//VGA displayed
//mode 800*600 72Hz
//date 2011-05-04 am
module vga_dis(
//input pins
clk ,
rst_n,
//output pins
hsync,vsync,
vga_r,vga_g,vga_b
);
input clk; //50MHz
input rst_n; //低电平复位
output hsync; //行同步信号
output vsync;
//颜色信号线RGB
output vga_r;
output vga_g;
output vga_b;
//----------------------------------------------------------------------
reg [10:0] x_cnt; //行坐标
reg [9:0] y_cnt; //列坐标
//-----------------------------------------------------------------
wire [10:0]xpos; //有效显示行坐标
wire [9:0]ypos; //有效显示列坐标
//------------------------------------------------------------------
reg hsync_r,vsync_r; //同步信号
wire valid; //有效显示区标志
reg [2:0]vga_rgb; //显示像素颜色
reg [5:0]char1_bit; //取模的位数
//-------------------------------------------------------------------
//定义存放数据的寄存器
reg [15:0]char_line0[9:0];
reg [15:0]char_line1[9:0];
reg [15:0]char_line2[9:0];
reg [15:0]char_line3[9:0];
reg [15:0]char_line4[9:0];
reg [15:0]char_line5[9:0];
reg [15:0]char_line6[9:0];
reg [15:0]char_line7[9:0];
reg [15:0]char_line8[9:0];
reg [15:0]char_line9[9:0];
reg [15:0]char_line10[9:0];
reg [15:0]char_line11[9:0];
reg [15:0]char_line12[9:0];
reg [15:0]char_line13[9:0];
reg [15:0]char_line14[9:0];
reg [15:0]char_line15[9:0];
reg [15:0]char_line16[9:0];
reg [15:0]char_line17[9:0];
reg [15:0]char_line18[9:0];
reg [15:0]char_line19[9:0];
reg [15:0]char_line20[9:0];
reg [15:0]char_line21[9:0];
reg [15:0]char_line22[9:0];
reg [15:0]char_line23[9:0];
reg [15:0]char_line24[9:0];
reg [15:0]char_line25[9:0];
reg [15:0]char_line26[9:0];
reg [15:0]char_line27[9:0];
reg [15:0]char_line28[9:0];
reg [15:0]char_line29[9:0];
reg [15:0]char_line30[9:0];
reg [15:0]char_line31[9:0];
//-------------------------------------------------------------------------------------
//定义扫描显示的数据，wire型
wire [47:0]line0; //第1行
wire [47:0]line1; //第2行
wire [47:0]line2; //第3行
wire [47:0]line3; //第4行
wire [47:0]line4; //第5行
wire [47:0]line5; //第6行
wire [47:0]line6; //第7行
wire [47:0]line7; //第8行
wire [47:0]line8; //第9行
wire [47:0]line9; //第10行
wire [47:0]line10; //第11行
wire [47:0]line11; //第12行
wire [47:0]line12; //第13行
wire [47:0]line13; //第14行
wire [47:0]line14; //第15行
wire [47:0]line15; //第16行
wire [47:0]line16; //第17行
wire [47:0]line17; //第18行
wire [47:0]line18; //第19行
wire [47:0]line19; //第20行
wire [47:0]line20; //第21行
wire [47:0]line21; //第22行
wire [47:0]line22; //第23行
wire [47:0]line23; //第24行
wire [47:0]line24; //第25行
wire [47:0]line25; //第26行
wire [47:0]line26; //第27行
wire [47:0]line27; //第28行
wire [47:0]line28; //第29行
wire [47:0]line29; //第30行
wire [47:0]line30; //第31行
wire [47:0]line31; //第32行
//---------------------------------------------------------------------------------------
wire [25:0]cnt;
reg [25:0]cnt_r; //计数，产生一秒的时间
reg [3:0]ge_r,shi_r,bai_r; //计数时间，三位数，个十百
wire [3:0]ge,shi,bai;
//---------------------------------------------------------------------------------------
//将0123456789的取模数据存入到寄存器中，16*32
//每个字符将其最上面的数据存到line0中，然后依次往下推
//将数字x的取模数据存到地址为x的寄存器中，例如0的数据就存到地址为0的存储单元中
always
begin
char_line0[0] <= 16'h0000; //0的字模
char_line1[0] <= 16'h0000;
char_line2[0] <= 16'h0000;
char_line3[0] <= 16'h0000;
char_line4[0] <= 16'h0000;
