INT0 Priority

Hi all, am i able to set- INT0 High Priority?

Higher than what ? What problem are you trying to solve ?

heixin: Hi all, am i able to set- INT0 High Priority?

There is no setting for interrupt piority on this processor, it is all defined in hardware.

It's the highest priority interrupt anyway. Why do you want to make it higher?

http://www.gammon.com.au/interrupts