That's a great idea, David! I could put a switch in my Keyboard too, so
it'd work accellerated and non-accellerated! Though I still haven't cracked
it open yet, been too busy on other projects. And work...gotta pay for the
hobbies somehow.
-Stephanie
http://www.maksystems.com/newton/
> A standard Newton keyboard won't work but...
>
> ...if a different resonator is fitted in the keyboard that is the same
> ratio shift as the new/old crystal frequencies, then it will.
>
> i.e. old crystal = 3.6864MHz, new crystal = 4.9152MHz
>
> ratio = 4.9152/3.6864 = 1.333...
>
> Keyboard resonator = 4MHz
>
> New value = 4 * 1.333 = 5.333MHz
>
> Replace resonator and the keyboard will work when the newt is accelerated.
>
> The ratio is slightly different for a 5MHz crystal (1.3563368)
>
> You would then need a 5.4253472MHz resonator.
>
> The odd value resonators are not available off the shelf but can be made.
>
> I had some 5.33MHz ones made and they work as advertised.
>
> PCBman
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