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From: Doug Gwyn (VLD/VMB) 
Newsgroups: net.unix-wizards
Subject: Re:  laser printers and 8 bit serial lines with flow control
Message-ID: <8191@brl-tgr.ARPA>
Date: Sun, 10-Feb-85 16:30:40 EST
Article-I.D.: brl-tgr.8191
Posted: Sun Feb 10 16:30:40 1985
Date-Received: Wed, 13-Feb-85 02:21:38 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 4

RAW + LITOUT should give you an 8-bit path with flow control.
As someone pointed out, there is a bug in some (all?) 4.2BSD
implementations of LITOUT such that you may have to do two
sttys in succession to get all the modes working at once.