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From: afb3@hou2d.UUCP (A.BALDWIN)
Newsgroups: net.arch
Subject: Re: dumber terminal device drivers
Message-ID: <524@hou2d.UUCP>
Date: Mon, 1-Apr-85 16:54:53 EST
Article-I.D.: hou2d.524
Posted: Mon Apr  1 16:54:53 1985
Date-Received: Tue, 2-Apr-85 07:21:55 EST
References: <327@piggy.UUCP>, <2536@nsc.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 22

Response to Jon  Hyshpan's "Pick your own terminator tty read"
which was a response to Daryl Monge's "one character at a time tty read"

Flames not withstanding (I'm really a UN*X lover too),
the method you discribe (re: 256 bit mask for terminators) 
has been used in RSX-11M and VMS for quite a few years.  It is
called "read with special terminators".  Another useful "special"
tty "read" function is "read with escape sequences".  Both RSX
and VMS have this type of modifier to terminal I/O calls (QIO's
anyone?).  That's how EDT and other screen oriented junk is done in
DEC-land.  If you don't think this can reduce overhead, try inplmenting
a "dumb" terminal or "file transfer" program over an async. without
them.

Excuse me while I don my fire retardent suit.

Al Baldwin
AT&T-Bell Labs
...!ihnp4!hou2d!afb3


[These opinions are my own....Who else would want them!!!]