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000434_news@columbia.edu_Thu Dec 15 00:52:03 1994.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Any way to get Commo-like screen updating speeds with MS-Kermit?
Date: 15 Dec 1994 00:52:03 GMT
Organization: Columbia University
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In article <3cngvf$7qn@apakabar.cc.columbia.edu>,
Yeechang Lee <ycl6@columbia.edu> wrote:
>I know Kermit's written with assembly, and I presume Commo is as well.
>Any hopes of speeding up the screen updates under Kermit in the future?
>
I'll have to take your word that Commo updates your screen faster than
Kermit does, but on my own PC (on which I usually run MS-DOS Kermit
under plain DOS over an Ethernet connection), it's hard to imagine how
the screen updates could possibly be any faster. If I (for example)
refresh the EMACS screen that I'm in right now by typing Ctrl-L, the
entire screen is painted instantaneously). So I would say that the
screen-updating method is not a bottleneck.
On slow PCs, the CPU is a likely bottleneck. In that case, you are
looking at tradeoffs. Kermit's emulator does a lot more (I'm willing to
bet) than Commo's emulator. A VT320 is an astoundingly complex terminal
compared to ANSI or VT100.
Also, I wonder if Commo runs in an MS-Windows window? Kermit does, and
must take additional steps in order to do so.
Back in the old days, when XTs were current, MS-DOS Kermit was a lot
smaller and did less. Like PCs and all the other software that runs on
them, it has grown with the times.
But at least it still runs on XTs, which is something you probably can't
say about most other popular PC software.
- Frank