[avr-chat] Need help with simple inline assembly code

[Reza Naima]

I'm trying to generate a very fast (10mhz-ish) bit train from an avr 
running at ~15mhz.  The only way i can think of doing it is using inline 
assembly.  I've been trying to compile something like tihs, but I'm 
getting no love.  Any suggestions?

thnx,
reza

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
#include <avr/pgmspace.h>
#include <avr/delay.h>
#include <inttypes.h>
#include <stdio.h>


int main(void) {
       while(1) {
               asm volatile("out %0, %1":: "I" 
(_SFR_IO_ADDR(PORTD))),"M" (254);
               asm volatile("nop"::);
               asm volatile("out %0, %1":: "I" 
(_SFR_IO_ADDR(PORTD))),"L" (0);
               asm volatile("nop"::);
               asm volatile("out %0, %1":: "I" 
(_SFR_IO_ADDR(PORTD))),"L" (0);
               asm volatile("nop"::);
               asm volatile("out %0, %1":: "I" 
(_SFR_IO_ADDR(PORTD))),"M" (254);
               asm volatile("nop"::);
               asm volatile("out %0, %1":: "I" 
(_SFR_IO_ADDR(PORTD))),"L" (0);
               asm volatile("nop"::);
       }
       return 0;
}