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Article #2099

Re: com port disapear!

#2099
From: Gary Tait
Date: Thu, 05 Dec 1996 00:00
33 lines
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On Wed, 4 Dec 1996, Psykosonik wrote:

#You are getting confused over what device manager means by a PORT and 
#what a COM port means. Device manager list only physical PORTS, such as
#9-pin/25-pin serial ports and parallel (LPT1/2) ports that you would 
#physically connect devices such as external modems and printers to the 
#back of your computer.  a COM port is acually an address occupied by the 
#device, such as your USR mode. COM3 means that your USR modem uses the 
#next available memory address 03E8h known as COM3 in more simpler terms.
#
#So YOU SHOULD NOT have a COM3 under ports in device manager, since your
#USR Modem is using it and NOT a physical port as describe above.
#
#Psykosonik
#
Not so, MSD shows my modem (a GVC 14.4 on com1) as a 16550 uart ,and my
com2 as what it is (an 8250),and doesn't recognize com3 (although my
software that uses it, recognizes it.)

MSD will recognize com3 if I run a program like ADDPORT.

Your internal modem ,although it most likely doesn't have a physical 
UART on it, the BIOS, and software see it as a serial port.(You don't
set up your comms software up any differently for an internal than an
external, do you? ) 
I have actually seen an internal modem that had an actual 8250 UART
on it (it was a 1200 Baud).

Gary Tait , VE3VBF
- Please quote prices in $CDN, as $US prices are no good to me ,here in   -
- Canada. If you must quote prices, please quote prices from dealers in   -
- the Toronto, Ontario area,and westward.(my location is near Kincardine)
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From: Gary Tait <tait@primeline.net>
Subject: Re: com port disapear!
Date: 1996/12/05
Message-ID: <Pine.LNX.3.95.961205132021.19145C-100000@primeline.net>
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references: <57kprs$5i8@news.NetVision.net.il> <32A664B1.5FD4@megahertz.njit.edu>
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