🚀 go-pugleaf

If you are porting your program to Windows, you'll not have to use
an add-on library: Windows provides drivers for the serial ports
(and you *must* use the Windows included drivers), so the user may
choose the configuration for comunication outside yoyur application 
(make it common for all the programs).

In DOS: if you're thinking on sending only text I may suppose that you
will not do full-speed transfers (if you did: why not compress the information
and send this in binary form :-), but that's what I'm assuming on your
problem), you may use the build-in function of Borland C++ (don't have
the reference here, but I think it's the bioscom function).

Another thing you can do is download from simtel a file in the directory
of <msdos.cplusplus> called serial-1.zip

Hope it works!

Miguel de Icaza
Universidad Nacional Autonoma de Mexico.