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Article View: comp.os.msdos.misc
Article #24

Re: More than 4 com-ports under Ms-dos 5.0??

#24
From: George Pontis
Date: Wed, 28 Oct 1992 05:11
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MSUORANTA@finabo.abo.fi (Mika Suoranta Tkkk) writes:

> 
>        MORE COM-PORTS??
> 
>        Does anyone know how one could possibly have
>        more than 4 Com-ports in one computer? I've an 286
>        machine running under Ms-dos 5.0 and as far as I
>        understand the operating system sets the limit.
>        
>        I have to connect:
>        1)      printer (my printer doesn't have parallel)
>        2)      mouse
>        3)      telephone modem *)
>        4)      packet radio modem
>        5)      RTTY-modem
>                
>                *) this goes to an expansion card slot but
>                still takes one interrupt address
> 
>        Could there be some special device driver which would
>        permit more ports in expansion cards? I don't quite
>        like the idea of a big switch  for some external
>        devices -  even if I don't have to have all of them
>        connected and running the 
> 
>                thanks,
>                                Mika OH1NZQ


Mika,
With regard to your mouse ... It is possible to get a bus mouse, and set it
for either IRQ2 ( on an AT ) or IRQ5 ( if you don't have a second parallel
port ). I have a Microsoft bus mouse installed in exactly this manner, using
the latest version of the driver, 8.20. One caveat with IRQ2: make sure that
your EGA/VGA does NOT use IRQ2. If it can be disabled on the graphics card,
then do it! There's essentially no software that uses the interrupt from an
EGA.
-- 
George Pontis ( geo@netcom.COM )
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Message-ID: <1992Oct28.051136.355@netcom.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!usenet.coe.montana.edu!decwrl!csus.edu!netcom.com!geo
References: <1992Oct27.160957.2524@abo.fi>

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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!usenet.coe.montana.edu!decwrl!csus.edu!netcom.com!geo
From: geo@netcom.com (George Pontis)
Newsgroups: comp.os.msdos.misc
Subject: Re: More than 4 com-ports under Ms-dos 5.0??
Message-ID: <1992Oct28.051136.355@netcom.com>
Date: 28 Oct 92 05:11:36 GMT
Article-I.D.: netcom.1992Oct28.051136.355
References: <1992Oct27.160957.2524@abo.fi>
Organization: Netcom - Online Communication Services  (408 241-9760 guest)
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