more than 4 com-ports

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2 total messages Started by david wess Tue, 03 Nov 1992 11:46

#13

Author: david wess
Date: Tue, 03 Nov 1992 11:46

31 lines
1669 bytes

MS>        Does anyone know how one could possibly have
MS>        more than 4 Com-ports in one computer? I've an 286
MS>        machine running under Ms-dos 5.0 and as far as I
MS>        understand the operating system sets the limit.

MS>        I have to connect:
MS>        1)      printer (my printer doesn't have parallel)
MS>        2)      mouse
MS>        3)      telephone modem *)
MS>        4)      packet radio modem
MS>        5)      RTTY-modem

MS>                *) this goes to an expansion card slot but
MS>                still takes one interrupt address

MS>        Could there be some special device driver which would
MS>        permit more ports in expansion cards? I don't quite
MS>        like the idea of a big switch  for some external
MS>        devices -  even if I don't have to have all of them
MS>        connected and running the
You can definitely have more than 4 ports, but you will need special
hardware to do it.  A couple of companies make special boards which
enable eight com ports.  These are expensive - in the area of $ 500 or
more.

David Wess
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Re: more than 4 com-ports

#849

Author: Alex Martelli
Date: Mon, 09 Nov 1992 17:10

15 lines
1178 bytes

david.wess@execnet.com (david wess) writes:
	...
:You can definitely have more than 4 ports, but you will need special
:hardware to do it.  A couple of companies make special boards which
:enable eight com ports.  These are expensive - in the area of $ 500 or
:more.

I've seen an ad by a company called "BOCA Research" who's selling an
8-port board for $295; according to their ad, their competitors are
indeed more costly.  I don't know how well their board actually works
or anything else about it or them (indeed, I wouldn't mind *learning*
something!)...
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