19 Nov
2018
19 Nov
'18
8:34 a.m.
I have a question. I use the USB port for serial. In my program, I use a fixed com port.
When going to the control panel, I find that I see (in use) tags on some of the com ports.
I'm the only one currently using the com ports but recently another (in use) showed
up, requiring me to modify my program to use another com port. How does one unuse a com
port? how do I find out what is using it so I can stop it? I'm using windows 7
professional. Has anyone else had this problem?
Dwight
19 Nov
19 Nov
8:41 a.m.
I have a question. I use the USB port for serial. In
my program, I use a
fixed com port. When going to the control panel, I find that I see (in
use) tags on some of the com ports. I'm the only one currently using the
com ports but recently another (in use) showed up, requiring me to
modify my program to use another com port. How does one unuse a com
port? how do I find out what is using it so I can stop it? I'm using
windows 7 professional. Has anyone else had this problem? Dwight
Do you unplug the USB to Serial dongle with a terminal program open?
- Ethan
9:13 a.m.
On Mon, 19 Nov 2018, Ethan via cctalk wrote:
FYI, "In Use" doesn't mean the port is actively used by another
process,
it means that the /name/ has been assigned and isn't available to assign
to a new COM device.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
I have a
question. I use the USB port for serial. In my program, I use a
fixed com port. When going to the control panel, I find that I see (in use)
tags on some of the com ports. I'm the only one currently using the com
ports but recently another (in use) showed up, requiring me to modify my
program to use another com port. How does one unuse a com port? how do I
find out what is using it so I can stop it? I'm using windows 7
professional. Has anyone else had this problem? Dwight
Do you unplug the USB to Serial dongle with a terminal program open?
10:12 a.m.
Every time you unplug and re-plug a USB serial cable you cause the system
to create a new IRQ address for it, called COM5, 6,7,8,9 etc. If you do
the thing where you "remove usb devices safely" routine you can avoid this.
b
On Mon, Nov 19, 2018 at 12:13 PM geneb via cctalk <cctalk at classiccmp.org>
wrote:
On Mon, 19 Nov 2018, Ethan via cctalk wrote:
FYI, "In Use" doesn't mean the port is actively used by another
process,
it means that the /name/ has been assigned and isn't available to assign
to a new COM device.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
> I have a question. I use the USB port for
serial. In my program, I use
a
> fixed com port. When going to the control
panel, I find that I see (in
use)
> tags on some of the com ports. I'm the
only one currently using the com
> ports but recently another (in use) showed up, requiring me to modify
my
> program to use another com port. How does one
unuse a com port? how do
I
find out
what is using it so I can stop it? I'm using windows 7
professional. Has anyone else had this problem? Dwight
Do you unplug the USB to Serial dongle with a terminal program open?
2:15 p.m.
Hi Ethan
That is entirely possible. I do think about it when I plug and unplug the USB floppy
drive but not usually for the serial.
Is there a way to finish them or maybe stick things in so that I can "safely
remove" things? Most of the time for serial, I use a FTDI but I do have some older
USB to RS232 voltage converters as well.
Dwight
________________________________
From: ethan at 757.org <ethan at 757.org>
Sent: Monday, November 19, 2018 8:41 AM
To: dwight; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: What is windoes doing?
I have a question. I use the USB port for serial. In
my program, I use a
fixed com port. When going to the control panel, I find that I see (in
use) tags on some of the com ports. I'm the only one currently using the
com ports but recently another (in use) showed up, requiring me to
modify my program to use another com port. How does one unuse a com
port? how do I find out what is using it so I can stop it? I'm using
windows 7 professional. Has anyone else had this problem? Dwight
Do you unplug the USB to Serial dongle with a terminal program open?
- Ethan
10:35 a.m.
I have a question. I use the USB port for serial. In my program, I use a
fixed com port. When going to the control panel, I find that I see (in use)
tags on some of the com ports. I'm the only one currently using the com
ports but recently another (in use) showed up, requiring me to modify my
program to use another com port. How does one unuse a com port? how do I
find out what is using it so I can stop it? I'm using windows 7
professional. Has anyone else had this problem?
Dwight
This list is my refuge from "windoes" and USB. Can we please not do this here?
If the query related to writing an emulator for a classic system on Windows
with USB device attachment, I think I could cope but this needs to be stated.
