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'4 COM ports'
1997\04\21@234003 by Ed Todd

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I have 4 ports running happily:

My pentium motherboard lets me configure IRQ's and addresses for 2 ports.
One port died.  I changed the IRQ's of the survivor to something other than
the standard 3, 4 (I think it's on 10 right now)

I have an internal X2 upgradable modem (they are a bit backlogged shipping
the upgrades, ho, hum) that is plug and play, it will find its own IRQ: I
think I'm using 9 right now.

I have a standard adapter with 2 serial ports using standard IRQ's 3 & 4.

I can use all 4 ports at once.  My machine is really tight on IRQ's now, no
spares.  Fortunately, I have a SCSI board, so any new peripherals (TR4
tape, CD-R, etc) I get in SCSI form.

So, if you want a lot of COM ports, your problems are:
- you need one IRQ for each port that is to be used at the same time.  You
need to learn which IRQ's are
 really available and which are reserved for 'internal use'.  If you use
Win/95, the System Resource Report
 shows this on page 1: IRQ summary.
- each port needs its unique I/O port address.  This is usually not a
problem.
- you need to be able to configure hard/firmware of each port to use the
selected IRQ and address.  Some
 adapters/motherboards let you do this, some do not.  You may need to shop
around for a good adapter
 that lets you configure IRQ's.
- you need to tell the PC operating system to use the allocated IRQ for
each specific port.  I use Win/95,
 and it can be done there.

 <spam_OUTedtoddTakeThisOuTspamsni.net>    Ed Todd

1997\04\22@113629 by Gerhard Fiedler

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At 09:04 21/04/97 -0600, Ed Todd wrote:
>- you need one IRQ for each port that is to be used at the same time.  You
>need to learn which IRQ's are

There are, for those who need it really badly, some multi serial boards
with drivers out there which allow you to put all (like 4 or 8) their
serial channels on one interrupt. Their driver then handles this and maps
it to the different Windows COM ports.


'4 COM ports'
1997\05\24@221222 by Martin Buchholtz
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face
Any clue as to who makes these boards ??

Thanks,

Martin

----------
> From: Gerhard Fiedler <.....GerhardKILLspamspam@spam@POBOX.COM>
> To: PICLISTspamKILLspamMITVMA.MIT.EDU
> Subject: Re: 4 COM ports
> Date: Monday, April 22, 1996 8:34 AM
>
> At 09:04 21/04/97 -0600, Ed Todd wrote:
> >- you need one IRQ for each port that is to be used at the same time.
You
> >need to learn which IRQ's are
>
> There are, for those who need it really badly, some multi serial boards
> with drivers out there which allow you to put all (like 4 or 8) their
> serial channels on one interrupt. Their driver then handles this and maps
> it to the different Windows COM ports.

1997\05\24@222053 by Bo Berglund

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face
part 0 949 bytes
Cheers!

Bo Berglund
PaddelvŠgen 10, S-17545 JŠrfŠlla, Sweden
e-mail: .....bo.berglundKILLspamspam.....mailbox.swipnet.se


----------
From:   Martin Buchholtz[SMTP:EraseMEmtechspam_OUTspamTakeThisOuTGTE.NET]
Sent:   den 25 maj 1997 04:09
To:     PICLISTspamspam_OUTMITVMA.MIT.EDU
Subject:        Re: 4 COM ports

Any clue as to who makes these boards ??

Thanks,

Martin

----------
> From: Gerhard Fiedler <@spam@GerhardKILLspamspamPOBOX.COM>
> To: KILLspamPICLISTKILLspamspamMITVMA.MIT.EDU
> Subject: Re: 4 COM ports
> Date: Monday, April 22, 1996 8:34 AM
>
> At 09:04 21/04/97 -0600, Ed Todd wrote:
> >- you need one IRQ for each port that is to be used at the same time.
You
> >need to learn which IRQ's are
>
> There are, for those who need it really badly, some multi serial boards
> with drivers out there which allow you to put all (like 4 or 8) their
> serial channels on one interrupt. Their driver then handles this and maps
> it to the different Windows COM ports.


1997\05\25@115415 by John Griessen

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face
for 4 com ports w/ drivers also try WCSC.  It's a low cost solution.

http://www.wcscnet.com/pricing.htm

1997\05\25@150441 by Bo Berglund

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face
part 0 376 bytes
Cheers!

Bo Berglund
PaddelvŠgen 10, S-17545 JŠrfŠlla, Sweden
e-mail: RemoveMEbo.berglundTakeThisOuTspammailbox.swipnet.se


----------
From:   John Griessen[SMTP:spamBeGonejohn_gspamBeGonespamCIBOLO.COM]
Sent:   den 25 maj 1997 17:44
To:     TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU
Subject:        Re: 4 COM ports

for 4 com ports w/ drivers also try WCSC.  It's a low cost solution.

http://www.wcscnet.com/pricing.htm


1997\05\25@151854 by John Griessen

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At 09:02 PM 5/25/97 +0200, you wrote:
>But does it use one IRQ for allports or not?
>
>for 4 com ports w/ drivers also try WCSC.  It's a low cost solution.
>
>http://www.wcscnet.com/pricing.htm
>
The WCSC board does allow setting one for all, or separate IRQ's, and any
one of them.

JG

1997\05\25@161755 by Harold M Hallikainen

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Boca Research makes 4 and 8 port serial boards.  Another company (can't
think of their name right now, but I have some at work) makes an 8 port
board with a dynamic 32K buffer.

Harold



Harold Hallikainen                               phone/fax/bbs +1 805 541
0201
Hallikainen & Friends, Inc.                web
http://slonet.org/~hhallika
PO Box 4737                                         email
RemoveMEhhallikaspamTakeThisOuTslonet.org
San Luis Obispo, CA 93403-4737     email hhallikaEraseMEspam.....broadcast.net
USA                                                       email
EraseMEap621spamcleveland.freenet.edu


On Sat, 24 May 1997 22:09:42 -0400 Martin Buchholtz <RemoveMEmtechEraseMEspamEraseMEGTE.NET>
writes:
{Quote hidden}

1997\05\26@011240 by Martin Buchholtz

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Thanks for the help.  If you can find the other mfr. I wouldn't mind that
one as well


----------------------------------------------------------------------------
-
Martin Buchholtz
ASIC Design, HDLs, Product Design
Simulation, Synthesis and Verification
--------------------------------------------------------------------------

{Quote hidden}

1997\05\28@180539 by L055132

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face
In my own computer at home, I use a JDR Microdevices MCT-4S3P board. It
has worked fine for me. Allows separate IRQ's for each port. The only
down side to this board is the parallel ports are bi-directional and not
ECP/EPP. Just after I bought this board they came out with a MCT-2ES2EP
board which has two 16C650's and two ECP/EPP ports. The board will also
allow you to set up different port base addresses. Other JDR boards
which may be of interest: MCT-4S3P, MCT-4S. You can get the current
prices and specs @ http://www.jdr.com


Frank Richterkessing
Experimental Methods Engineer
GE Appliances

EraseMEFRANK.RICHTERKESSINGspamEraseMEAPPL.GE.COM

"The secret to good housekeeping -- Use low wattage bulbs!"

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