HDTenEightyP/NetNews huggingface dataset:
From: alex@ee470.ee.mcgill.ca (A. Okapuu-von Veh)
Newsgroups: comp.dcom.modems
Subject: BOCA 14400 at 2400 baud?  Was: Re: BocaModem versions.
Keywords: how to "2400" with the 14.4 ?
Date: 8 Jan 93 03:42:02 GMT
Distribution: na
Organization: EE Lab, McGill University EE Lab, Montreal

In article <930105.220327.EST.KARYPM@SJUVM.BITNET> KARYPM@SJUVM.BITNET ("Paul M. Karagianis") writes:
[Description of BOCAmodem size/shape not corresponding to picture on
 package...]

I was quite surprised by this and by the fact that the manual I got inside
the sealed package was for the BOCAmodem 2400I (!), and that the manual for
the free fax software "Quicklink 2" was quite obviously used and had been
written in.  What kind of deal is this?!

The modem has been working fine at 14400 (and 19200 effectively, the fastest
speed the university here will support "internally") for three weeks now, 
but I can't figure out from the documentation (I got the proper manual after 
the store re-opened after the holidays) how to do a simple no-compression,
no-error-checking connection to a 2400 or a 9600 baud modem. 

Any hints from ppl out there?

Thanks....
Alex

___________________________________________________________________________
|Alexander Okapuu-von Veh                       __o                       |
|alex@ee470.ee.mcgill.ca                       -\<,                       |
|____________________________________________(_)/(_)______________________|
|   EAT RIGHT. GET LOTS OF SLEEP. DRINK PLENTY OF FLUIDS. GO LIKE HELL.   |
|_________________________________________________________________________|
-- 
___________________________________________________________________________
|Alexander Okapuu-von Veh                       __o                       |
|alex@ee470.ee.mcgill.ca                       -\<,                       |
|____________________________________________(_)/(_)______________________|
From: pascal@CAM.ORG (Pascal Gosselin)
Newsgroups: comp.dcom.modems
Subject: Need cheap sync/asynch stat Mux
Keywords: stat mux sync async
Date: 8 Jan 93 04:40:17 GMT
Organization: Communications Accessibles Montreal, Quebec Canada

I'm looking for a recommendation on the following equipment:

I need a pair of two-port statistical multiplexers (RS-232) that will support
async on one port (for a Shiva Telebridge), sync on the other (IBM remote
control unit for AS/400 terminals) that goes into a synchronous leased
line modem (19200bps 4wire setup). Must support hardware handshaking
on all ports, 19,200bps (at least) on all ports.

The goal is to share a 19.2Kbps leased line between AppleTalk and AS/400
terminals at two sites.

Recommendations by email.

Thanks.

-Pascal
-- 
+--------------------------+-------------------------------------------------+
    Pascal Gosselin        |     Communications Accessibles Montreal  
    pascal@CAM.ORG         |  A non-profit corporation.  Newsfeeds & More.   
  Apple Support Specialist |  For info: info@CAM.ORG or Voice (514) 923-2102
Newsgroups: comp.dcom.modems
Distribution: world
Date: Wed,  6 Jan 93 08:10:01 -0800
From: Zero_One@p101.f701.n202.z1.fidonet.org
Subject: Zyxel types (was Re: ZyXEL as answering machine ? (PC-Software))
Comment-To: Wailer_at_the_Gates_of_Dawn@p101.f701.n202.z1.fidonet.org
Reply-To: Zero_One@p101.f701.n202.z1.fidonet.org
X-FSC-PATH: 202/701

 > jeroenp@rulfc1.LeidenUniv.nl (Jeroen W. Pluimers) writes:
 >>BTW: What are the pro's and contra's of the 4 different modem
types?
 >>If my memory serves me right, ther are E, E+, S and S+ types.
 >>I'd like a good recommendation on which to buy (and where to buy
 >>it in The Netherlands or Germany).

 > E model is std 14.4 fax modem
 > S adds a nifty LCD front panel display and some more status
 > indicators

 > X+ models add a faster processor for better compression of
   ^^^^^^^^^
 > voicemail.

