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vga_ctr.v
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vga_ctr.v
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module vga_ctr
(
input vga_clk,//输入时钟50M
input vga_rst_n, //复位
input shift_l, //左移按键输入 key3 Y16 按下 0
input shift_r, //右移按键输入 key2 W15
input [9:0] i_data,
input [11:0] v_num_data, // 3位BCD码 0001 0010 0011 --> 1.23 v
input [23:0] f_num_data, // 6位BCD码 123.456 khz
input f_div_select, //高电平20ms 低电平100us
input V_div_select,
input vga_rst, // 图像复位，高有效
output [11:0] o_address,
output reg[23:0] color_data,//颜色信号 红--绿--蓝
output vga_hs, //行同步信号输出
output vga_vs, //场同步信号输出
output reg clk_25M,
output blank_n, //消隐
output sync_n //信号同步
);
reg [11:0] cnt_hs; //行信号clk计数,
reg [11:0] cnt_vs; //场信号clk计数
wire lcd_request;
wire [11:0] vga_x; //VGA的x坐标
wire [11:0] vga_y; //VGA的y坐标
reg [9:0] i_temp;
reg[19:0] divider_25hz; //25m 分频至25hz
reg clk_25hz;
reg [11:0] shift_h ;
reg [11:0] position_X,position_Y;
wire area0;//网格线标志
wire area1;//界面区域标志
wire area2;//数据框标志
wire area3,area4,area_u,area_m,area_k;//
wire num0,num1,num2,num3,num4,num5,num6,num7,num8,num9;
wire [11:0] temp_x;
wire [11:0] temp_y;
//--------测试幅值、频率显示---------
//wire [11:0] v_num_data;
//wire [23:0] f_num_data;
// assign v_num_data = 12'b0000_0001_0010 ;
// assign f_num_data = 24'b0010_0000_0000_0110_0111_1000 ;
//define colors RGB--8|8|8
`define RED 24'hFF0000 /*11111111,00000000,00000000 */
`define GREEN 24'h00FF00 /*00000000,11111111,00000000 */
`define BLUE 24'h0000FF /*00000000,00000000,11111111 */
`define WHITE 24'haaaaaa/*11111111,11111111,11111111 */
`define BLACK 24'h000000 /*00000000,00000000,00000000 */
`define YELLOW 24'hFFFF00 /*11111111,11111111,00000000 */
`define CYAN 24'hFF00FF /*11111111,00000000,11111111 */
`define ROYAL 24'h00FFFF /*00000000,11111111,11111111 */
// 640 * 480
`define H_FRONT 11'd16
`define H_SYNC 11'd96
`define H_BACK 11'd48
`define H_DISP 11'd640
`define H_TOTAL 11'd800
`define V_FRONT 11'd10
`define V_SYNC 11'd2
`define V_BACK 11'd33
`define V_DISP 11'd480
`define V_TOTAL 11'd525
//---------------------------------------------------------
//功能： 产生25MHz的像素时钟
always @(posedge vga_clk or posedge vga_rst_n)
begin
if(vga_rst_n)
clk_25M <= 1'b0 ;
else
clk_25M <= ~clk_25M ;
end
//-----------------------------------------------------------
// 25M分频成50hz计数器
always @(posedge clk_25M or posedge vga_rst_n)
begin
if(vga_rst_n)
begin
clk_25hz <= 1'b0 ;
divider_25hz <= 20'd0 ;
end
else if(divider_25hz <= 20'd399999 )
begin
if(divider_25hz == 20'd199999)
clk_25hz <= ~clk_25hz ;
divider_25hz <= divider_25hz+ 20'd1 ;
end
else
divider_25hz <= 20'd0 ;
end
//按键检测，赋给水平偏移寄存器
// 0-- 4095-512 ==3583
always@(posedge clk_25hz or posedge vga_rst )
begin
if(vga_rst)
shift_h <= 0;
else if({ shift_l,shift_r} == 2'b01 ) // 左移
if( shift_h <= 3578 )
shift_h <= shift_h +5;
else
shift_h <= 3583 ;
else if( {shift_l,shift_r} == 2'b10 ) // 右移
if( shift_h>= 5 )
shift_h <= shift_h -5;
else
