Serial I/O

[Michael Zhang <mzhang@cs.ubc.ca>]

Hello, there,

I am trying to get my serial I/O program work.  I have set up the system
by rt_com_setup function.  Now, I can get some value from the io port and
when I change the input device, the value changes.  My Question is the
number of the value I got doesn't make sense.  Is there anyone can give me
some suggestions?  For example, do I need to initialize the I/O port?  If
yes, will you please tell me how?

Thanks,

Michael