ZyXEL does *NOT* offer any modems with an X designator.  X should be
replaced with either an "E" or an "S"

Tyrone Horton
(Zero One)
Tech Support
ZyXEL USA

--- FMail 0.92
 * Origin: ZyXEL USA (1:202/701.101)
From: d9mikael@dtek.chalmers.se (Mikael Wahlgren)
Newsgroups: comp.dcom.modems
Subject: ZyXEL 1496E+ won't answer a call
Date: 6 Jan 93 21:34:32 GMT
Organization: Chalmers University of Technology, Gothenburg Sweden
X-Newsreader: NN version 6.4.19

I just got a ZyXEL U1496E+ with 5.04 ROMs.  I can't get it to recognize
the ring signal.  If I set S0=1 the modem will never answer the call
and there are never any "RING" messages sent by the modem.  The S40 register
is set to zero (0).  Anyone have a clue, or is it just mal-functioning?
I am located in Sweden, but usually there are no problems with the RING-
signal.

Mikael Wahlgren
Newsgroups: comp.dcom.modems
Distribution: world
Date: Mon,  4 Jan 93 10:28:04 -0800
From: Zero_One@p101.f701.n202.z1.fidonet.org
Subject: Does anyone know any mail order place that sells ZyXEL modems ?
Comment-To: Billy_Chan@p101.f701.n202.z1.fidonet.org
Reply-To: Zero_One@p101.f701.n202.z1.fidonet.org
X-FSC-PATH: 202/701

 > Dear all,

    If you know how to mail order a ZyXEL modem, could you please e-
 > mail me
 > the address/1-800-number ?  Thanks in advance.

Give us a call.

1-800-255-4101
714-693-0808

Tyrone Horton
(Zero One)
Tech Support
ZyXEL USA

--- FMail 0.92
 * Origin: ZyXEL USA (1:202/701.101)
Newsgroups: comp.dcom.modems
From: mckeeveb@monashee.sfu.ca (Gumby - The unknown user)
Subject: Re: Upgrading a ZyXEL 1496E to an E+
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Mon, 11 Jan 1993 23:19:18 GMT

clau@acs.ucalgary.ca (Christopher Lau) writes:

>All interesting stuff..   but none of you was listening carefully enough:
>The point I was trying to make was that even if a hardware upgrade ISN'T
>POSSIBLE (with/without great effort), since the DSPs are the things doing
>most of the work, can't some of the E+ features be implemented on an E??
>(I'm under the impression that even though the 68k parts are not running
>the same speed in E and E+ models, the TMS32025 DSPs ARE?)  In this case,
>as long as the 68000 doesn't have to do much, we could probably even force
>an E to do 19200 (although I don't think it will have the horsepower to 
>go up to 76800 with compression- I might be wrong, since an E is supposed to
>be able to go up to 57600 with compression when running in 16.8 mode).
>By the same reasoning, we SHOULD be able to put CELP on an E model as well.
>I don't need the thing to do v.fast (although it would be nice), but some
>of the so-called "advanced" features would be useful.

Probably.

Would anyone be interested in my posting a uuencoded, compressed version
of the 5.04 E-model ROMs DECRYPTED? (you can even read the help screens
in them)

Yes, they play mean, nasty tricks on people by switching the address and
data lines around rather than just feeding them strait into the chip.

-- 
    Rob McKeever  VE7ICJ  rmckeeve@sfu.ca  mckeeveb@sfu.ca  604-291-0457
"Do you know what standards are?  They're career paths for people who don't
 want to work!" - John Parkinson, Ernst & Young at the BCDMA Conference '92
       -*-          Standard Disclaimers should be adequate        -*-
Newsgroups: comp.dcom.modems
From: mmannan@lynx.dac.northeastern.edu (Mohammed Mannan)
Subject: Where to buy the Zyxel modems, CHEAP
Organization: Northeastern University, Boston, MA. 02115, USA
Date: Tue, 12 Jan 1993 04:52:04 GMT

Please email or post the phone numbers of places which give a good
deal on Zyxel modems. I have gone through 700 messages in this
newsgroup but could not find the FAQ.
 
Are there any advantages in buying directly form Zyxel U.S.A.?
 
 
 
Thank you,
 
M. Mannan
Newsgroups: comp.dcom.modems
From: jgreco@solaria.mil.wi.us (Joe Greco)
Subject: Re: AT&T Paradyne thoughts?
Organization: Solaria Public Access UNIX - Milwaukee, WI
Date: Tue, 5 Jan 1993 03:08:34 GMT

In comp.dcom.modems article <1992Dec30.200748.2893@mnemosyne.cs.du.edu>, aburt@mnemosyne.cs.du.edu (Andrew Burt) wrote:
:In looking for a set of modems for our machine (a public access internet
:site), I found what looks like the current best deal -- AT&T Paradyne
:"dataport" v.32bis for $206 each ($222 w/fax) [sysop price, of course;
:says good until end of January].
:
:Does anyone have any thoughts on these?  I've heard nothing but praise
:so far...
:
:Anyone have these?  Are they fantastic?  Junk?

