809 module ADC0809(D,CLK,EOC,RST,ALE,START,OE,ADDA,ADDB,ADDC,Q,LOCK_T,CLK_OUT); input [7:0]D; input CLK,RST; input EOC; output reg CLK_OUT; output ALE; output START,OE; output ADDA,ADDB,ADDC,LOCK_T; output [7:0]Q; reg ALE,START,OE; parameter s0=0,s1=1,s2=2,s3=3,s4=4; reg[4:0]cs,ns; reg[7:0]REGL; reg[5:0]CLKIn; reg LOCK; always @(posedge CLK) if (CLKIn>10) begin CLK_OUT=~CLK_OUT; CLKIn=0; end else CLKIn=CLKIn+1; always @(cs or EOC)begin case(cs) s0:begin ALE=0; START=0;OE=0; LOCK=0; ns <=s1;end s1:begin ALE=1; START=1;OE=0; LOCK=0; ns <=s2;end s2:begin ALE=0; START=0 ;OE=0; LOCK=0; if(EOC==1'b1)ns =s3; else ns =s2;end s3:begin ALE=0; START=0; OE=1;LOCK=0; ns =s4;end s4:begin ALE=0; START=0 ;OE=1;LOCK=1; ns <=s0; end default :begin ALE=0; START=0 ;OE=0;LOCK=0; ns =s0; end endcase end always@(posedge CLK or negedge RST) begin if(!RST)cs<=s0; else cs <=ns;end always @(posedge LOCK) if (LOCK)REGL <=D; assign ADDA=0; assign ADDB=0; assign ADDC=0; assign Q=REGL; assign LOCK_T=LOCK; endmodule

s0:begin ALE=0; START=0; OE=0; LOCK=0; ns <=s1; end s1:begin ALE=1; START=1; OE=0; LOCK=0; ns <=s2; end s2:begin ALE=0; START=0; OE=0; LOCK=0; if(EOC==1'b1) ns =s3; else ns =s2;...

问题在哪？always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin bps_start_r <= 1'bz;//波特率时钟启动信号 tx_en <= 1'b0; tx_data <= 1'b0; count <= 1'b0; end else if(start) begin //接收数据完毕，准备把接收到的数据发回去 bps_start_r <= 1'b1;//波特率时钟状态为1 case(count) 1'b00:begin tx_data <= data[2'd0]; count <= 1'b01; end 1'b01:begin tx_data <= data[2'd1]; count <= 1'b10; end 1'b10:begin//不做这个？ tx_data <= data[2'd2]; count <= 1'b00; end default:count <= 1'b00; endcase tx_en <= 1'b1; //进入发送数据状态中 end else if(num==8'd11) begin //数据发送完成，复位 bps_start_r <= 1'b0; tx_en <= 1'b0; end end assign bps_start = bps_start_r; //--------------------------------------------------------- reg rs232_tx_r; always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin num <= 8'd0; rs232_tx_r <= 1'b1; end else if(tx_en)//发送数据使能信号 begin if(clk_bps) begin num <= num+1'b1; case (num) 8'd0: rs232_tx_r <= 1'b0; //发送起始位 8'd1: rs232_tx_r <= tx_data[0] ; //发送第0bit 8'd2: rs232_tx_r <= tx_data[1] ; //发送第1bit 8'd3: rs232_tx_r <= tx_data[2] ; //发送第2bit 8'd4: rs232_tx_r <= tx_data[3] ; //发送第3bit 8'd5: rs232_tx_r <= tx_data[4] ; //发送第4bit 8'd6: rs232_tx_r <= tx_data[5] ; //发送第5bit 8'd7: rs232_tx_r <= tx_data[6] ; //发送第6bit 8'd8: rs232_tx_r <= tx_data[7] ; //发送第7bit 8'd9: rs232_tx_r <= 1'b1; //发送结束位 default: rs232_tx_r <= 1'b1; endcase end else if(num==8'd11) num <= 8'd0; //复位 end end assign rs232_tx = rs232_tx_r;

2'd0: tx_data <= data[0]; 2'd1: tx_data <= data[1]; 2'd2: tx_data <= data[2]; default: tx_data <= 1'b0; endcase count <= count + 1'b1; if (count == 3'd3) begin count <= 1'b0; tx_en <= 1'b1; ...

