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From: sandersr@ecn-pc.UUCP (Robert C Sanders)
Newsgroups: net.micro
Subject: Re: 19.2KB terminal emulation
Message-ID: <615@ecn-pc.UUCP>
Date: Sun, 3-Aug-86 04:43:03 EDT
Article-I.D.: ecn-pc.615
Posted: Sun Aug  3 04:43:03 1986
Date-Received: Mon, 4-Aug-86 00:55:16 EDT
References: <2718@brl-smoke.ARPA>
Reply-To: sandersr@ecn-pc.UUCP (Robert C Sanders)
Organization: Electrical Engineering Department , Purdue University
Lines: 28

In article <2718@brl-smoke.ARPA> prindle@nadc.arpa writes:
>Ah yes, software emulation of a smart terminal.  Rest assured that parsing
>the terminal control sequences for a VT100 (ANSI Standard) terminal is non-
>trivial (as comapred to a VT52 for example).  The sequences are neither of
>fixed length, nor do they end in a terminating character.  Furthermore, the
>actions to be taken are quite variable.  [ ... ]
>-- Frank Prindle

Another possibility is to emulate the Heath/Zenith H19 terminal; it is a
superset of the VT52, with most (if not all) of capabilities that VT100
emulators include.  The escape sequences are mostly the same length (\Ex
where x is the command; sometime two letters long), and are shorter than
their ANSI counterparts; and the commands more closely match the hardware
considerations of most micros.

As a matter of fact, any body know how well the rugged H19 does at 19200?
I know the keyboard leaves much to be desired, but ...

I rewrote the ANSI.SYS driver in an MS-DOS machine to emulate a superset
of the H19 (really the Z100 sequences), and it turned out faster because
of the less storage and processing required by the program.

-- 
Continuing Engineering Education Telecommunications
Purdue University 		...!ihnp4!pur-ee!pc-ecn!sandersr

Let's make like a BSD process, and go FORK-OFF !!	-- bob
(and "make" a few children while we're at it ...)