(Msg. 1) Posted: Mon Feb 18, 2008 6:25 pm
Post subject: USB Legacy in BIOS Archived from groups: microsoft>public>windowsxp>general (more info?)
I'm having some problems with my PC. I went into BIOS and one of the options
is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
what will the result be if I leave it disabled?
Any help would be greatly appreciated!
Thanks, attilathehun1
--
attilathehun1
(Msg. 2) Posted: Mon Feb 18, 2008 7:40 pm
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
Google on "usb legacy" and you will find a lot of info.
"attilathehun1" wrote in message
> I'm having some problems with my PC. I went into BIOS and one of the
> options
> is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
> what will the result be if I leave it disabled?
> Any help would be greatly appreciated!
> Thanks, attilathehun1
> --
> attilathehun1
(Msg. 3) Posted: Mon Feb 18, 2008 8:50 pm
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
Attila the Hun 1,
For XP computers, disable USB legacy support in your bios.
What is legacy support?
In USB terms, this is USB device support built into, or specific to, a
particular computer system. Legacy mode support is inherent to a system and
is typically provided by legacy hardware interface emulation.
Legacy mode support allows devices to function in an operating environment
that is not USB-aware. For example, legacy mode support for a USB keyboard
and mouse resides in the system BIOS and presents the keyboard and mouse
data via the port 60h/64h/IRQ1/IRQ12 interface.
Source: USB PC Legacy Compatibility Specification
The preceeding was copied from the Platform Compatibility for USB Boot
Devices site listed below:
> I'm having some problems with my PC. I went into BIOS and one of the
> options
> is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
> what will the result be if I leave it disabled?
> Any help would be greatly appreciated!
> Thanks, attilathehun1
> --
> attilathehun1
(Msg. 4) Posted: Tue Feb 19, 2008 3:56 am
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
"attilathehun1" wrote
> I'm having some problems with my PC. I went into BIOS and one of the
> options
> is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
> what will the result be if I leave it disabled?
> Any help would be greatly appreciated!
If your (only) keyboard and mouse are attached to your PC by a USB
connection (as mine are) and USB legacy is disabled, then when you start up
your computer you won't have a keyboard or a mouse.
(Msg. 5) Posted: Tue Feb 19, 2008 6:52 am
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
In a nutshell, legacy is a reroute of USB keyboard and/or mouse to allow an
OS to use same. XP does not need legacy support of a USB keyboard or mouse.
An example of where legacy support is required of a USB keyboard is real
mode msdos. And, a USB mouse would be addressed as a standard PS/2 mouse in
msdos using its mouse driver with legacy support enabled.
--
Dave
"attilathehun1" wrote in message
> I'm having some problems with my PC. I went into BIOS and one of the
> options
> is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
> what will the result be if I leave it disabled?
> Any help would be greatly appreciated!
> Thanks, attilathehun1
> --
> attilathehun1
(Msg. 6) Posted: Tue Feb 19, 2008 2:58 pm
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
So it would be best to leave that option on, in case you ever wanted it, for
such cases? Is there any drawback to leaving that legacy enabled?
Lil' Dave wrote:
> In a nutshell, legacy is a reroute of USB keyboard and/or mouse to allow
> an
> OS to use same. XP does not need legacy support of a USB keyboard or
> mouse.
>
> An example of where legacy support is required of a USB keyboard is real
> mode msdos. And, a USB mouse would be addressed as a standard PS/2 mouse
> in msdos using its mouse driver with legacy support enabled.
>
> --
> Dave
> "attilathehun1" wrote in message
> >> I'm having some problems with my PC. I went into BIOS and one of the
>> options
>> is to enable, disable USB Legacy. What is the purpose of USB Legacy? Also
>> what will the result be if I leave it disabled?
>> Any help would be greatly appreciated!
>> Thanks, attilathehun1
>> --
>> attilathehun1
(Msg. 7) Posted: Tue Feb 19, 2008 5:35 pm
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
"Lil' Dave" wrote
> In a nutshell, legacy is a reroute of USB keyboard and/or mouse to allow
> an OS to use same. XP does not need legacy support of a USB keyboard or
> mouse.
(Msg. 8) Posted: Wed Feb 20, 2008 7:48 am
Post subject: Re: USB Legacy in BIOS [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
Sometimes the legacy thing is a problem for the keyboard on some older
motherboards. I leave the bios set to stop on any fault (default). These
motherboards I'm talking about can't find a USB keyboard with legacy
disabled. And, you can't get to the bios to change it as the bios can't
find a keyboard. All the ones I've found like this also had a PS/2 port for
a keyboard. So, in this case, you might as well stick with a PS/2 keyboard.
XP seems to know what to do with legacy and USB, and uses the USB
communication version hardware. Motherboard mounted that is.
--
Dave
"Bill in Co." wrote in message
> So it would be best to leave that option on, in case you ever wanted it,
> for such cases? Is there any drawback to leaving that legacy enabled?
>
> Lil' Dave wrote:
>> In a nutshell, legacy is a reroute of USB keyboard and/or mouse to allow
>> an
>> OS to use same. XP does not need legacy support of a USB keyboard or
>> mouse.
>>
>> An example of where legacy support is required of a USB keyboard is real
>> mode msdos. And, a USB mouse would be addressed as a standard PS/2 mouse
>> in msdos using its mouse driver with legacy support enabled.
>>
>> --
>> Dave
>> "attilathehun1" wrote in
>> message
>> >>> I'm having some problems with my PC. I went into BIOS and one of the
>>> options
>>> is to enable, disable USB Legacy. What is the purpose of USB Legacy?
>>> Also
>>> what will the result be if I leave it disabled?
>>> Any help would be greatly appreciated!
>>> Thanks, attilathehun1
>>> --
>>> attilathehun1
>
>
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