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Programming > Assembly x86 > Re: Accessing t...
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Re: Accessing the Speaker of an IBM Model M keyboard

by polemon <spamtrap@[EMAIL PROTECTED] > Mar 11, 2008 at 07:17 PM

On Tue, 11 Mar 2008 12:39:44 +0100, Wolfgang Kern <spamtrap@[EMAIL PROTECTED]
>
wrote:
> IIRC there were an unused pin (one of five) on old keyboards.
> Are you sure for this speaker is wired to the connector at all ?
> (if, then you may need a solder iron to rewire the speaker-output
> in your PC. Can't remember which pin  ... one of the two grounded)
> Or is it just in there for producing the 'legendary click' sound ?

The Speaker is not wired to the connector.
It's wired to the controler in the keyboard.

>From what I've learned by browsing through webpages is, that there is a
special
command that needs to be sent to the keyboard, in order to activate the
speaker.

The 'legendary click' is being made by the keyboard mechanism itself,
the buckling spring mechanism.

The Speaker is for producing another 'click' for every keystroke. I've
never heard
this clicking sound, all I know it's there to make one.

I'm still searching for the command code that needs to be send to the
keyboard,
in order to activate this clicking.
I've send mails to museums, asking if they have personel, that knows how
to enable
this feature (sometimes retirees that are familiar with old computers work
for 
computer museums), maybe they know what to do.  

-- 
-EOF-
 




 8 Posts in Topic:
Accessing the Speaker of an IBM Model M keyboard
polemon <spamtrap@[EM  2008-03-10 03:16:43 
Re: Accessing the Speaker of an IBM Model M keyboard
Dirk Wolfgang Glomp <  2008-03-10 11:33:41 
Re: Accessing the Speaker of an IBM Model M keyboard
Jim Leonard <spamtrap  2008-03-10 06:50:25 
Re: Accessing the Speaker of an IBM Model M keyboard
polemon <spamtrap@[EM  2008-03-18 03:01:44 
Re: Accessing the Speaker of an IBM Model M keyboard
"Wolfgang Kern"  2008-03-11 12:39:44 
Re: Accessing the Speaker of an IBM Model M keyboard
polemon <spamtrap@[EM  2008-03-11 19:17:07 
Re: Accessing the Speaker of an IBM Model M keyboard
Frank Kotler <spamtra  2008-03-11 20:06:32 
Re: Accessing the Speaker of an IBM Model M keyboard
"Wolfgang Kern"  2008-03-12 13:03:32 

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tan12V112 Sat Jul 26 2:06:07 CDT 2008.