module sequence_detector( input clk, input reset, input data, output reg detected ); parameter S0 = 2'b00, S1 = 2'b01, S2 = 2'b10, S3 = 2'b11; reg [1:0] state; always @(posedge clk) begin if (reset) begin state <= S0; detected <= 0; end else begin case (state) S0: begin if (data == 1'b1) state <= S1; end S1: begin if (data == 1'b1) state <= S2; else state <= S0; end S2: begin if (data == 1'b0) state <= S3; else state <= S0; end S3: begin detected <= 1; state <= S0; end endcase end end endmodule用另一种方法实现以上代码所实现的功能

always @(posedge clk) begin if (reset) begin state <= S0; detected <= 0; end else begin state <= {state[0], data}; if (state == {S1, 1'b0}) begin state <= S0; detected <= 1; end end end ...

module traffic_light( input rst, input clk_a, input button, output [2:0]LED ); wire clk_a; wire button; reg [2:0]LED; reg [1:0]state; reg clk; reg [21:0]clk_count; reg [6:0]green_count; reg [8:0]red_count; always @(posedge clk_a) begin if(rst) begin clk_count <= 22'd0; clk <= 1'b0; end else begin //3125000 if(clk_count >= 22'b10_1111_1010_1111_0000_0111) begin clk_count <= 22'd0; clk <= ~clk; end else begin clk_count <= clk_count + 1; clk <= clk; end end end always @(posedge clk) begin if(rst) begin state <= 0; end else begin case(state) 2'd0 : begin if(!button) state <= 2'd1; else state <= 2'd0; end 2'd1 : begin if(green_count == 7'b111_1110) //127 state <= 2'd2; else state <= 2'd1; end 2'd2 : begin if(red_count == 9'b1_1101_1110) //479 state <= 2'd0; else state <= 2'd2; end endcase end end always@(posedge clk) begin if(rst) begin LED <= 3'b000; green_count <= 6'd0; red_count <= 9'd0; end else begin case(state) 2'd0 : begin LED <= ~LED; green_count <= 6'd0; red_count <= 9'd0; end 2'd1: begin green_count <= green_count + 1; LED <= ~green_count[6:4]; end 2'd2:begin LED <= ~LED; red_count <= red_count + 1; end endcase end end endmodule

这是一个 Verilog 代码模块，实现了一个红绿灯控制器。具体来说，当按钮被按下后，红灯亮，持续一段时间后变为绿灯亮，再经过一段时间后变为红灯亮，周而复始。如果需要进一步了解代码作用和实现细节，建议查阅相关...

//切换数码管段选 always @(posedge clk or negedge rst_n) begin if (!rst_n) begin seg_flag<=0; end else begin case (sel) 6'b111_110: begin seg_flag<=dout_time[19:18]; dot<=1'b1;end //小时十位 6'b111_101: begin seg_flag<=dout_time[17:14]; dot<=1'b0;end //小时个位 6'b111_011: begin seg_flag<=dout_time[13:11]; dot<=1'b1;end //分钟十位 6'b110_111: begin seg_flag<=dout_time[10:7]; dot<=1'b0;end //分钟个位 6'b101_111: begin seg_flag<=dout_time[6:4]; dot<=1'b1;end //秒十位 6'b011_111: begin seg_flag<=dout_time[3:0]; dot<=1'b1;end //秒个位 default :seg_flag<=0; endcase end end

这段代码是一个 Verilog HDL 的模块，用于控制数码管的显示。模块的输入包括时钟信号 clk、复位信号 rst_n、选择信号 sel，和时钟周期内的数据 dout_time。其中，sel 用于选择需要显示的数据，dout_time 包含了需要...

module counter( input clk, input reset, output reg [3:0] count, output reg overflow ); reg [3:0] state; always @ (posedge clk) begin if (reset) begin count <= 0; state <= 0; overflow <= 0; end else begin case (state) 0: begin count <= count + 1; if (count == 7) begin state <= 1; overflow <= 1; end end 1: begin count <= count - 1; if (count == 0) begin state <= 0; overflow <= 0; end end endcase end end endmodule这段代码中计数器为啥会是4位