I don't know, but I'm putting up some money for one (potentially more in the
future).  The USR modems I have now are trash (quite old, neither works at
all well especially with newer HS modems) so I expect that almost anything
will be an improvement.  I like the price and I know the mfr has a good
reputation for data products. 

Anyways, it might be useful for you, Larry, and myself to share notes on
any problems we encounter when we get the buggers.

... Joe

-------------------------------------------------------------------------------
Joe Greco - System Administrator		       jgreco@solaria.mil.wi.us
Solaria Public Access UNIX - Milwaukee, WI			   414/321-9287
Newsgroups: comp.dcom.modems
From: quix@panix.com (George Papadopoulos)
Subject: USR DEAL??? Is this valid???
Organization: PANIX Public Access Unix, NYC
Date: Sun, 10 Jan 1993 23:06:25 GMT

	I found the following text capture on a local bulletin board. Can
anyone tell me if this is valid or not? Can anyone in the Houston area
check up on this company 'USR Digital Marketing'. Selling a $700 modem
for $180 is too good to be true. I guess this note is from some Fidonet 
echo or something. Here's the text....


---------->8    CUT HERE    8<-----------------
[From    ] Philip Gladwin
[To      ] Dirk Ammala
[Date    ] 06 Jan 93  16:44:00
[Subject ] Re: Modems

MA> Does anyone have any information on whats the best high speed modem for
DA> the
MA> Amiga?  I`m think of getting a 14.4 Supra, but the Supra seem to have a
DA> lot
MA> of problems.
DA> The best modem you could buy for your Amiga would be a USR Courier Dual
DA> Standar
DA> Be prepared to pay for it though.
DA> -=Dirk=-.
DA> ___
DA>  * KWQ/2 1.0*2 *
DA> -!- WM v2.06/92-0347
DA>  ! Origin: The Waynesville BBS (314) 774-2736/3122 (1:14/610)

U.S.  ROBOTICS DIGITAL MARKETING CORPORATION ANNOUNCES SALE ON
U.S.  ROBOTICS 14.4K DUAL STANDARD (HST/V.32) WITH V.32 BIS/V.42
BIS AND 14.4K BUILT-IN FAX MACHINE.  THIS MODEM, AS A DUAL
STANDARD, IS BOTH HAYES COMPATIBLE AND AN HST SIMULTANEOUSLY.
THE LOWEST PRICE EVER ON THE NEW MODEM IS $180.00 PLUS $7.00
SHIPPING AND HANDLING FOR EACH MODEM.  ALLOW 3 TO 4 WEEKS FOR
SHIPPING AND HANDLING.  BOTH INTERNAL AND EXTERNAL ARE SAME
PRICE.  PLEASE SEND PREFERABLY CHECK, CASH, OR MONEY ORDER (TOTAL
OF $187.00 PER MODEM) WITH THE FOLLOWING FORM FILLED OUT (PRINT
THIS FORM OUT AND EITHER PRINT NEATLY OR TYPE YOUR INFORMATION
PLEASE):

___ INTERNAL    OR    ___ EXTERNAL

FULL NAME__________________________________________

ADDRESS LINE 1__________________________________________

ADDRESS LINE 2__________________________________________

PHONE # (W/AREA CODE)   ___-___-____

QUANTITY OF MODEMSSHIPPING &
BEING PURCHASED_______ ($180.00 EACH) + HANDLING  ____ ($7 EACH)

GRAND TOTAL    _________ ($187.00 FOR EACH MODEM; PLEASE CALCULATE TOTAL)

FULL 90 DAY MONEY-BACK RISK-FREE GUARANTEE.
MAKE SURE THAT THE PRINTING IS LEGIBLE IF IT IS NOT TYPED.  NOTE:
THIS SALE GUARANTEES MODEM FUNCTION AND WARRANTY FOR 5 YEARS.
THE SALE IS THE LOWEST SINCE THE HISTORY OF THE DUAL STANDARD.
PLEASE SEND THE FORM YOU FILLED OUT WITH THE APPROPRIATE MONEY
AMOUNT TO THE FOLLOWING ADDRESS:

