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000170_news@columbia.edu _Fri Oct 8 18:24:46 1999.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Subject: Re: MS-Kermit Talking on 2 Ports?
Date: 8 Oct 1999 22:06:47 GMT
Organization: Columbia University
Message-ID: <7tlptn$gvb$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <37fe44bc.1767178@news.mcs.com>,
Ron Heiby <heiby_u@falkor.chi.il.us> wrote:
: I have an application that must run in a DOS environment no a "586" class
: processor. I do not have any particular need for file transfer in this
: application, but I do need to be able to read from and write to two serial
: ports, non-blocking, pretty much full-time. The data needs and rates should
: be fairly reasonable, and I do not anticipate having any problems "keeping
: up".
:
: I would like to not have to write the application from scratch. I figure that
: I should be able to handle everything I need to do within Kermit macro
: language.
:
: However, I haven't been able to find a reference to being able to have more
: than one serial port active at a time. Is this possible?
:
No. Most Kermit software can only handle one connection at a time.
One Kermit program, MS-DOS Kermit in fact, can handle multiple connections
simultaneously, but only TCP/IP connections, not serial ones.
In cases where people want to have multiple Kermit sessions, they normally
run multiple copies of Kermit, but of course that's not an option in DOS.
I was thinking it might be possible to write an MS-DOS Kermit script that
could jump back and forth between the two ports, opening and closing the
port each time, but the flaw there is that flow control would need to be
operational on Port 2 while Port 1 is open, and vice versa, and there's no
way to do that.
- Frank