Re: Mouse interface stuff - K.O.?...

From: Martijn van Buul (
Date: 2000-09-20 15:48:22

Richard Atkinson wrote:
> On Tue, 19 Sep 2000, Martijn van Buul wrote:
> > A "true" AT keyboard can be configured to be slave (as in: the *computer*
> > is generating the clock). How about mice?
> But that is only when the _host_ is sending the keyboard data, namely the
> state of the num/caps/shift lock lights. 

Nope. The AT keyboard can be configured in 3 distinct modes. In one of them
(mode 2 ?), the *host* is generating the clock. I'm quite positively sure
on this one - There's a philips 8051 application note about how to interface
a AT-style keyboard to I2C. They used this mode. 

I wouldn't be surprised if it isn't available on all models, though.

    Martijn van Buul - -
	 Geek code: G--  - Visit OuterSpace: 3333
   Kees J. Bot: The sum of CPU power and user brain power is a constant.
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