这段代码中计数器是4位的原因是因为使用了4个二进制位可以表示0~15之间的所有数值，而计数器的作用是用来计数的，因此需要能够表示从0开始计数到15的所有数值。因此，使用4位二进制位来表示计数器是合理的，并且也...

module scrolling(clk,reset,L0,L1,L2,L3,L4); input clk,reset; output reg[6:0]L0,L1,L2,L3,L4; parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7,s8=8; reg[3:0] c_st,n_st; wire pm; CNT U1(clk,reset,pm); always @( posedge pm or posedge reset) begin if(reset) c_st<=s0; else c_st<=n_st; end always @(c_st) begin case(c_st) s0: begin L0<=7'b1111001;n_st<=s1; end s1: begin L0<=7'b0100100;L1<=7'b1111001;n_st<=s2; end s2: begin L0<=7'b0110000;L1<=7'b0100100;L2<=7'b1111001;n_st<=s3; end s3: begin L0<=7'b0011001;L1<=7'b0110000;L2<=7'b0100100;L3<=7'b1111001;n_st<=s4; end s4: begin L0<=7'b0010010;L1<=7'b0011001;L2<=7'b0110000;L3<=7'b0100100;L4<=7'b1111001;n_st<=s5; end s5: begin L1<=7'b0010010;L2<=7'b0011001;L3<=7'b0110000;L4<=7'b0100100;L0<=7'b1111001;n_st<=s6; end s6: begin L2<=7'b0010010;L3<=7'b0011001;L4<=7'b0110000;L0<=7'b0100100;L1<=7'b1111001;n_st<=s7; end s7: begin L3<=7'b0010010;L4<=7'b0011001;L0<=7'b0110000;L1<=7'b0100100;L2<=7'b1111001;n_st<=s8; end s8: begin L4<=7'b0010010;L0<=7'b0011001;L1<=7'b0110000;L2<=7'b0100100;L3<=7'b1111001;n_st<=s4; end default:n_st<=s0; endcase end endmodule module CNT(clk,reset,PM);//计数器实现1s input clk,reset; output PM; reg FULL; reg[25:0] Q1; always @(posedge clk or posedge reset) if(reset) begin Q1<=0;FULL<=0; end else if(LD) begin Q1<=0;FULL<=1; end else begin Q1<=Q1+1; FULL=0; end assign LD = (Q1==26'D49999999); assign PM = FULL; endmodule

这段代码实现了一个带有滚动...在滚动显示过程中，通过case语句对不同的状态进行处理，依次将要显示的数码管状态分别赋值给L0、L1、L2、L3、L4。当显示完最后一个状态后，又回到了最初的状态，实现了循环滚动的效果。

always@(posedge clk or posedge rst) begin if(rst) begin wei_cnt <= 2'd0; end else begin wei_cnt <= wei_cnt + 1'b1; end end always@(posedge clk or posedge rst) begin if (rst) begin wei <= 4'd0; data <= 4'd0; end else begin case(wei_cnt) 2'b00: begin wei <= 4'b0001; data <= d_in % 10; end 2'b01: begin wei <= 4'b0010; data <= d_in / 10; end 2'b10: begin wei <= 4'b0100; data <= 4'd5; end 2'b11: begin wei <= 4'b1000; data <= {2'd0,key[2],key[1]}; end endcase end end

这是一段 Verilog 代码，它描述了一个数字键盘的输入。其中，rst 为异步复位...代码中的 case 语句根据 wei_cnt 的值来判断当前要显示哪一位数字，并将这个数字放在 data 变量中，同时将要显示的位置放在 wei 变量中。