Regards,
Peter Coghlan.
2:39 p.m.
Actually, I do use it almost exclusively with classic machines. I use the RS232 to load
and talk to my Nicolet 1080 ( a late 1960s to early 1970 ) machine. I just got done using
it to repair a North * Horizon. If I'm leaving trails behind me that I can't get
rid of, each time I use it as a terminal, I'll be limited on what repairs I can do.
The FTDI was just recently used to write and debug code on a small controller board to
convert a ps/2 keyboard to parallel for my Poly88.
Windows is not the end use. I don't even put it directly on the web. It is primarily
used a data transfer, some editing and terminal for classic machines. Its functioning is
important for maintaining and restoring classic machines.
This was not a typical " please help me fix my PC " post. I don't email, web
search or anything else with this machine. Its one purpose is related to restoring and
maintaining classic machines. It is no more off topic than a new temperature controlled
soldering iron is. What would I use serial and RS232 for?
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Peter Coghlan via
cctalk <cctalk at classiccmp.org>
Sent: Monday, November 19, 2018 10:35 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: What is windoes doing?
I have a question. I use the USB port for serial. In my program, I use a
fixed com port. When going to the control panel, I find that I see (in use)
tags on some of the com ports. I'm the only one currently using the com
ports but recently another (in use) showed up, requiring me to modify my
program to use another com port. How does one unuse a com port? how do I
find out what is using it so I can stop it? I'm using windows 7
professional. Has anyone else had this problem?
Dwight
This list is my refuge from "windoes" and USB. Can we please not do this here?
If the query related to writing an emulator for a classic system on Windows
with USB device attachment, I think I could cope but this needs to be stated.
Regards,
Peter Coghlan.
20 Nov
20 Nov
5:43 a.m.
On 11/19/2018 11:34 AM, dwight via cctalk wrote:
I have a question. I use the USB port for serial. In
my program, I use a fixed com port. When going to the control panel, I find that I see (in
use) tags on some of the com ports. I'm the only one currently using the com ports but
recently another (in use) showed up, requiring me to modify my program to use another com
port. How does one unuse a com port? how do I find out what is using it so I can stop it?
I'm using windows 7 professional. Has anyone else had this problem?
Dwight
Windows "remembers" com ports of USB devices based on the VID/PID of the
USB device.
This allows the same device (USB com port) to get the same COM
assignment but means you end up with a ton of useless COM port
reservations when you're using a large number of different USB COM devices.
Something like
https://superuser.com/questions/408976/how-do-i-clean-up-com-ports-in-use
has instructions for removing them in Windows 7.
I could have sworn I just uninstalled them from Device Manager but I
forget now as it was a while ago.
Todd
3:21 p.m.
Great Todd. That is just what I'm looking for. It makes sense that it would keep
track. I have two different ftdi chips that I'm using so I can see how it got messed
up.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Todd Goodman via cctalk
<cctalk at classiccmp.org>
Sent: Tuesday, November 20, 2018 5:43 AM
To: cctalk at classiccmp.org
Subject: Re: What is windoes doing?
On 11/19/2018 11:34 AM, dwight via cctalk wrote:
I have a question. I use the USB port for serial. In
my program, I use a fixed com port. When going to the control panel, I find that I see (in
use) tags on some of the com ports. I'm the only one currently using the com ports but
recently another (in use) showed up, requiring me to modify my program to use another com
port. How does one unuse a com port? how do I find out what is using it so I can stop it?
I'm using windows 7 professional. Has anyone else had this problem?
Dwight
Windows "remembers" com ports of USB devices based on the VID/PID of the
USB device.
This allows the same device (USB com port) to get the same COM
assignment but means you end up with a ton of useless COM port
reservations when you're using a large number of different USB COM devices.
Something like
https://superuser.com/questions/408976/how-do-i-clean-up-com-ports-in-use
has instructions for removing them in Windows 7.
I could have sworn I just uninstalled them from Device Manager but I
forget now as it was a while ago.
Todd
2007
days inactive
2008
days old
8 comments
6 participants
participants (6)
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billdegnan＠gmail.com -
cctalk＠beyondthepale.ie -
dkelvey＠hotmail.com -
ethan＠757.org -
geneb＠deltasoft.com -
tsg＠bonedaddy.net