serial port chips

[<fh...@at...>]

It seems there are a number of serial cards for the Amiga, that use the
same serial port chip or clones thereof.  I have a Hypercom 4+ board that
uses the same chip (basically) as the GVP I/O extender. Is there a way to
use these chip routines, so I don't have to  wedge them into a new driver?

I'd explain this better but I'm short on time at the moment.

Fred