> sending what I though it was.  The default clock turned out to be
> right after all.
>
> The next thing on the list to investigate is if I can get the kernel
> to run it as a 16650 and use all 32-bytes worth of FIFO.  I added the
> following option and rebuilt, but the chip still gets identified as a
> 16550.
>
> 	  options		COM16650
this option works. that mean that chip isn't really 16650 compatible