char_line5[0] <= 16'h0000;
char_line6[0] <= 16'h03f0;
char_line7[0] <= 16'h0738;
char_line8[0] <= 16'h0e1c;
char_line9[0] <= 16'h1c0e;
char_line10[0] <= 16'h1c0e;
char_line11[0] <= 16'h1c06;
char_line12[0] <= 16'h3807;
char_line13[0] <= 16'h3807;
char_line14[0] <= 16'h3807;
char_line15[0] <= 16'h3807;
char_line16[0] <= 16'h3807;
char_line17[0] <= 16'h3807;
char_line18[0] <= 16'h3807;
char_line19[0] <= 16'h3807;
char_line20[0] <= 16'h3807;
char_line21[0] <= 16'h1c06;
char_line22[0] <= 16'h1c0e;
char_line23[0] <= 16'h1c0e;
char_line24[0] <= 16'h0e1c;
char_line25[0] <= 16'h0738;
char_line26[0] <= 16'h03f0;
char_line27[0] <= 16'h0000;
char_line28[0] <= 16'h0000;
char_line29[0] <= 16'h0000;
char_line30[0] <= 16'h0000;
char_line31[0] <= 16'h0000;
char_line0[1] <= 16'h0000; //1的字模
char_line1[1] <= 16'h0000;
char_line2[1] <= 16'h0000;
char_line3[1] <= 16'h0000;
char_line4[1] <= 16'h0000;
char_line5[1] <= 16'h0000;
char_line6[1] <= 16'h00c0;
char_line7[1] <= 16'h01c0;
char_line8[1] <= 16'h1fc0;
char_line9[1] <= 16'h01c0;
char_line10[1] <= 16'h01c0;
char_line11[1] <= 16'h01c0;
char_line12[1] <= 16'h01c0;
char_line13[1] <= 16'h01c0;
char_line14[1] <= 16'h01c0;
char_line15[1] <= 16'h01c0;
char_line16[1] <= 16'h01c0;
char_line17[1] <= 16'h01c0;
char_line18[1] <= 16'h01c0;
char_line19[1] <= 16'h01c0;
char_line20[1] <= 16'h01c0;
char_line21[1] <= 16'h01c0;
char_line22[1] <= 16'h01c0;
char_line23[1] <= 16'h01c0;
char_line24[1] <= 16'h01c0;
char_line25[1] <= 16'h03e0;
char_line26[1] <= 16'h1ffc;
char_line27[1] <= 16'h0000;
char_line28[1] <= 16'h0000;
char_line29[1] <= 16'h0000;
char_line30[1] <= 16'h0000;
char_line31[1] <= 16'h0000;
char_line0[2] <= 16'h0000; //2的字模
char_line1[2] <= 16'h0000;
char_line2[2] <= 16'h0000;
char_line3[2] <= 16'h0000;
char_line4[2] <= 16'h0000;
char_line5[2] <= 16'h0000;
char_line6[2] <= 16'h07f0;
char_line7[2] <= 16'h0c3c;
char_line8[2] <= 16'h181c;
char_line9[2] <= 16'h300e;
char_line10[2] <= 16'h300e;
char_line11[2] <= 16'h380e;
char_line12[2] <= 16'h380e;
char_line13[2] <= 16'h000e;
char_line14[2] <= 16'h001c;
char_line15[2] <= 16'h0018;
char_line16[2] <= 16'h0030;
char_line17[2] <= 16'h0060;
char_line18[2] <= 16'h00c0;
char_line19[2] <= 16'h0180;
char_line20[2] <= 16'h0300;
char_line21[2] <= 16'h0606;
char_line22[2] <= 16'h0c06;
char_line23[2] <= 16'h1806;
char_line24[2] <= 16'h300e;
char_line25[2] <= 16'h3ffc;
char_line26[2] <= 16'h3ffc;
char_line27[2] <= 16'h0000;
char_line28[2] <= 16'h0000;
char_line29[2] <= 16'h0000;
char_line30[2] <= 16'h0000;
char_line31[2] <= 16'h0000;
char_line0[3] <= 16'h0000; //3的字模
char_line1[3] <= 16'h0000;
char_line2[3] <= 16'h0000;
char_line3[3] <= 16'h0000;
char_line4[3] <= 16'h0000;
char_line5[3] <= 16'h0000;
char_line6[3] <= 16'h07e0;
char_line7[3] <= 16'h1c78;
char_line8[3] <= 16'h3838;
char_line9[3] <= 16'h381c;
char_line10[3] <= 16'h381c;
char_line11[3] <= 16'h381c;
char_line12[3] <= 16'h001c;
char_line13[3] <= 16'h0038;
char_line14[3] <= 16'h0070;
char_line15[3] <= 16'h03e0;
char_line16[3] <= 16'h0078;
char_line17[3] <= 16'h001c;
char_line18[3] <= 16'h000c;
char_line19[3] <= 16'h000e;
char_line20[3] <= 16'h000e;
char_line21[3] <= 16'h380e;
