?? bcdcnt.v
字號:
module bcdcnt(dsec, sec,secd,secm,clkin,clrn,cn);
input clkin,clrn; //Tclkin = 0. 1s
output[3:0] dsec,sec,secd,secm;
output cn;
reg cn;
reg[3:0] dsec,sec,secd,secm;
always @(posedge clkin or negedge clrn)
begin
if (!clrn)
begin
dsec<=0;
sec<=0;
secd<=0;
secm<=0;
end
else
begin
if(secm==9)
begin
secm<=0;
if(secd==9)
begin
secd<=0;
if(sec==9)
begin
sec<=0;
if(dsec==5)
begin
dsec<=0;
cn<=1;
end
else dsec<=dsec+1;
end
else sec<=sec+1;
end
else secd<=secd+1;
end
else
begin
secm<=secm+1;
cn<=0;
end
end
//if ((dsec[3:0]==5)&&(sec[3:0]==9)&&(secd[3:0]==9)&&(secm[3:0]==9)) cn<=1;
//else cn<=0;
end
endmodule
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -