/** 脈沖的最大計數(shù)值為99999 **/

				
module CNT_N (P, CLR, COUNT);		
    input   P, CLR;
    output  [16:0]COUNT;
    reg     [16:0]COUNT;
				
	
    always @ (posedge P or negedge CLR)
     begin
       if (!CLR)
         begin
           COUNT=0;
         end
       else if (COUNT==17'd99999)
          begin
            COUNT=17'd99999;
          end
       else
            COUNT=COUNT+1;
     end
endmodule