Hello all, I/O instructions are different from other instructions because there isn't any way to recognize them as i/o patterns, I guess in AVR this is possible because AVR has memory mapped i/o. So its is possible to write something like
PORTA = 0xff But i couldn't find out much about other targets. For the particular target that i am porting i was able to implement 'in' instructions using builtins. So it is possible to do short k = __IN(PORTC); My question is will it be possible to implement the same for OUT instruction also. When implemented as a builtin it is not possible to do something like short k; __OUT(port no) = k; So hoe can i do that. Is inline assembly the only solution? Thanks for your time. Regards, Shafi
