In ALTERA Monitor it works, in Eclipse EDS it doesn't?

PROBLEM SOLVED

Hello

For those who have the same problem with me, the issue was that I haven't included the header files

system.h
altera_avalon_pio_regs.h

which describe the compiled Qsys system and let me access defined structures like my parallel ports as well as the function IOWR_ALTERA_AVALON_PIO_DATA that writes at the parallel ports.

So the simple program described in the Introduction to the Qsys system tutorial:

# define switches (volatile char *) 0x0002000
# define leds (char *) 0x0002010
void main()
{ while (1)
*leds = *switches;
}

Should be in the Nios II EDS:

# include "system.h"
# include "altera_avalon_pio_regs.h"
int main()
{ 
  /* Event loop never exits. */
  while (1) {
	  IOWR_ALTERA_AVALON_PIO_DATA(LEDS_BASE, *((char*)SWITCHES_BASE));
  }
  return 0;
}

cheers