> Does anyone know where I would be able to find 68HC11 datasheets for
> specific parts?
>
> I'm working on a project with a bunch of other car enthusiasts in the
> reverse engineering of the GM PROMs to get easily assembleable source
> code.  Mostly from 85-93 GM cars.  High performance ones like Grand
> Nationals, Camaros/Firebirds, Syclone/Typhoons.

FWIW:  My understanding (based on decades old recollections of what I was
told at a seminar when the 68HC11 was introduced) was that the GM cpu was
custom built for them and that the 68HC11 was a slightly less capable design
spin off. If so it's unikely that the information is officially available.

I think some of the difefrenc erelated to the capture/compare function with 
the GM part being more capable. Understandable as timing is at the heart of 
the processes involved.


        RM

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