&HBF = NOT &H40
&H7F = NOT &H80
Code:
GIFR = GIFR AND &HBF löschen INT0 
x1xxxxxx GIFR
10111111 &HBF
x0xxxxxx 

GIFR = GIFR OR   &H40 setzen   INT0 
x0xxxxxx GIFR
01000000 &H40
x1xxxxxx 

GIFR = GIFR AND &H7F löschen INT1
1xxxxxxx GIFR
01111111 &H7F
0xxxxxxx 

GIFR = GIFR OR   &H80 setzen INT1
0xxxxxxx GIFR
10000000 &H80
1xxxxxxx
klaro ?