USR DIGITAL MARKETING, INC.
16335 NORTH TRAIL DR.
HOUSTON, TX  77073
P.U.B. BOX 004

 * Q-Blue v0.7 [NR] *
--- GrayQWKMail 2.0
 * Origin: The DogStar BBS Sault Ste. Marie,ON USR/DS/OS2 Node 1 (1:222/10)


--------
From: jmcging@access.digex.com (John McGing)
Newsgroups: comp.dcom.modems
Subject: SupraFaxModem Internal UART?
Date: 9 Jan 93 12:13:10 GMT
Organization: Express Access Online Communications, Greenbelt MD USA
Reply-To: jmcging@access.digex.com
NNTP-Posting-Host: access.digex.com
Summary: What UART does it have?
Keywords: modem,supra,fax,uart

The SupraFaxModem (14400) internal.  Does it have a UART and is it a 
16550AFN?  If not, is it user replacable?  I use OS/2 and need the
16550AFN.

-- 
-----------------------------------------------------------------------
jmcging@oss724.ssa.gov  or jmcging@access.digex.com    
SSA, your FICA tax people    woodb!oss2cc!jmcging@soaf1  
J.MCGING on GEnie  70142,1357 on Compuserve
Newsgroups: comp.dcom.modems
From: rbt@tous.oau.org (Robert B. Tate)
Subject: Re: How does WB handle incoming fax vs. data calls?
Organization: Tate Enterprises
Date: Fri, 8 Jan 1993 02:24:05 GMT

In article <1993Jan6.194044.1088@cmkrnl.com> jeh@cmkrnl.com writes:
>machine. 
>
>I can see it working for FAX if I set up a serial port on my machine as a
>"dedicated FAX data" port, with a FAX receiver process always listening on that
>port... but if the modem is connected to that port, the modem can't be used for
>data calls. 
>
>How does Telebit address this???
>

From the post here, they don't :<. You ether have an incomming FAX line
or you have an incomming modem line. out going can be ether (like you
said). I'm glad I saved my $99.


-- 
 rbt@tous.OAU.ORG  (Robert B. Tate)       | A little knowledge is a dangerous
 {ucf-cs,peora,tarpit}!tous!rbt           | thing. Any less can kill you.
Newsgroups: comp.dcom.modems
From: rodney@tyrell.tynet.sub.org (Rodney Volz)
Subject: Re: ZyXEL voice and flow control
Keywords: ZyXEL voice flow control
Organization: Tyrell, Stuttgart (FRG)
Date: Mon, 04 Jan 1993 23:58:50 GMT

In article <rkimball.725840444@athena> rkimball@athena.qualcomm.com (Robert Kimball) writes:
>I have been playing around with voice mail and my ZyXEL and ran into
>a problem.  It does not appear that flow control works in voice mode.
>I have set the modem to hardware flow control with the at&h3 command
>and get everything set to send voice data to the modem.

ZyXEL modems use XON/XOFF in voice mode. I'd appreciate to
see a new ROM revision supporting

1.) Proper RTS/CTS flowcontrol in voice mode
2.) Reliable DTMF recognition
3.) Reliable at&d3 mode (*really* hangup on DTR->low)
4.) Adjustable volume gain in voice mode

Zyxel rep's; where are you?

Good luck...
-Rodney
-- 
                     Rodney Volz - 7000 Stuttgart 1 - FRG
 ===================> ...uunet!uka!smurf!tyrell!rodney <====================
  Tyrell: +49 711 651429 V32bis Public access - rodney@tyrell.tynet.sub.org
  \_____________ May your children and mine live in peace. _______________/
From: tal@Warren.MENTORG.COM (Tom Limoncelli)
Newsgroups: comp.dcom.modems
Subject: Re: WB Fax Upgrade
Date: 6 Jan 1993 17:19:31 -0500
Organization: Mentor Graphics -- IC Group
NNTP-Posting-Host: milk.warren.mentorg.com

In <1if89sINNgd9@darkstar.UCSC.EDU> daniel@cse.ucsc.edu (Daniel R. Edelson) writes:

>In article <1993Jan6.011755.9953@dms.agames.com> yaturner@dms.agames.com (James M. Turner) writes:
>>For what it's worth GNU has a FAX Modem server and it's FREE as in
>>Free Software Foundation

>Yes, NetFax, but currently it appears to be Sun-specific because 
>it uses rpc. 

...and it has problems with flow-control on most Sun's.

