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Date:      Wed, 01 Oct 1997 09:41:13 +0930
From:      Mike Smith <mike@smith.net.au>
To:        William Bulley <web@merit.edu>
Cc:        freebsd-hardware@FreeBSD.ORG
Subject:   Re: old versus new IBM PC keyboards 
Message-ID:  <199710010011.JAA02478@word.smith.net.au>
In-Reply-To: Your message of "Tue, 30 Sep 1997 16:58:50 -0400." <199709302058.QAA15156@ohm.merit.edu> 

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> I have several perfectly functional original IBM PC keyboards
> which are pre-AT (even pre-XT for that matter) which I would
> dearly like to use with some modern PC clone motherboards.

Oh dear.

> I have had people tell me to buy a new keyboard.  I have read
> in the various PC hardware FAQs that the interface is different.
> I really hate to buy new (el cheapo) keyboards when I know these
> older stalwarts work just fine (with their older style computers).

That's where they should be used.

> Does any BIOS vendor support this old style keyboard or is it baked
> into firmware (or gate array logic) on the various support chip sets?

The communications protocol used by original PC keyboard is 
sufficiently incompatible with that used by the PC/AT keyboard that you 
have no significant hope of using the former with a modern system.

> Any ideas at all, besides: 1) toss the keyboard, 2) write your own
> BIOS keyboard support?  Thanks.

Go looking for any of the AT-compatible clones built using the same 
mechanism.  You should also investigate a secondhand PC/AT keyboard, or 
a genuine PS/2 keyboard, both of which are similiarly constructed and 
compatible with modern hardware.

mike





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