Make a LED flash with Atmega32

Hello,
I wish to make a LED flash with Atmega32.
I banged the program WinAVR, I compiled him and sent on the flash memory of Atmega32 successfully.
But, nothing works.
I noticed that the hexadecimal file and the contents of the memory are not identical.
What that can be.
I tried with AvrStudio, the same result.
Thank you.

The program is :

#include <avr/io.h>
#include <util/delay.h>
int main(void)
{
	DDRD = 0b10000000;

	while(1)
	{
		PORTD = 0b10000000;
		_delay_ms(1000);
		PORTD = 0b00000000;
		_delay_ms(1000);
	}
	return 0;

}

As such a simple test does not work we will need your full
circuit diagram.
Are you sure the LED is the right way round ?

You need to provide CPU frequency for _delay_ms() function to work properly.

/* F_CPU must be defined to your CPU frequency */
#define F_CPU 4000000UL /* This is just example 4Mhz */
#include <avr/io.h>
#include <util/delay.h>