CODEVISIONAVR code on hardware

[vvarlord]

hi
i'm writing codes using codevisionavr c compiler for atmega 8 and then program it on the atmega using stk500/isp programmer on an atmega8
the problem is i've got 2 simple codes, for making PORTD.2 pin of avr 1 and 0, and toggle it continiuesly.
the two codes are exactly the same but one of the makes the pin 5 volts and 0 volts , and the other one makes it 1.8 volts and 0 volts
the hardware and setting of codeviosion for both are the same but two diffrent results is wierd.
code 1 (5v~0v):

#include <delay.h>
#include <mega8.h>
 
void main(void)
{
 DDRD=0x04;
 while(1)
 {PORTD.2=0;
 delay_ms(100);
 PORTD.2=1;
 delay_ms(100);
}}

code 2 (1.8v~0v):

#include <delay.h>
#include <mega8.h>


void main(void)
{
DDRB=0x04;
while(1)
{PORTD.2=0;
delay_ms(100);
PORTD.2=1;
delay_ms(100);
}
}

any help would be appreciated.

- - - Updated - - -

i've also run those codes on the same hardware in simiulation of isis proteus , and incredibely got 2 diffrent results
i've tried to run codevisionavr wizard to create the codes but it gives me the (1.8v~0v) result.
could my codevisionavr software been corrupted?

 

[DeepOne]

hi.
second code - portD configured as input, and for this configuration only pull-up resistor is available

 

[vvarlord]

I think my brain is damaged seriously!!!
thanks any way