Tom
P.S.  I haven't been able to fix the problem either, so don't write to me :-)

-- 
Tom Limoncelli -- tal@warren.mentorg.com (work) -- tal@plts.uucp (play)

Unix is a trademark of, WHATT????
From: jcburt@gatsibm.larc.nasa.gov ()
Newsgroups: comp.dcom.modems
Subject: Re: Can I upgrade a 16450 uart to a 16550a?
Date: 11 Jan 1993 13:25:55 GMT
Organization: NASA Langley Research Center
NNTP-Posting-Host: gatsibm.larc.nasa.gov

In article <3653@aegis.or.jp> davidg@aegis.or.jp (Dave McLane) writes:
>jim@n5ial.mythical.com (Jim Graham) writes:
>
[...stuff deleted...]
>
>>based on that information (which appears to have been incorrect to begin
>>with), my statements were correct --- it can be directly replaced with a
>>16550.  of course, that assumes that the app-notes and specs from
>>National Semiconductor are correct.  :-)  and it also assumes that I
>>wasn't dreaming when I replaced a few 16450s with 16550s a while back.
>
>Unfortunately you only responded to part of the original post. The
>clue was the part where Dell says it has a VLSI.

Regardless of *what* Dell said, the original poster asked (see subject line)
"Can I Upgrade a 16450 UART to a 16550a", NOT "what kind of UART does
a Dell 325D have..." or "What will it take to put a 16550A UART in a Dell
325D...", Jim answered the original poster's question, not the question the
poster *should* have asked...'nough said...

>
>>btw, just as a bit of nit-picking, replacing one chip with another
>>isn't so much a question of being computer literate as it is a matter
>>of being HARDWARE literate.  just so happens that some of us are both
>>(after all, when designing and/or interfacing with the hardware, it's
>>often hard these days to draw the line between where the hardware stops
>>and the software begins).  but this question (``Is it possible to
>>upgrade the 16450 to a 16550a?'') is purely a hardware question, not
>>a software question.
>
>But we aren't discussing how to replace one chip with another, we're
>talking about what kind of UART the Dell 325D has and this boils
>down to being computer literate ('computer' including both hardware
>and software) enough to know what a "VLSI" is. Or if you don't know,
>finding out.

Ummm...excuse me Dave, but the original question *was* can one chip be
replaced with another...as far as being computer literate, I know many
people who write software for a living, even down to the device driver
level, and many who have andvanced degrees in computer science who have
no idea what kind of UART a Dell 325D has and could really care less...I guess
this makes them COMPUTER ILLITERATE??? And I guess the fact that somebody
tinkers with a PC and runs a few programs makes the computer literate???
give me a break!!


John Burton
jcburt@gatsibm.larc.nasa.gov
From: tnixon@hayes.com
Newsgroups: comp.dcom.modems
Subject: Re: Hayes V.series 9600 Smartmodem. Question
Date: 4 Jan 93 12:05:25 EDT
Organization: Hayes Microcomputer Products, Norcross, GA

In article <C0ArLv.B3p@undergrad.math.waterloo.edu>,
dhuey@cayley.uwaterloo.ca () writes: 

> My friend recently gave me his old Hayes 9600 minus the instruction book.

Manuals for any Hayes product can be purchased for a nominal fee 
through Hayes Customer Service at 404-441-1617.  We also have an 
office in Waterloo (where you appear to be); the number there is
519-746-5000.

> I tried in vain to connect at 9600 with other BBSs that have v32
> and v32.bis modems.  My friend says that this older modem has v32. 

The V-series Smartmodem 9600 uses a modulation scheme that is, in 
some respects (such as the signal encoding), similar to V.32, but it 
is not compatible with CCITT V.32 modems.  The V-series modulation, 
known as Express 96, uses V.32 signalling in a half-duplex, 
fast-turnaround, ping-pong mode, rather than the full-duplex 
modulation with echo cancellation used in V.32-compliant modems.

Some Hayes modems, such as the Ultra 96 and Ultra 144, support both 
standard V.32 and Express 96, but it sounds like you have one of the 
original V-series 9600 modems that supports only Express 96 above 
2400 bit/s.  It will fall back to V.22bis at 2400 bit/s to 
communicate with non-Hayes modems.