shift_h <= 5;
else //同时按 、不按
shift_h <= shift_h ;
end
//----------------------------------------------------
//VGA行同步信号
always @ (posedge clk_25M or posedge vga_rst_n)
begin
if (vga_rst_n)
cnt_hs <= 11'd0;
else
begin
if(cnt_hs < `H_TOTAL - 1'b1) //line over
cnt_hs <= cnt_hs + 1'b1;
else
cnt_hs <= 11'd0;
end
end
assign vga_hs = (cnt_hs <= `H_SYNC - 1'b1) ? 1'b0 : 1'b1;
//VGA场同步信号
always@(posedge clk_25M or posedge vga_rst_n)
begin
if (vga_rst_n)
cnt_vs <= 11'b0;
else if(cnt_hs == `H_TOTAL - 1'b1) //line over
begin
if(cnt_vs < `V_TOTAL - 1'b1) //frame over
cnt_vs <= cnt_vs + 1'b1;
else cnt_vs <= 11'd0;
end
end
assign vga_vs = (cnt_vs <= `V_SYNC - 1'b1) ? 1'b0 : 1'b1;
assign blank_n = lcd_request;//vga_hs & vga_vs;
assign sync_n=1'b0;
//ahead x clock
localparam H_AHEAD = 11'd1;
assign lcd_request = ((cnt_hs >= `H_SYNC + `H_BACK - H_AHEAD )&& (cnt_hs < `H_SYNC + `H_BACK + `H_DISP - H_AHEAD) &&
(cnt_vs >= `V_SYNC + `V_BACK )&& (cnt_vs < `V_SYNC + `V_BACK + `V_DISP) )
? 1'b1 : 1'b0;
//lcd vgax & vgay
assign vga_x = lcd_request ? (cnt_hs - (`H_SYNC + `H_BACK - H_AHEAD)) : 11'd0;
assign vga_y = lcd_request ? (cnt_vs - (`V_SYNC + `V_BACK)) : 11'd0;
//------------------------------------
//----------------波形平移、伸缩变换-------------
assign o_address = (vga_x + shift_h -8) >=0 ? (vga_x + shift_h -8) : 12'd0 ; // 水平偏移量+水平扫描量-前框格点
always@(posedge clk_25M )
if (V_div_select)
i_temp = (349*10-i_data*11*10/50)-2400+240;
else
i_temp = (349-i_data*11/50) ; // 1024*11/50
//------------------------------------
// 示波器界面取模区
assign area0 = ( (vga_x-10) %50 ==0 || (vga_y -20) % 55 ==0 ) ?1'b1 : 1'b0; //网格线
assign area1 = (vga_x >= 10 && vga_x <= 510 && vga_y >= 20 && vga_y <= 460) ?1'b1 : 1'b0; //波形显示与网格线总区域
assign area2 = (vga_x >= 520 && vga_x <= 620 && vga_y >= 80 && vga_y <= 400 ) ?1'b1 : 1'b0;
assign area_u =(
vga_y == 468 && vga_x == 532 //38--32
|| vga_y == 475 && vga_x == 534
|| vga_y >= 468 && vga_y <= 474 && vga_x == 533
|| vga_y == 474 && vga_x == 535
|| vga_y >= 468 && vga_y <= 475 && vga_x == 536
|| vga_y == 475 && vga_x == 537 //u
)?1'b1 : 1'b0;
assign area_m =(
vga_y == 468 && vga_x == 532 //38--32
|| vga_y == 469 && vga_x == 534
|| vga_y >= 468 && vga_y <= 475 && ( vga_x == 533 || vga_x == 535)
|| vga_y == 468 && vga_x == 536
|| vga_y >= 469 && vga_y <= 475 && vga_x == 537//m
)?1'b1 : 1'b0;
assign area_k =(
( (vga_y == 156|| vga_y == 157) && vga_x == 617 ) //显K
|| ((vga_y == 155|| vga_y == 158) && vga_x == 618 )
|| ((vga_y == 154|| vga_y == 159) && vga_x == 619 )
|| vga_y >= 153 && vga_y <= 160 && ( vga_x == 616 )
//k
)?1'b1 : 1'b0;
assign area3 = ( vga_x >= 621 && vga_x <= 626 && ( vga_y == 156 ) || //显示Hz
vga_y >= 151 && vga_y <= 161 && ( vga_x == 621 || vga_x == 626 ) ||
vga_x >= 628 && vga_x <= 633 && ( vga_y == 156 || vga_y == 161 ) || ( vga_x == 632 && vga_y == 157 )
|| ( vga_x == 631 && vga_y == 158 )|| ( vga_x == 630 && vga_y == 159 ) || ( vga_x == 629 && vga_y == 160)
//显示 0
|| vga_x >= 1 && vga_x <= 6 && ( vga_y == 234 || vga_y == 244 ) ||
