[net.micro.trs-80] How Does Supermod4 Work With Terminal Programs?

marty1@houem.UUCP (M.BRILLIANT) (11/02/85)

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?

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