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000323_news@newsmaster….columbia.edu _Mon Sep 8 22:24:17 1997.msg
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From: jrd@cc.usu.edu (Joe Doupnik)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: MS-DOS Kermit/DOS-Emu
Message-ID: <Qn8tFrLe4hLK@cc.usu.edu>
Date: 8 Sep 97 19:33:16 MDT
References: <TCPSMTP.17.9.8.2.14.44.2375661496.4677359@kincyb.com> <h$+knUEnas3W@cc.usu.edu>
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In article <h$+knUEnas3W@cc.usu.edu>, jrd@cc.usu.edu (Joe Doupnik) writes:
> In article <TCPSMTP.17.9.8.2.14.44.2375661496.4677359@kincyb.com>, dallasii@kincyb.com writes:
>> [I'm cross-posting this to several forums where I think it will be
>> appropriate for discussion.
>> I apologize to anyone who finds it inappropriate.]
>>
>> Question:
>>
>> 1) MS-DOS Kermit requires direct access to COM ports.
>
> Is that a question or a statement?
> If the latter the answer is no. If you read the manual please
> discover that MSK can run over networks and to serial ports via slow
> simple-minded BIOS calls. I don't recommend SET PORT BIOSx, but it is
> there and works.
>
>> 2) LINUX DOS-Emu does not allow direct access to PC COM ports.
>>
>> 3) Therefore, MS-DOS Kermit cannot funtion in the LINUX DOS-Emu
>> environment?
>
> The logic is faulty. I don't use Linux so I can't help you with
> that part of things. If you have an emulator which simulates the serial
> port hardware then MSK will probably run. Complaints on that to makers
> of simulators. In general, Unix does not permit use applications to touch
> the hardware because the hardware belongs to more than one user app.
> The Kermit of choice for Unix systems is C Kermit.
> Joe D.
---------
Adding a bit more in case folks remain puzzled.
A DOS emulator emulates DOS, as expected. But no comms program in its
right mind uses DOS to perform communications i/o. DOS doesn't have the
facilities. The programs which try to use the PC Bios, INT 14h, get on a
little better but not by much. That's why serial comms on PCs go straight
to the serial port hardware.
Thus even a Bios emulator doesn't help much. One needs an emulator
of the hardware. Surprizingly such things exist, and MS markets them as
MS Windows.
Joe D.