justhomework/Quartus/v6/jyh_4490_6_entry.v

module jyh_4490_6_entry(code,			seg,			clk_50m,		en,		in,
							//数码管型码 		数码管位码    50M			使能信号	按键
								out0,			cnt,		subclk);
							//计数值 						消抖值

output [6:0] code;
output [7:0] seg;
input  en,clk_50m,in;
output subclk;
output [3:0] out0;
output [19:0] cnt;


wire freshclk;
wire [3:0] out1;
wire [3:0] out2;
wire [3:0] out3;
wire co,co2,co3;
reg upd;

initial begin
upd=1;
end

//分频器
jyh_4490_6_divider D1(
.clk(clk_50m),
.clk_out(freshclk)
);

//个位计数器
jyh_4490_6_counter C1(
.Q(out0),
.clk(subclk),
.en(en),
.co(co),
.upd(upd));

jyh_4490_6_counter C2(
.Q(out1),
.clk(co),
.co(co2),
.en(en),
.upd(upd));

jyh_4490_6_counter C3(
.Q(out2),
.clk(co2),
.co(co3),
.en(en),
.upd(upd));

jyh_4490_6_counter C4(
.Q(out3),
.clk(co3),
.en(en),
.upd(upd));

//四位数码管译码器
jyh_4490_4_encoder E1(
.codeout(code),
.d1(out0),
.d2(out1),
.d3(out2),
.d4(out3),
.clk(freshclk),
.sel(seg[3:0])
);

//消抖模块
jyh_4490_mstate M1(
.clk(clk_50m),
.in(in),
.en(en),
.out(subclk),
.cnt(cnt)
);
endmodule