实现vga的实现odule VGA(

clock,

switch,

disp_RGB,

hsync,

vsync

)

input clock //系统输入时钟 50MHz

input [1:0]switch

output [2:0]disp_RGB //VGA数据输出

output hsync //VGA行同步信号

output vsync //VGA场同步信号



reg [9:0] hcount //VGA行扫描计数器

reg [9:0] vcount //VGA场扫描计数器

reg [2:0] data

reg [2:0] h_dat

reg [2:0] v_dat



//reg [9:0] timer



reg flag

wire hcount_ov

wire vcount_ov

wire dat_act

wire hsync

wire vsync

reg vga_clk

//VGA行、场扫描时序参数表-Vga achieve the realization odule VGA (clock, switch, disp_RGB, hsync, vsync)　input clock // system input clock 50MHz input [1:0] switch　output [2:0] disp_RGB // VGA output hsync data output　// VGA horizontal synchronization signal output vsync // VGA vertical sync signals reg [9:0] hcount // VGA line scan counter reg [9:0] vcount // VGA-field scanning counter reg [2:0] data　reg [2:0] h_dat　reg [2:0] v_dat // reg [9:0] timer　reg flag　wire hcount_ov　wire vcount_ov　wire dat_act　wire hsync　wire vsync　reg vga_clk // VGA horizontal and vertical scanning Timing Parameters Table