Missing teeth

[Walter Kaufmann]

>What I want to know is how exactly do thay know when they are at that datum
>mark? For instance, when first starting the engine do they compare the time
>between pulses and when they get a much larger time compared to previous
>ones they think oh I'm at the datum! I just can't quite get my head around
>it at the moment.
>
>It's probably quite staight forward and logical but I can't see it.
>
>Thanks in advance,
>
>Dave Johnson
>
>email:- dajohnson at dek.com

I think, you are right.

But for more details read the "TPU" manual for the Motorola 68332. There is an
example for 'missing teeth' and for 'additional teeth'.

Walter

TPU: Time Processor Unit