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From: sbanner1@uvicctr.UUCP (S. John Banner)
Newsgroups: comp.sys.ibm.pc,comp.protocols.tcp-ip.ibmpc
Subject: Re: Mapping ETHERNET to COM(n)
Message-ID: <469@uvicctr.UUCP>
Date: 22 Aug 88 17:40:25 GMT
References: <142@pbseps.UUCP> <224@slxsys.specialix.co.uk>
Reply-To: sbanner1@uvicctr.UUCP (S. John Banner)
Organization: University of Victoria, Victoria B.C. Canada
Lines: 40

In article <224@slxsys.specialix.co.uk> jpp@slxsys.specialix.co.uk (John Pettitt) writes:
>From article <142@pbseps.UUCP>, by rdp@pbseps.UUCP (Richard Perlman):
>> I am looking for a program/patch/utility that would allow me to
>> use IBM-PC software (i.e. Crossstalk, MS-Windows, Symphony etc.)
>> with a psuedo port on an ethernet instead of the expected 
>> standard serial port COM(1,2).  I want to "talk" with a tcp/ip
>> host (running NFS if that matters).
>> 
>> The sysem is a standard IBM-PC/XT with a Western Digital WD8003E
>> ethernet board.
>
>The short answer is that it can't be done !
>
>Most  dos comms programs use some inbuilt driver
>that bit twiddles the uart (com1 or com2) directly,  
>your ethernet virtual port would have to be a full hardware
>level emulation of a 16450 uart.  
>
>This is a common problem, we make intelligent serial 
>cards for PC/AT type boxes and have a similar problems:
>We don't look like a uart so the software wont talk
>to us.
>
>There are two solutions that I know of:
>
>1) ASCOM - sorry don't know the authors - will let you
>write your own uart interface.
>
>2) 386 virtual 8086 mode, i.e. fake a uart in software
>(n.b. this is not simple :-)

Also, MS-Kermit V 2.30 and up supports NetBIOS, as well as the Ungerman-
Bass ethernet cards (for the UB support you might have to get 2.31).

                      S. John Banner

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