[avr-gcc-list] Timer0 interrupt on Mega128

[Jan Menzel]

Hi all!
	I'm trying to generate interrupts using timer0 on a Mega128 but 
unfortunately can't see any change in overflow and capture/compare 
flags. This is the code I tried (compiled using WinAVR 20081205):

TCCR0 = _BV(CS02);

cli();
while (1)
{
        if (TIFR & _BV(OCF0))
        {
                DEBUG_PORT ^= _BV(DEBUG_PIN);
                TIFR |= _BV(OCF0);
        }
}

I tried the same with TOV0 flag without success. If I read the counter 
register TCNT0 I can see the counter counting from 0x00 to 0xff. I 
verified in the list file that all registers and bits are correct. 
Surprisingly the code works well if changed to timer2.
        Can anyone give me a hit why timer0 is not raising this flags in my 
code?

        Kind regards
                Jan