Fixed incorrect struct access in sendPDO() and inserted a missing variable in sendOnePDOEvent(). These errors occured at compile-time when configuring the project with './configure --debug=PDO' or './configure --debug=WAR'.
/*
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)
*/