char_line22[3] <= 16'h380e;
char_line23[3] <= 16'h380c;
char_line24[3] <= 16'h381c;
char_line25[3] <= 16'h1c38;
char_line26[3] <= 16'h07e0;
char_line27[3] <= 16'h0000;
char_line28[3] <= 16'h0000;
char_line29[3] <= 16'h0000;
char_line30[3] <= 16'h0000;
char_line31[3] <= 16'h0000;
char_line0[4] <= 16'h0000; //4的字模
char_line1[4] <= 16'h0000;
char_line2[4] <= 16'h0000;
char_line3[4] <= 16'h0000;
char_line4[4] <= 16'h0000;
char_line5[4] <= 16'h0000;
char_line6[4] <= 16'h0038;
char_line7[4] <= 16'h0078;
char_line8[4] <= 16'h0078;
char_line9[4] <= 16'h00f8;
char_line10[4] <= 16'h01f8;
char_line11[4] <= 16'h01f8;
char_line12[4] <= 16'h0378;
char_line13[4] <= 16'h0778;
char_line14[4] <= 16'h0678;
char_line15[4] <= 16'h0c78;
char_line16[4] <= 16'h0c78;
char_line17[4] <= 16'h1878;
char_line18[4] <= 16'h3078;
char_line19[4] <= 16'h3078;
char_line20[4] <= 16'h7eff;
char_line21[4] <= 16'h0078;
char_line22[4] <= 16'h0078;
char_line23[4] <= 16'h0078;
char_line24[4] <= 16'h0078;
char_line25[4] <= 16'h0078;
char_line26[4] <= 16'h0078;
char_line27[4] <= 16'h03ff;
char_line28[4] <= 16'h0000;
char_line29[4] <= 16'h0000;
char_line30[4] <= 16'h0000;
char_line31[4] <= 16'h0000;
char_line0[5] <= 16'h0000; //5的字模
char_line1[5] <= 16'h0000;
char_line2[5] <= 16'h0000;
char_line3[5] <= 16'h0000;
char_line4[5] <= 16'h0000;
char_line5[5] <= 16'h0000;
char_line6[5] <= 16'h0ffe;
char_line7[5] <= 16'h0ffe;
char_line8[5] <= 16'h0c00;
char_line9[5] <= 16'h0c00;
char_line10[5] <= 16'h0c00;
char_line11[5] <= 16'h1800;
char_line12[5] <= 16'h1800;
char_line13[5] <= 16'h1bf0;
char_line14[5] <= 16'h1e38;
char_line15[5] <= 16'h1c1c;
char_line16[5] <= 16'h180c;
char_line17[5] <= 16'h000e;
char_line18[5] <= 16'h000e;
char_line19[5] <= 16'h000e;
char_line20[5] <= 16'h000e;
char_line21[5] <= 16'h380e;
char_line22[5] <= 16'h380e;
char_line23[5] <= 16'h301c;
char_line24[5] <= 16'h301c;
char_line25[5] <= 16'h1838;
char_line26[5] <= 16'h0fe0;
char_line27[5] <= 16'h0000;
char_line28[5] <= 16'h0000;
char_line29[5] <= 16'h0000;
char_line30[5] <= 16'h0000;
char_line31[5] <= 16'h0000;
char_line0[6] <= 16'h0000; //6的字模
char_line1[6] <= 16'h0000;
char_line2[6] <= 16'h0000;
char_line3[6] <= 16'h0000;
char_line4[6] <= 16'h0000;
char_line5[6] <= 16'h0000;
char_line6[6] <= 16'h01f8;
char_line7[6] <= 16'h038c;
char_line8[6] <= 16'h060e;
char_line9[6] <= 16'h0c0e;
char_line10[6] <= 16'h1c00;
char_line11[6] <= 16'h1c00;
char_line12[6] <= 16'h1800;
char_line13[6] <= 16'h3800;
char_line14[6] <= 16'h39f8;
char_line15[6] <= 16'h3f1c;
char_line16[6] <= 16'h3e0e;
char_line17[6] <= 16'h3c07;
char_line18[6] <= 16'h3807;
char_line19[6] <= 16'h3807;
char_line20[6] <= 16'h3807;
char_line21[6] <= 16'h3807;
char_line22[6] <= 16'h1c07;
char_line23[6] <= 16'h1c06;
char_line24[6] <= 16'h0e0e;
char_line25[6] <= 16'h071c;
char_line26[6] <= 16'h03f0;
char_line27[6] <= 16'h0000;
char_line28[6] <= 16'h0000;
char_line29[6] <= 16'h0000;
char_line30[6] <= 16'h0000;
char_line31[6] <= 16'h0000;
char_line0[7] <= 16'h0000; //7的字模
char_line1[7] <= 16'h0000;
char_line2[7] <= 16'h0000;
char_line3[7] <= 16'h0000;
char_line4[7] <= 16'h0000;
char_line5[7] <= 16'h0000;
