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Posting-Version: version B 2.10.2 9/18/84; site watcgl.UUCP
Path: utzoo!watmath!watcgl!dmmartindale
From: dmmartindale@watcgl.UUCP (Dave Martindale)
Newsgroups: net.unix
Subject: Re:  LaserJet printercap for BSD 4.2? (8 bits + flow control)
Message-ID: <637@watcgl.UUCP>
Date: Mon, 3-Dec-84 04:12:27 EST
Article-I.D.: watcgl.637
Posted: Mon Dec  3 04:12:27 1984
Date-Received: Tue, 4-Dec-84 06:26:20 EST
References: <6136@brl-tgr.ARPA>
Organization: U of Waterloo, Ontario
Lines: 16

> > The problem is fundamental: if you
> > receive an XON or XOFF, how do you decide if it is part of the data or
> > a flow control instruction from the other machine?  You just cannot
> > transmit flow-control instructions along with all-256-codes-valid data
> > on the same wire without some sort of additional encoding being done.
> 
> Give me a break.  What does processing control-S and control-Q have to
> do with whether the incoming character is and-ed with 0177?  Why cant
> I have a mode that gives me all eight bits and XON and XOFF processing.
> This would be 254 bits processed instead of the normal 126 bits that you
> get with LITOUT or RAW off.
> 
Sure you can do this, with a bit of hacking of the tty driver.
What's it useful for?  Anything I've ever seen that wanted to transmit
8-bit ASCII wanted to be able to send all 256 codes, not restrict itself
to 254.