Win32 IXXAT driver:
CHANGED: - Removed deprecated call to VCI_GetBrdTypeByName().
- The board type given to VCI2_PrepareBoard() is now always 0, because this parameter is not used.
- Removed the board_name parameter from IXXAT::open(). The board that should be opened is identified by the parameter board_number.
The correct parameter board_number can be determined using XAT_EnumHwEntry() and XAT_GetConfig().
- Changed the constructor IXXAT::IXXAT(). board->busname now only contains the board_number, see XAT_EnumHwEntry() and XAT_GetConfig().

/* 
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)
*/