AVR-Chat

--- In AVR-Chat@yahoogroups.com, "s_shahab_r" <s_shahab_r@...> wrote:
>
> In mega16,I can read the GIFR register but I can't write to GIFR 
> register(to write to external interrupt bits)and this instruction 
dont 
> write to this register:
>   out 0x3a,r24


Did you include the definition file?

The other thing is, writing 1's to the bits clears them.
You can't actually set the bits this way.