-- 
Toby Nixon, Principal Engineer      | Voice   +1-404-840-9200  Telex 401243420
Hayes Microcomputer Products, Inc.  | Fax     +1-404-447-0178  CIS   70271,404
P.O. Box 105203                     | BBS     +1-404-446-6336  AT&T    !tnixon
Atlanta, Georgia  30348             | UUCP uunet!hayes!tnixon  Fido   1:114/15
USA                                 | Internet                tnixon@hayes.com
Newsgroups: comp.dcom.modems
From: jlacour@casbah.acns.nwu.edu (John Lacour)
Subject: Re: USR Deal??
Followup-To: poster
Organization: Northwestern University, Evanston Illinois.
Date: Mon, 11 Jan 1993 23:27:32 GMT


In article <C0o0Bo.D7@world.std.com> rsm@world.std.com (Robert Marlan) writes:
>quix@panix.com (George Papadopoulos) writes:
>
>>	I found the following text capture on a local bulletin board. Can
>>anyone tell me if this is valid or not? Can anyone in the Houston area
>>check up on this company 'USR Digital Marketing'. Selling a $700 modem
>>for $180 is too good to be true. I guess this note is from some Fidonet 
>>echo or something. Here's the text....
>
>>U.S.  ROBOTICS DIGITAL MARKETING CORPORATION ANNOUNCES SALE ON
>>U.S.  ROBOTICS 14.4K DUAL STANDARD (HST/V.32) WITH V.32 BIS/V.42
>>BIS AND 14.4K BUILT-IN FAX MACHINE.  THIS MODEM, AS A DUAL

This 'organization' is not affiliated with USRobotics, Inc. (Skokie, IL).

USR currently has no sales offices outside of Skokie, IL with the exception
of a west coast office in Santa Clara, CA.

If anyone has any other information about this offer, please email, telephone,
or fax.

Regards,
John
--
John A. LaCour III, Technical Support                      +1 708 982 5151
USRobotics, Inc.                                       FAX +1 708 933 5552
8100 N. McCormick Blvd.                           
Skokie, IL  60076                              jlacour@casbah.acns.nwu.edu

USR Email:      jlacour_+a_robopost_+ljohn_lacour+r%usrobotics@mcimail.com
Newsgroups: comp.dcom.modems,biz.comp.telebit
From: johnson@tigger.jvnc.net (Steven L. Johnson)
Subject: Re: A Telebit FAX upgrade FLAME (Was: "Re: WB Fax Upgrade")
Originator: johnson@tigger.jvnc.net
Keywords: Telebit  FAX  documentation
Organization: JvNCnet
Date: Wed, 6 Jan 1993 23:03:38 GMT

larry@news.rn.com (Larry Snyder) writes:

>What is v.25bis -- is this specifically FAX compression?

Not related.  V.25bis is dialing commands in synchronous mode.

-Steve
From: davidg@aegis.or.jp (Dave McLane)
Newsgroups: comp.dcom.modems
Subject: Re: Can I upgrade a 16450 uart to a 16550a?
Date: 9 Jan 93 01:58:11 GMT

lars@spectrum.CMC.COM (Lars Poulsen) writes:

>In article <1993Jan7.152939.28987@wam.umd.edu>
>   joel@wam.umd.edu (Joel M. Hoffman) writes:
>>I just purchased a high speed modem (14.4K from Boca) for my Dell
>>325D.  ... Dell ... uart ... turns out it's a 16450.  ... I'm losing
>>char.s with high-speed transfers, especially with a loaded machine
>>...
>>Is it possible to upgrade the 16450 to a 16550a?  
>>...
>>[I tried asking the representative a Dell, but, when he answer my
>>question of "What kind of uart is in the machine" with "You have a
>>VLSI chip," I gave up.]

>The answer is that you don't have a 16450 UART - you have a simulation
>of one (or two) on a custom-made chip, probably together with a parallel
>port. You are stuck with what you have.

I also have a Dell 325D and was told the chip also does handles the
printer and keyboard. 

>If you are only going to use the modem with the PC, it would have been
>cheaper to disable the serial port that you are now using, and
>installing an internal modem instead. It would have had the buffering
>built in ...

No need to disable the port, if you add an internal modem or an
add-on card the 325D will automatically disable itself (assuming the
BIOS options are default). 

I installed a 2-port card with 2 X 16550AFN chips on it and it works OK.

Dave

--
Dave McLane 
JUNET: davidg@aegis.or.jp (ONLY within Japan: post otherwise)
Nagaokakyoshi, Kyoto Japan Tel: +81-75-951-1168 Fax: +81-75-957-1087