poblem with LCD

this is my lcd code for sending aletter . but iam not getting data on display
can any one tell what is the problem with this code.

#include <AT89X51.H>
#include<stdio.h>
void delay(unsigned int d);
void display(unsigned char a);
void initial(unsigned char b);
unsigned int d;
unsigned char a;
unsigned char b;
unsigned int j;
unsigned int i;
void main()
{

initial(0X38);
delay(50);
initial(0X0f);
delay(50);
initial(0X01);
delay(250);
initial(0X06);
delay(50);
initial(0X80);
delay(150);
while(1)
  {
        display('a');
        delay(150);
  }
}


void delay(unsigned int d)
{
  for(i=0;i<=d;i++)
   for(j=0;i<=1275;j++);
}
void display(unsigned char a)
{
 P1=a;
 P0_5=1;
 P0_6=0;
 P0_4=1;
 delay(10);
P0_4=0;

}

void initial(unsigned char b)
{
 P1=b;
 P0_5=0;
 P0_6=0;
 P0_4=1;
 delay(10);
 P0_4=0;

}

.