vga_y >= 234 && vga_y <= 244 && ( vga_x == 1 || vga_x == 6 )
//显示电压单位V 613--610 134-->11
|| vga_y >= 101 && vga_y <= 104 && ( vga_x == 620 || vga_x == 624 )
|| vga_y >= 105 && vga_y <= 108 && ( vga_x == 621 || vga_x == 623 )
|| vga_y >= 109 && vga_y <= 111 && ( vga_x == 622 )
//显示 1 or 0.1 V/div
||vga_y >= 1 && vga_y <= 11 && ( vga_x == 15 )//1
|| vga_y >= 1 && vga_y <= 4 && ( vga_x == 19 || vga_x == 23 )
|| vga_y >= 5 && vga_y <= 8 && ( vga_x == 20 || vga_x == 22 )
|| vga_y >= 9 && vga_y <= 11 && ( vga_x == 21 )//V
|| vga_y >= 10 && vga_y <= 11 && vga_x == 25
|| vga_y >= 8 && vga_y <= 9 && vga_x == 26
|| vga_y >= 6 && vga_y <= 7 && vga_x == 27
|| vga_y >= 4 && vga_y <= 5 && vga_x == 28
|| vga_y >= 2 && vga_y <= 3 && vga_x == 29 // /
|| vga_y >= 4 && vga_y <= 6 && ( vga_x == 40 || vga_x == 44 )
|| vga_y >= 7 && vga_y <= 9 && ( vga_x == 41 || vga_x == 43 )
|| vga_y >= 10 && vga_y <= 11 && ( vga_x == 42 )//v
|| vga_y >= 4 && vga_y <= 11 && vga_x == 38
|| vga_y >= 1 && vga_y <= 2 && vga_x == 38
|| vga_y == 4 && vga_x >= 36 && vga_x <= 37 //i
|| vga_y >= 1 && vga_y <= 11 && vga_x == 34
|| vga_y >= 5 && vga_y <= 10 && vga_x == 30
||( vga_y == 4 || vga_y == 11 ) && vga_x >= 31 && vga_x <= 32
||( vga_y == 5 || vga_y == 10 ) && vga_x == 33 //d
//显示 时间 100us 20ms /div 2
||( (vga_y == 468 || vga_y == 469) || vga_y == 474 ) && vga_x == 539
|| (vga_y == 467 || vga_y == 475 ) &&( vga_x >= 540 && vga_x <= 542 )//458--443
|| vga_y == 470 && ( vga_x >= 540 && vga_x <= 541 )//s
|| vga_y == 471 && vga_x == 542
||( (vga_y == 468 || vga_y == 472) || vga_y == 473 || vga_y == 474 ) && vga_x == 543//s
|| vga_y >= 468 && vga_y <= 470 && ( vga_x == 560 || vga_x == 564 )
|| vga_y >= 471 && vga_y <= 473 && ( vga_x == 561 || vga_x == 563 )
|| vga_y >= 474 && vga_y <= 475 && ( vga_x == 562 )//v
|| vga_y >= 468 && vga_y <= 475 && vga_x == 558
|| vga_y >= 465 && vga_y <= 466 && vga_x == 558
|| vga_y == 468 && vga_x >= 556 && vga_x <= 557 //i
|| vga_y >= 465 && vga_y <= 475 && vga_x == 554
|| vga_y >= 469 && vga_y <= 474 && vga_x == 550
||( vga_y == 468 || vga_y == 475 ) && vga_x >= 551 && vga_x <= 552
||( vga_y == 469 || vga_y == 474 ) && vga_x == 553 //d
|| vga_y >= 474 && vga_y <= 475 && vga_x == 545
|| vga_y >= 472 && vga_y <= 473 && vga_x == 546
|| vga_y >= 470 && vga_y <= 471 && vga_x == 547
|| vga_y >= 468 && vga_y <= 469 && vga_x == 548
|| vga_y >= 466 && vga_y <= 467 && vga_x == 549 // /
)?1'b1 : 1'b0;
//---------------数字去摸区---------------------
assign temp_x = vga_x - position_X;
assign temp_y = vga_y - position_Y;
assign num0 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 11 ) ||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 1 || temp_x == 6 )
) ?1'b1 : 1'b0;
assign num1 = ( temp_y >= 1 && temp_y <= 11 && ( temp_x == 6 )
) ?1'b1 : 1'b0;
assign num2 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 6 && temp_y <= 11 && ( temp_x == 1 )||
temp_y >= 1 && temp_y <= 5 && ( temp_x == 6 )
