serial io, newton

[Mark Gross <mdg@sigi.cs.colorado.edu>]

Friends,
I am using the serial-streams examples file to read and write graphics
(x,y point streams) between two Macs -- with perfect success.  

Now I want to do same with a Newton.  Have written the NewtonScript
code to do the io, but keep gettting weird errors that look like
framing errors, dropped bytes.  

Have matched all the serial params, (stop bits, baud rate, hardware 
handshake, etc.) but can't shake the bugs.  

Anyone have insight into what is going on here?
-Mark