Added some fixes from Jaroslav Fojtik submitted on sourceforge bug tracker:
3096348 Missing "break" in states.c/canDispatch()
3096359 Crash inside dcf.c/send_consise_dcf()
3101891 Potencial overflow inside getNodeState()
/* Define the i/o port global symbol */.globl _io_ports_io_ports=0x0000 /* 0x0000 is the default mapping at reset. (it is 0x1000 for 68hc11)*/