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Old keyboard over USB: Problems

 
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Jens_Müller

External


Since: Feb 02, 2004
Posts: 6



(Msg. 1) Posted: Mon Feb 02, 2004 9:02 pm
Post subject: Old keyboard over USB: Problems
Archived from groups: alt>comp>periphs>keyboard (more info?)

Hello,

I habe an old Keyboard with the old 5 pin jack and I conect this
through a PS/2 adapter and again through an (active) USB adapter. If I
start the PC windows does not react to keyboard input.
Now the strange thing:
If I connect a normal PS/2 keyboard it works and then I switsch the two
keyboards fastly and the old one works again!
Somehow Windows (or the Bios) does just not "know" that there is one
keyboard attached but once there is one the old one works again.

How can I let the old one work immediately?
Is there perhaps an electronic cirquit that I can add to activate the
keyboard or can the problem be solved on software side? (I suppose not
because in Dos it does not work either.)

Thank you,

Jens

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Ben Pope

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Since: Mar 29, 2004
Posts: 731



(Msg. 2) Posted: Mon Feb 02, 2004 9:49 pm
Post subject: Re: Old keyboard over USB: Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Jens Müller wrote:
 > Hello,
 >
 > I habe an old Keyboard with the old 5 pin jack and I conect this
 > through a PS/2 adapter and again through an (active) USB adapter. If I
 > start the PC windows does not react to keyboard input.

I take it by "active" you mean that it will accept PS/2 keyboards and allow
them to talk to USB by emulating a USB keyboard, rather than the adaptor you
get in the box with some keyboards (which are designed specifically to work
with USB)?

 > Now the strange thing:
 > If I connect a normal PS/2 keyboard it works and then I switsch the two
 > keyboards fastly and the old one works again!
 > Somehow Windows (or the Bios) does just not "know" that there is one
 > keyboard attached but once there is one the old one works again.
 >
 > How can I let the old one work immediately?
 > Is there perhaps an electronic cirquit that I can add to activate the
 > keyboard or can the problem be solved on software side? (I suppose not
 > because in Dos it does not work either.)

DOS has no idea about USB, and therefore cannot talk to USB keyboards. USB
legacy support in the BIOS makes a pretty good attempt at solving this
problem.

 > Thank you,

Personally I'd buy a newer keyboard. For ~£25 you can have a lovely
Logitech Internet Navigator. For about a tenner you can have a cheap
logitech keyboard that's still pretty good.

Ben
--
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Questions by email will likely be ignored, please use the newsgroups.
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Jens_Müller

External


Since: Feb 02, 2004
Posts: 6



(Msg. 3) Posted: Tue Feb 03, 2004 5:41 pm
Post subject: Re: Old keyboard over USB: Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Hello,
  > > I habe an old Keyboard with the old 5 pin jack and I conect this
  > > through a PS/2 adapter and again through an (active) USB adapter.
If I
  > > start the PC windows does not react to keyboard input.
 >
 > I take it by "active" you mean that it will accept PS/2 keyboards and
allow
 > them to talk to USB by emulating a USB keyboard, rather than the
adaptor you
 > get in the box with some keyboards (which are designed specifically
to work
 > with USB)?

Exactly.

  > > Now the strange thing:
  > > If I connect a normal PS/2 keyboard it works and then I switsch the
two
  > > keyboards fastly and the old one works again!
  > > Somehow Windows (or the Bios) does just not "know" that there is
one
  > > keyboard attached but once there is one the old one works again.
  > >
  > > How can I let the old one work immediately?
  > > Is there perhaps an electronic cirquit that I can add to activate
the
  > > keyboard or can the problem be solved on software side? (I suppose
not
  > > because in Dos it does not work either.)
 >
 > DOS has no idea about USB, and therefore cannot talk to USB
keyboards.

But normal PS/2 keyboards do work. It will be the bios, because on
other pcs taht keyboard does also work at a PS/2 connector. But not at
that notebook over USB.

 > Personally I'd buy a newer keyboard. For ~£25 you can have a lovely
 > Logitech Internet Navigator. For about a tenner you can have a cheap
 > logitech keyboard that's still pretty good.

Well it's just because Ilike that old keyboard (From the 1980s), it has
an integrated calculator and keys who click so nice Wink

Jens<!-- ~MESSAGE_AFTER~ -->
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Jens_Müller

External


Since: Feb 02, 2004
Posts: 6



(Msg. 4) Posted: Tue Feb 03, 2004 7:40 pm
Post subject: Re: Old keyboard over USB: Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Tried also another thing:
USB Legacy Support in Bio was activated. Deactivating did not help..

Jens
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