[avr-gcc-list] c++ & atmega64

[Serhan Gürmeriç]

Hello,

I'm trying to simulate this code in proteus 7.1 with atmega64. It runs 
well if I compile it with -mmcu=atmega16 parameter by avr-g++. Problem 
is that same code doesn't work (i can't see any signal on pins), if i 
change mmcu to atmega64 without any other changes in circuit or code.

What is my fault?
Thanks

code:
---------------------------------------------------
int main(void)
{
 CS6B0108LCD lcd;

   DDRA=255;DDRB=255;DDRC=255;
  
   lcd.DisplayOn();
   while(1)
   {
     PORTA=0;
     PORTA=255;
   }
 return 0;
}