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nokia 3310 lcd display question

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bigreat

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lcdupdate nokia 3310

i use atmega32l control nokia 3310 lcd.
the code is from microsyl.
these is my main code:
Code: 
#include "iom32.h"
#include "nokialcd.c"
void delay(unsigned long int);
int as;

void main()
{
LcdInit();     //init 3310 LCD
LcdClear();    //clear 3310 LCD
LcdUpdate();   //move cache data into RAM LCD

  while(1)
  {
  LcdGotoXY(5,6);
  LcdStr(1,"BiGreat");
  delay(60000);
  LcdUpdate();
  LcdClear();
  LcdGotoXY(9,0);
  LcdStr(1,"myasdfasfd");
  LcdUpdate();
  }
}


void delay(unsigned long int delayValue)
{
unsigned long int a;
for(a=0;a<delayValue;a++);
}

but is can't display clearly what i want display.the 3310 is coruscated and coruscated during the power on.
the picture is about the 3310 display.

please help me.
thanx
 

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