vga_字符显示(至芯X).docx

timescale 1ns / 1psmodule vga( clk_25m, rst_n, hsync, vsync, vga_r, vga_g, vga_b, );input clk_25m;input rst_n;output hsync;output vsync;output2:0 vga_r;output2:0 vga_g;output1:0 vga_b;/-reg9:0 x_cnt;reg9:0 y_cnt;always (posedge clk_25m or negedge rst_n) if(!rst_n) x_cnt = 10d0; else if(x_cnt = 10d799) x_cnt = 10d0; else x_cnt = x_cnt+1b1;always (posedge clk_25m or negedge rst_n) if(!rst_n) y_cnt = 10d0; else if(y_cnt = 10d524) y_cnt = 10d0; else if(x_cnt = 10d799) y_cnt = y_cnt+1b1;/-reg hsync_r,vsync_r; always (posedge clk_25m or negedge rst_n) if(!rst_n) hsync_r = 1b1; else if(x_cnt = 10d0) hsync_r = 1b0; else if(x_cnt = 10d96) hsync_r = 1b1;always (posedge clk_25m or negedge rst_n) if(!rst_n) vsync_r = 1b1; else if(y_cnt = 10d0) vsync_r = 1b0; else if(y_cnt = 10d2) vsync_r = 1b1;assign hsync = hsync_r;assign vsync = vsync_r;/-reg valid_yr;always (posedge clk_25m or negedge rst_n) if(!rst_n) valid_yr = 1b0; else if(y_cnt = 10d32) valid_yr = 1b1; else if(y_cnt = 10d512) valid_yr = 1b0;wire valid_y = valid_yr;reg valid_r;always (posedge clk_25m or negedge rst_n) if(!rst_n) valid_r = 1b0; else if(x_cnt = 10d141) & valid_y) valid_r = 1b1; else if(x_cnt = 10d781) & valid_y) valid_r = 1b0;wire valid = valid_r;wire9:0 y_dis;assign y_dis = y_cnt - 10d33;/-/- /*RGB = 000 o?RGB = 100o?= 001 ?= 101?= 010?= 110?= 011?= 111?*/parameter char_line0=40h0000042000, char_line1=40h7FFC042000, char_line2=40h02007FFE00, char_line3=40h04200420E7, char_line4=40h0810042042, char_line5=40h13F8020024, char_line6=40h3D10010024, char_line7=40h0100099018, char_line8=40h0100088818, char_line9=40h3FF8488418, char_linea=40h0100480624, char_lineb=40h0100481424, char_linec=40h0100881042, char_lined=40hFFFE0818E7, char_linee=40h000007F000, char_linef=40h0000000000; reg5:0 char_bit;always (posedge clk_25m or negedge rst_n)if(!rst_n) char_bit = 6h1f;else if(x_cnt = 10d442) char_bit 10d442 & x_cnt 10d482) char_bit = char_bit-1b1;reg7:0 vga_rgb;always (posedge clk_25m)if(!valid) vga_rgb 10d442 & x_cnt 10d482) begincase(y_dis)10d231: if(char_line0char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_11100;/?10d232: if(char_line1char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d233: if(char_line2char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d234: if(char_line3char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d235: if(char_line4char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d236: if(char_line5char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d237: if(char_line6char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d238: if(char_line7char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d239: if(char_line8char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d240: if(char_line9char_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d241: if(char_lineachar_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/? 10d242: if(char_linebchar_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/? 10d243: if(char_linecchar_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d244: if(char_linedchar_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d245: if(char_lineechar_bit) vga_rgb = 8b111_000_00;/o? else vga_rgb = 8b000_111_00;/?10d246: if(char_linefchar_bit) vga_rgb = 8b111_000_00;/o? el