) ?1'b1 : 1'b0;
assign num3 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 6 )
) ?1'b1 : 1'b0;
assign num4 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 6 ) ||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 6 ) ||
temp_y >= 1 && temp_y <= 6 && ( temp_x == 1 )
) ?1'b1 : 1'b0;
assign num5 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 6 && temp_y <= 11 && ( temp_x == 6 )||
temp_y >= 1 && temp_y <= 5 && ( temp_x == 1 )
) ?1'b1 : 1'b0;
assign num6 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 6 && temp_y <= 11 && ( temp_x == 6 )||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 1 )
) ?1'b1 : 1'b0;
assign num7 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 ) ||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 6 )
) ?1'b1 : 1'b0;
assign num8 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 1 || temp_x == 6 )
) ?1'b1 : 1'b0;
assign num9 = ( temp_x >= 1 && temp_x <= 6 && ( temp_y == 1 || temp_y == 6 || temp_y == 11 ) ||
temp_y >= 1 && temp_y <= 6 && ( temp_x == 1 )||
temp_y >= 1 && temp_y <= 11 && ( temp_x == 6 )
) ?1'b1 : 1'b0;
//
//-----------------------------------------------
// 显示逻辑程序
always@(posedge clk_25M or posedge vga_rst_n)
begin
if(vga_rst_n)
color_data <= 24'H0;
// ------------波形显示区-------------------------------------
else if(area1)
if(vga_y == i_temp)
color_data <= `RED;
else if(area0)
color_data<= `BLACK; //格线
else
color_data <= 24'H606060; //内背景
//-------------电压幅值数值显示区-------------------------------------
else if(vga_x >= 581 && vga_x <= 588 && vga_y >=100 && vga_y <= 111 ) //幅值第一位数
begin
position_X <= 581;
position_Y <= 100;
case( v_num_data[11:8] )
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else if(vga_x >= 589 && vga_x <= 590 && vga_y >= 111 && vga_y <= 112)//小数点
color_data<= `BLACK;
else if(vga_x >= 591 && vga_x <= 598 && vga_y >=100 && vga_y <= 111 ) //幅值第二位数
begin
position_X <= 591;
position_Y <= 100;
case(v_num_data[7:4] )
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else if(vga_x >= 599 && vga_x <= 606 && vga_y >=100 && vga_y <= 111 ) //幅值第三位数
begin
position_X <= 599;
position_Y <= 100;
case(v_num_data[3:0])
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
//----------------频率显示区------------------------
//---------------频率前三位+小数点+‘k’（判断显示）----------------------
else if(vga_x >= 565 && vga_x <= 572 && vga_y >=150 && vga_y <= 161 ) //频率第1位数
if(f_num_data[23:12] > 0 )
begin
position_X <= 565;
position_Y <= 150;
case(f_num_data[23 :20])
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else
color_data <= `WHITE;
else if(vga_x >= 573 && vga_x <= 580 && vga_y >=150 && vga_y <= 161 ) //频率第2位数
if(f_num_data[23:12] > 0 )
begin
position_X <= 573;
position_Y <= 150;
case(f_num_data[19 :16])
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else
color_data <= `WHITE;
else if(vga_x >= 581 && vga_x <= 588 && vga_y >=150 && vga_y <= 161 ) //频率第3位数
if(f_num_data[23:12] > 0 )
begin
position_X <= 581;
position_Y <= 150;
