> Apologies.  I'd noticed that I missed out the kernel config.  If you add :
> 
>   ## Additional auxiliary system registers on Sparcbook
>   auxiotwo0       at obio0                                # sun4m
> 
> to your kernel config, make depend && make, all should be well.  I will add
> this to the TADPOLE config when I commit the files (very shortly, I hope).
> 

Did this & it worked.  I have a Sparcbook with working serial ports now.
I'm not getting any of the garbage on the serial ports...they seem to
work.  I am, however, getting all the wacky stuff from /dev/modem.