解释如下代码：抢答器7段数码管（8组）动态扫描模块 module responder_scan( input clk, input rst_n, input [6:0] seg_ten, seg_one, seg_code, output reg [7:0] an, output reg [6:0] data ); reg [7:0] CS, NS; parameter [7:0] IDLE = 8'b0000_0001, s2 = 8'b0000_0010, s3 = 8'b0000_0100, s4 = 8'b0000_1000, s5 = 8'b0001_0000, s6 = 8'b0010_0000, s7 = 8'b0100_0000, s8 = 8'b1000_0000; always @ ( negedge rst_n or posedge clk ) begin if ( !rst_n ) CS <= IDLE; else CS <= NS; end always @ ( CS ) begin case ( CS ) IDLE: NS <= s2; s2: NS <= s3; s3: NS <= s4; s4: NS <= s5; s5: NS <= s6; s6: NS <= s7; s7: NS <= s8; s8: NS <= IDLE; default: NS <= IDLE; endcase end always @ ( negedge rst_n or posedge clk )begin if ( !rst_n ) {an, data} <= 'b1111_1110_1100_0000; else case ( NS ) IDLE: begin an <= 'b1111_1110; data <= seg_one; end // an0 data one s2: begin an <= 'b1111_1101; data <= seg_ten; end // an1 data ten s3: begin an <= 'b1111_1011; data <= 'b100_0000; end // an2 data 0 s4: begin an <= 'b1111_1011; data <= 'b100_0000; end // an3 data 0 s5: begin an <= 'b1111_1011; data <= 'b100_0000; end // an4 data 0 s6: begin an <= 'b1111_1011; data <= 'b100_0000; end // an5 data 0 s7: begin an <= 'b1111_1011; data <= 'b100_0000; end // an6 data 0 s8: begin an <= 'b0111_1111; data <= seg_code; end // an7 data code default: begin an <= 'b1111_1110; data <= 'b100_0000; end // an0 data 0 endcase end endmodule

在 negedge rst_n 或 posedge clk 时刻，根据当前状态 CS 和下一个状态 NS，将选择信号和数据信号输出到对应的数码管上，实现动态扫描显示。其中，IDLE 表示空闲状态，s2~s8 表示 7 个抢答器状态，an0~an6 表示 7 个...

timescale 1ns / 1ps module digital( input clk , input rstn , input [3:0] data1, input [3:0] data2, input [3:0] data3, input [3:0] data4, output reg [7:0] seg , output reg [3:0] sel ); reg [15:0]cn1; reg clk1k; always@(posedge clk or negedge rstn) //分频 begin if(!rstn)begin cn1<=0; clk1k<=0; end else if(cn1>=24999)begin //累积到24999 clk1k<=!clk1k; cn1<=0; end else begin cn1<=cn1+1; end end reg [3:0] tub; reg [2:0] state; always@(posedge clk1k or negedge rstn) begin if(!rstn)begin tub <= 0; state <= 0; sel <= 0; end else begin case(state) 0:begin tub<=data1;sel<=4'b0111;state<=1;end 1:begin tub<=data2;sel<=4'b1110;state<=2;end 2:begin tub<=data3;sel<=4'b1101;state<=3;end 3:begin tub<=data4;sel<=4'b1011;state<=0;end default:state<=0; endcase end end always@(posedge clk1k or negedge rstn) if(!rstn) seg<=8'b0000_0011; else case(tub) // 0-9 4'b0000 : seg <= 8'b0000_0011; 4'b0001 : seg <= 8'b1001_1111; 4'b0010 : seg <= 8'b0010_0101; 4'b0011 : seg <= 8'b0000_1101; 4'b0100 : seg <= 8'b1001_1001; 4'b0101 : seg <= 8'b0100_1001; 4'b0110 : seg <= 8'b0100_0001; 4'b0111 : seg <= 8'b0001_1111; 4'b1000 : seg <= 8'b0000_0001; 4'b1001 : seg <= 8'b0000_1001; default:seg<=8'b0000_0011; endcase endmodule上述代码是当输入数据为0x1346时数码管正确显示0x1346，请告诉我怎么将它修改为当输入数字为十进制数数码管能正确显示数字的代码。例如输入为十进制数4567，数码管正确显示4567

0:begin tub<=data[3:0];sel<=4'b0111;state<=1;end 1:begin tub<=data[7:4];sel<=4'b1110;state<=2;end 2:begin tub<=data[11:8];sel<=4'b1101;state<=3;end 3:begin tub<=data[15:12];sel<=4'b1011;state<=...