case(f_num_data[15 :12])
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else
color_data <= `WHITE;
else if(vga_x >= 589 &&vga_x <= 590 && vga_y >= 161 && vga_y <= 162)// 频率数值小数点，34位之间
if(f_num_data[23:12] > 0 ) color_data<= `BLACK; else color_data <= `WHITE;
else if(area_k)// 频率单位‘k’
if(f_num_data[23:12] > 0 ) color_data<= `BLACK; else color_data <= `WHITE;
//------------------频率后三位（一直显示）----------------
else if(vga_x >= 591 && vga_x <= 598 && vga_y >=150 && vga_y <= 161 ) //频率第4位数
begin
position_X <= 591;
position_Y <= 150;
case( f_num_data[11:8] )
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else if(vga_x >= 599 && vga_x <= 606 && vga_y >=150 && vga_y <= 161 ) //频率第5位数
begin
position_X <= 599;
position_Y <= 150;
case( f_num_data[7:4] )
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
else if(vga_x >= 607 && vga_x <= 614 && vga_y >=150 && vga_y <= 161 ) //频率第6位数
begin
position_X <= 607;
position_Y <= 150;
case( f_num_data[3:0] )
4'd0: if(num0) color_data <= `BLACK; else color_data <= `WHITE;
4'd1: if(num1) color_data <= `BLACK; else color_data <= `WHITE;
4'd2: if(num2) color_data <= `BLACK; else color_data <= `WHITE;
4'd3: if(num3) color_data <= `BLACK; else color_data <= `WHITE;
4'd4: if(num4) color_data <= `BLACK; else color_data <= `WHITE;
4'd5: if(num5) color_data <= `BLACK; else color_data <= `WHITE;
4'd6: if(num6) color_data <= `BLACK; else color_data <= `WHITE;
4'd7: if(num7) color_data <= `BLACK; else color_data <= `WHITE;
4'd8: if(num8) color_data <= `BLACK; else color_data <= `WHITE;
4'd9: if(num9) color_data <= `BLACK; else color_data <= `WHITE;
default: color_data <= `WHITE;//
endcase
end
//----------1&0.1V切换
else if(vga_x >= 1 && vga_x <= 8 && vga_y >=0 && vga_y <= 12 ) //
begin
position_X <= 1;
position_Y <= 0;
if(V_div_select)
if(num0) color_data <= `BLACK;
else color_data <= `WHITE;
end
else if(vga_x>=9 && vga_x <= 10 && vga_y >= 10 && vga_y <= 11) //
if(V_div_select) color_data <= `BLACK;
else color_data <= `WHITE;
//-----------100us&10ns切换--------
else if(vga_x >= 523 && vga_x <= 530 && vga_y >=466 && vga_y <= 477 ) //最低位
begin
position_X <= 523;
position_Y <= 466;
if(num0) color_data <= `BLACK; else color_data <= `WHITE;
end
else if(vga_x >= 515 && vga_x <= 522 && vga_y >=466 && vga_y <= 477 ) //第二位
begin
position_X <= 515;
position_Y <= 466;
if(~f_div_select)
begin
if(num0) color_data <= `BLACK; else color_data <= `WHITE;
end
else
begin
if(num2) color_data <= `BLACK; else color_data <= `WHITE;
end
end
else if(vga_x >= 507 && vga_x <= 514 && vga_y >=466 && vga_y <= 477 ) //
begin
position_X <= 507;
position_Y <= 466;
if(~f_div_select)
if(num1) color_data <= `BLACK;
else color_data <= `WHITE;
end
//------------ 固定字符显示区------------------
else if(area3)
color_data <= `BLACK;
//-------------背景色------------------
else
if(~f_div_select)
if(area_u) color_data <= `BLACK; else color_data <= `WHITE;//背景灰色
else
if(area_m) color_data <= `BLACK; else color_data <= `WHITE;//背景灰色
end
endmodule