char_line6[7] <= 16'h1ffe;
char_line7[7] <= 16'h1ffe;
char_line8[7] <= 16'h3c0c;
char_line9[7] <= 16'h3818;
char_line10[7] <= 16'h3018;
char_line11[7] <= 16'h3030;
char_line12[7] <= 16'h0030;
char_line13[7] <= 16'h0060;
char_line14[7] <= 16'h0060;
char_line15[7] <= 16'h00c0;
char_line16[7] <= 16'h00c0;
char_line17[7] <= 16'h00c0;
char_line18[7] <= 16'h0180;
char_line19[7] <= 16'h0180;
char_line20[7] <= 16'h0180;
char_line21[7] <= 16'h0380;
char_line22[7] <= 16'h0380;
char_line23[7] <= 16'h0380;
char_line24[7] <= 16'h0380;
char_line25[7] <= 16'h0380;
char_line26[7] <= 16'h0380;
char_line27[7] <= 16'h0000;
char_line28[7] <= 16'h0000;
char_line29[7] <= 16'h0000;
char_line30[7] <= 16'h0000;
char_line31[7] <= 16'h0000;
char_line0[8] <= 16'h0000; //8的字模
char_line1[8] <= 16'h0000;
char_line2[8] <= 16'h0000;
char_line3[8] <= 16'h0000;
char_line4[8] <= 16'h0000;
char_line5[8] <= 16'h0000;
char_line6[8] <= 16'h03f0;
char_line7[8] <= 16'h07f0;
char_line8[8] <= 16'h1c1c;
char_line9[8] <= 16'h380e;
char_line10[8] <= 16'h380e;
char_line11[8] <= 16'h380e;
char_line12[8] <= 16'h3c0e;
char_line13[8] <= 16'h1e1c;
char_line14[8] <= 16'h0f18;
char_line15[8] <= 16'h07f0;
char_line16[8] <= 16'h0ff0;
char_line17[8] <= 16'h1c78;
char_line18[8] <= 16'h383c;
char_line19[8] <= 16'h701e;
char_line20[8] <= 16'h700e;
char_line21[8] <= 16'h700e;
char_line22[8] <= 16'h700e;
char_line23[8] <= 16'h700e;
char_line24[8] <= 16'h381c;
char_line25[8] <= 16'h1c38;
char_line26[8] <= 16'h07e0;
char_line27[8] <= 16'h0000;
char_line28[8] <= 16'h0000;
char_line29[8] <= 16'h0000;
char_line30[8] <= 16'h0000;
char_line31[8] <= 16'h0000;
char_line0[9] <= 16'h0000; //9的字模
char_line1[9] <= 16'h0000;
char_line2[9] <= 16'h0000;
char_line3[9] <= 16'h0000;
char_line4[9] <= 16'h0000;
char_line5[9] <= 16'h0000;
char_line6[9] <= 16'h07e0;
char_line7[9] <= 16'h1c30;
char_line8[9] <= 16'h3818;
char_line9[9] <= 16'h381c;
char_line10[9] <= 16'h700c;
char_line11[9] <= 16'h700e;
char_line12[9] <= 16'h700e;
char_line13[9] <= 16'h700e;
char_line14[9] <= 16'h700e;
char_line15[9] <= 16'h701e;
char_line16[9] <= 16'h383e;
char_line17[9] <= 16'h1c7e;
char_line18[9] <= 16'h0fce;
char_line19[9] <= 16'h000e;
char_line20[9] <= 16'h001c;
char_line21[9] <= 16'h001c;
char_line22[9] <= 16'h001c;
char_line23[9] <= 16'h3838;
char_line24[9] <= 16'h3870;
char_line25[9] <= 16'h38e0;
char_line26[9] <= 16'h0fc0;
char_line27[9] <= 16'h0000;
char_line28[9] <= 16'h0000;
char_line29[9] <= 16'h0000;
char_line30[9] <= 16'h0000;
char_line31[9] <= 16'h0000;
end
//对时钟信号进行分频处理，并得到同步信号
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
x_cnt<=0;
else if(x_cnt==1039) //分频
x_cnt<=0;
else
x_cnt<=x_cnt+1'b1;
end
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
y_cnt<=0;
else if(y_cnt==665) //分频
y_cnt<=0;
else if(x_cnt==1039)
y_cnt<=y_cnt+1'b1;
end
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
hsync_r<=1;
else if(x_cnt==0)
hsync_r<=0;
else if(x_cnt==120) //行同步信号的产生
hsync_r<=1;
end
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
vsync_r<=1;
else if(y_cnt==0)
vsync_r<=0;
else if(y_cnt==6) //场同步信号的产生
vsync_r<=1;
end
assign hsync=hsync_r; //用组合逻辑连接寄存器，避免产生多余的寄存器
assign vsync=vsync_r;