解释以下代码module seg ( input io_1khz, input rst, input [3:0] num1, input [3:0] num2, input [3:0] num3, input [3:0] num4, input [3:0] num5, input [3:0] num6, output reg [6:0] out_seg, output reg dig,//小数点 output reg [2:0] state ); reg [8:0] cnt_2hz; reg [3:0] num; reg cat;//闪烁 always @ (posedge io_1khz or negedge rst) begin //位选 if(!rst) state <= 3'd0; else if(state==3'd7) state <= 3'd0; else state <= state + 1'b1; end always @ (posedge io_1khz or negedge rst) begin //闪烁的计数，500次后变 if(!rst) begin cnt_2hz <= 9'd0; cat <= 1'b1; end else if(cnt_2hz == 9'd499) begin cnt_2hz <= 9'd0; cat <= ~cat; end else begin cnt_2hz <= cnt_2hz +1'b1; end end always @ (state) begin //数码管8位，只要6位 case(state) 4'd0: begin num <= num6; dig <= 0; end 4'd1: begin num <= num5; dig <= 1; end 4'd2: begin num <= num4; dig <= 0; end 4'd3: begin num <= num3; dig <= cat; end 4'd4: begin num <= num2; dig <= 0; end 4'd5: begin num <= num1; dig <= 0; end default: begin num <= 4'd10; dig <= 0; end endcase end always @ (num) begin case(num) 4'd0:out_seg<=7'b1111_110; 4'd1:out_seg<=7'b0110_000; 4'd2:out_seg<=7'b1101_101; 4'd3:out_seg<=7'b1111_001; 4'd4:out_seg<=7'b0110_011; 4'd5:out_seg<=7'b1011_011; 4'd6:out_seg<=7'b1011_111; 4'd7:out_seg<=7'b1110_000; 4'd8:out_seg<=7'b1111_111; 4'd9:out_seg<=7'b1111_011; default:out_seg<=7'b0000_000; endcase end endmodule

这段代码实现了一个数字显示模块，通过输入六个4位数字，可以在七段数码管上显示出来。其中，io_1khz为输入时钟信号，rst为复位信号，num1到num6为输入的六个数字，out_seg为七段数码管的输出，dig为小数点的输出，...

verilog音乐播放器两个底层模块module div(iclk_50,rst,addr,clk_4); input iclk_50; input rst; output [8:0]addr; output clk_4; reg clk_4; reg [8:0]addr; reg [31:0]count_4; always@(posedge iclk_50 or negedge rst) begin if(!rst) begin clk_4=1'b0; count_4<=32'd0; end else if(count_4==50000000/4*2-1) begin clk_4=~clk_4; count_4<=32'd0; end else count_4<=count_4+32'd1; end always@(posedge clk_4 or negedge rst) begin if(!rst) addr<=9'd0; else if(addr==9'd420) addr<=9'd0; else addr<=addr+9'd1; end endmodule2.module ToneTaba(iclk_50,code,speaker); input iclk_50; input [4:0]code; output speaker; reg [17:0]Tone; reg [17:0]cnt; reg clk_tmp; always@(posedge iclk_50) begin case(code) 5'd0:Tone<=134; 5'd1:Tone<=191132; 5'd2:Tone<=170242; 5'd3:Tone<=151700; 5'd4:Tone<=143184; 5'd5:Tone<=127552; 5'd6:Tone<=113636; 5'd7:Tone<=101236; 5'd8:Tone<=95548; 5'd9:Tone<=85136; 5'd10:Tone<=75838; 5'd11:Tone<=71582; 5'd12:Tone<=65776; 5'd13:Tone<=56818; 5'd14:Tone<=50618; 5'd15:Tone<=47824; 5'd16:Tone<=42564; 5'd17:Tone<=37992; 5'd18:Tone<=35794; 5'd19:Tone<=31888; 5'd20:Tone<=28409; 5'd21:Tone<=25310; endcase; if(cnt==Tone/2-1) begin clk_tmp=~clk_tmp; cnt<=0; end else cnt<=cnt+1; end assign speaker=clk_tmp; endmodule写出顶层模块代码

always @(posedge clk_4) begin code <= $readmemh("music.hex", addr); end assign speaker = speaker_div; endmodule 在这个顶层模块中，我们实例化了两个底层模块：div 和 ToneTaba。div 模块用于产生 4...

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