problem in download

Note; This topic was sent before but I didn't specify a tool set, so I sent it again

We made a small project with AT89C51. It is a simple LED show which can be adjusted by external inputs. We used Keil C. the file compiled with no errors and no warnings. The simulator ( Vault information services simulator) worked perfect.


However, when we downloaded the file on the chip, the downloading software produced a strange error:

"ERROR on line 259"



So, what could be the problem? Is it something common?.( Note: the chip is not defective). here is the C source

/*   This code is for the "LED SHOW" project.The idea is to generate the required
squence by only changing the value of a 32 bit variable which is px in this code.
px is an unsigned long int variable.
     The function led_out reads a 32 bit variable which is pn then splits it into
a four 8 bit variables then sends these variables to the four output ports of
8051 microcontroller.
     The function unit_delay reads one 8 bit variables "d" which is the number of basic
delay units. and resultes in delay = basic_delay_unit * d. in this code basic_delay_unit
=.05 sec
	 The function show_generator it's function is to generate the show.you can choose
the number of leds used in the show by the variable "no_of_leds". and you can control
the speed by the variable "delay".and you can choose if the show is inversion or not
-means no_of_leds is on and the rest is off or the inversion- .
     In this code you can choose the required show and it's speed by the input port
P3. by using the following truth tables:
        P3_2	P3_1	P3_0
 	       0  	   0	   0	MIX
		   0	   0       1	One Led
  		   0	   1	   0	Two Leds
		   0	   1       1	Three Leds
		   1	   0	   0 	Four Leds
in mix show no other controls needed

	    P3_3
		   0       Normal Show
		   1	   Inversion Show

	    P3_4
		   0       Normal Show
 		   1	   Show and its Inversion & P3_3 is ignored

		P3_6	P3_5	Delay
		   0       0	50 mS
           0	   1	100mS
		   1	   0	150mS
		   1	   1	200mS

	    P3_7
		   0	   Stop
		   1	   Resume

any other cases out of truth table will be igonred

*/
#include <AT89X51.H>

//time base is a 16 bit no. the lowest 8 bits are time_base_l
//and the highest 8 bits are time_base)_h.
//the time base is the inintial value of timer0 to counts from the time base
//to 0xFFFF which generates .05 sec period
#define time_base_l 0xB0;//lower time base
#define time_base_h 0x3C;//higher time base

unsigned char time_delay;//no. of basic_delay units used unit_delay() & time0() only

//Functions defination
void unit_delay(unsigned char d);

void led_out(unsigned long int pn);

void show_generator(unsigned char no_of_leds,unsigned char delay,bit inversion_enable);

void main(void)
{
	unsigned char show_mode,show_speed,count,i;
	bit inversion,mode_and_inversion;
	//adjusting the control registers
	IP=IP|0x02; //set timer interrupt to have highest priority
	TMOD=TMOD|0x01; //set timer0 into mode 1
	IE=130;//enable interrupts
	inversion=0;
	while(1){
		show_mode=P3 & 0x07;
		show_speed=((P3 & 0x60)>>5)+1;
		if(mode_and_inversion) inversion=~inversion;
		else inversion=P3_3;
		mode_and_inversion=P3_4;
		if(show_mode<=4 && show_mode!=0) show_generator(show_mode,show_speed,inversion);
		while(show_mode==0){
			inversion=0;
			for(count=1;count<=4;count++){
				for(i=1;i<=4;i++){
					show_generator(i,count,inversion);
					show_generator(i,count,~inversion);
				}
			}
		}
	}
}

void led_out(unsigned long int pn)
{
	unsigned char i[3],c;
    /*i[n] is an array of four 8 bit elements that the 32 bit variable pn
	will split into.such that the LS 8 bits of pn will be stored in i[0]
	and the next 8 bits will be stored in i[1] and so on.
	and c is a counter vairable used in for loop. */
	for(c=0;c<3;c++){
		i[c]=(pn >> (c