How to use the native driver that comes build into the linux kernel.

    Here are the steps to recompile the kernel in FC6:

    In Linux source directory, e.g., /usr/src/linux-2.6.18 


*	make menuconfig

	In Device Drivers->Character Devices->Serial Drivers->, configure 

	"Maximum number of 8250/16550 serial ports"
	"Number of 8250/16550 serial ports to register at Runtime" 

	to the required number of COM ports and ISI ports


*	make modules
*	make modules_install
*	make install