Trying to load some examples for blinking LED i got 2 different types of 
code for it:
1. 

While (1) {
   __R30 |= (1 << R30_out_bit );

   delay(10000000);

   __R30 &= ~(1 << R30_out_bit );
}


R30_out_bit = 0 (P8_45 pin)


2.

while(1) {
   __R30 ^= 0x000F; 
   delay(10000000); 
}


What the difference beetwen these two and why the first one dosen't working 
properly (no blinking at all)?   


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