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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!houem!marty1
From: marty1@houem.UUCP (M.BRILLIANT)
Newsgroups: net.micro.trs-80
Subject: How Does Supermod4 Work With Terminal Programs?
Message-ID: <406@houem.UUCP>
Date: Fri, 1-Nov-85 16:22:24 EST
Article-I.D.: houem.406
Posted: Fri Nov  1 16:22:24 1985
Date-Received: Sun, 3-Nov-85 05:03:36 EST
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 22

I'm puzzled by a review of Supermod4 in the 9/85 80-Micro. It says
Supermod4 enables certain Model 4 features, including the 80x24
screen, on a Model 4 running a Model III DOS.  I'm using both a
Model III and a Model 4, but I don't have disks so I can't figure
out the following puzzle myself.

The reviewer says it works well with TBBS bulletin-board software
and with Microterm.  He also says its video features work only with
programs that use the built-in video drivers.  But the built-in
video drivers disable interrupts, so if a terminal program uses
them it drops characters (generally right after carriage-returns)
at 1200 baud or faster.  I know of two fast home-brew terminal
programs and they both have their own video drivers.

So if Supermod4 works with TBBS and Microterm, does that mean TBBS
and Microterm use the built-in video drivers, and therefore drop
characters at 1200 baud, or do they have a trick I don't know about?

		M. B. Brilliant		houem!marty1
		39 McCampbell Road
		Holmdel, NJ 07733	(201)-946-8147
		AT&T-BL Holmdel, NJ	(201)-949-1858