From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 29 Aug 1995 17:32:01 -0400
From: presotto@plan9.att.com presotto@plan9.att.com
Subject: No subject
Topicbox-Message-UUID: 1d010034-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19950829213201.BXbexbPX6gNmrwnMlRM4xKqNjfv2yZlyuJjp-Ge-vBE@z>

!	I have received the CDROM today, and I have seen that the
!serial interface driver for PCs doesn't support the 16550 UART. (Buffered) 
!which is mandatory for high-speed modems.
!
!	I'm considering adding the 16550 support if noone else is already 
!doing it; is anyone doing it already? It's a really nice chip, with a 
!16 character input buffer, and almost identical to the 8250/16450.
!(You can even substitute a 16450 for a 16550)
!
!	Borja.

The shipped driver supports fifo's.  The comment at the top
says 16450 but we typically use 16552's.  The code will turn
on the fifo's if you turn on modem flow control
(e.g. echo m > /dev/eia0ctl).  You can make it the default
if you want, but that screws up serial mice.