p89v51rd2 code simukation working but after burning not working

I am using following program for P89v51rd2. In Keil simulation is working but when i am burning same using Flash Magic ,it is not working. I have checked Memory Data using Flash Magic It is same as in Keil Debugger.Nothing is working after burning ,no port data updation is taking place. Please help Me.

//Program for RFID based Secured access system using 8051 microcontroller
#include <intrins.h>
#include <p89v51rx2.h>
sfr lcd_data_pin=0xA0;  //P2 port
sbit rs=P1^0;
sbit rw=P1^1;
sbit en=P1^2;


void delay(unsigned int count)  //Function to provide time delay
{
        int i,j;
        for(i=0;i<count;i++)
        for(j=0;j<1275;j++);
}

void lcd_command(unsigned char comm)   //Lcd command funtion
{
        lcd_data_pin=comm;
        en=1;
        rs=0;
        rw=0;
        delay(1);
        en=0;
}

void lcd_data(unsigned char disp)  //Lcd data function
{
        lcd_data_pin=disp;
        en=1;
        rs=1;
        rw=0;
        delay(1);
        en=0;
}

lcd_string(unsigned char *disp)  //Lcd string function
{
        int x;
        for(x=0;disp[x]!=0;x++)
        {
                lcd_data(disp[x]);
        }
}

void lcd_ini()                            //Function to initialize the LCD
{
        lcd_command(0x38);
        delay(5);
        lcd_command(0x0F);
        delay(5);
        lcd_command(0x80);
        delay(5);
}


void main()
{
                                                                // Trigger Timer 1
        lcd_ini();
        lcd_command(0x80);                                      //Place cursor to second position of first line
        lcd_string("Pls scan your ID");
        delay(200);

}

Regards
Manish