delay in altera cyclone about led

Dear all
i write a simple test for led on altera cyclone board by jtag
protocol

such as following: led[0] will shine with some frequence

reg [31:0] temp_count=0;
reg direction=1;

parameter delay=23'h600000;
always @( posedge clock)begin
if(direction==1)begin
temp_count=temp_count+1'b1;
LED[0]=1;
if(temp_count>=delay) begin
direction=0;
end
end
if(direction==0) begin
temp_count=temp_count-1'b1;
LED[0]=0;
if(!(temp_count>0)) begin
direction=1;
end
end
end
it did work after "few minutes"
why it took "few minutes" to perform well, after i bured code into
fpga completely
thanks for reply

Sincerely Chronoer

.

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