//-------------------------------------------------------------------------------------
// 有效显示区标志
assign valid = (x_cnt>=187) && (x_cnt<987) && (y_cnt>=31) && (y_cnt<631);
//有效显示区坐标
assign xpos = x_cnt - 11'd187;
assign ypos = y_cnt - 10'd31;
//以上就是将vga显示的时序及显示有效坐标都写好了，下面给出各个坐标上要显示的像素的颜色
//-------------------------------------------------------------------------------------
//分频产生一秒的计时
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
cnt_r<=0;
else if(cnt_r==49_999_999)
cnt_r<=0;
else
cnt_r<=cnt_r+1'b1;
end
assign cnt=cnt_r;
//计数器计数时间
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
begin
bai_r<=0;
shi_r<=0;
ge_r<=0;
end
else if(cnt==49_999_999)
begin
if(ge_r==9)
begin
ge_r<=0;
shi_r<=shi_r+1'b1;
if(shi_r==9)
begin
shi_r<=0;
bai_r<=bai_r+1'b1;
if(bai_r==9)
bai_r<=0;
end
end
else
ge_r<=ge_r+1'b1;
end
end
assign ge=ge_r;
assign shi=shi_r;
assign bai=bai_r;
//-------------------------------------------------------------------------------------------
//采用查询的办法，来选择显示的字模
assign line0 = {char_line0[bai],char_line0[shi],char_line0[ge]};
assign line1 = {char_line1[bai],char_line1[shi],char_line1[ge]};
assign line2 = {char_line2[bai],char_line2[shi],char_line2[ge]};
assign line3 = {char_line3[bai],char_line3[shi],char_line3[ge]};
assign line4 = {char_line4[bai],char_line4[shi],char_line4[ge]};
assign line5 = {char_line5[bai],char_line5[shi],char_line5[ge]};
assign line6 = {char_line6[bai],char_line6[shi],char_line6[ge]};
assign line7 = {char_line7[bai],char_line7[shi],char_line7[ge]};
assign line8 = {char_line8[bai],char_line8[shi],char_line8[ge]};
assign line9 = {char_line9[bai],char_line9[shi],char_line9[ge]};
assign line10= {char_line10[bai],char_line10[shi],char_line10[ge]};
assign line11= {char_line11[bai],char_line11[shi],char_line11[ge]};
assign line12= {char_line12[bai],char_line12[shi],char_line12[ge]};
assign line13= {char_line13[bai],char_line13[shi],char_line13[ge]};
assign line14= {char_line14[bai],char_line14[shi],char_line14[ge]};
assign line15= {char_line15[bai],char_line15[shi],char_line15[ge]};
assign line16= {char_line16[bai],char_line16[shi],char_line16[ge]};
assign line17= {char_line17[bai],char_line17[shi],char_line17[ge]};
assign line18= {char_line18[bai],char_line18[shi],char_line18[ge]};
assign line19= {char_line19[bai],char_line19[shi],char_line19[ge]};
assign line20= {char_line20[bai],char_line20[shi],char_line20[ge]};
assign line21= {char_line21[bai],char_line21[shi],char_line21[ge]};
assign line22= {char_line22[bai],char_line22[shi],char_line22[ge]};
assign line23= {char_line23[bai],char_line23[shi],char_line23[ge]};
assign line24= {char_line24[bai],char_line24[shi],char_line24[ge]};
assign line25= {char_line25[bai],char_line25[shi],char_line25[ge]};
assign line26= {char_line26[bai],char_line26[shi],char_line26[ge]};
assign line27= {char_line27[bai],char_line27[shi],char_line27[ge]};
assign line28= {char_line28[bai],char_line28[shi],char_line28[ge]};
assign line29= {char_line29[bai],char_line29[shi],char_line29[ge]};
assign line30= {char_line30[bai],char_line30[shi],char_line30[ge]};
assign line31= {char_line31[bai],char_line31[shi],char_line31[ge]};
//-------------------------------------------------------------------------------------------
//显示位的计算，从高位到低位
always @ (posedge clk or negedge rst_n)
begin
if(!rst_n)
char1_bit<=6'h3f;
else if(xpos==380)
char1_bit<=47;
else if(xpos>=380&&xpos<428)
char1_bit<=char1_bit-1'b1;
end
/*--------------------------------------------------------------------------------------
VGA彩色信号
RGB = 000 黑色 RGB = 100 红色
= 001 蓝色 = 101 紫色
= 010 绿色 = 110 黄色
= 011 青色 = 111 白色
----------------------------------------------------------------------------------------*/
//VGA显示的坐标定位，显示为绿色，背景为白色
always @ (posedge clk)
begin
if(!valid) vga_rgb<=0;
else if(xpos>=381&&xpos<430)
begin
case(ypos)
190 : if(line0[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
191 : if(line1[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
192 : if(line2[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
193 : if(line3[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
194 : if(line4[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
195 : if(line5[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
196 : if(line6[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
197 : if(line7[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
198 : if(line8[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
199 : if(line9[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
200 : if(line10[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
201 : if(line11[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
202 : if(line12[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
203 : if(line13[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
204 : if(line14[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
205 : if(line15[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
206 : if(line16[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
207 : if(line17[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
208 : if(line18[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
209 : if(line19[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
210 : if(line20[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
211 : if(line21[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
212 : if(line22[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
213 : if(line23[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
214 : if(line24[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
215 : if(line25[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
216 : if(line26[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
217 : if(line27[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
218 : if(line28[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
219 : if(line29[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
220 : if(line30[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
221 : if(line31[char1_bit])
vga_rgb<=3;
else
vga_rgb<=0;
default : vga_rgb<=0;
endcase
end
else
vga_rgb<=0;
end
//r,g,b控制液晶屏颜色显示
assign vga_r = vga_rgb[2];
assign vga_g = vga_rgb[1];
assign vga_b = vga_rgb[0];
endmodule
/3 
用户377235 2014-4-16 14:46
用户377235 2013-12-26 19:56
用户1710391 2012-12-23 11:20