On Wednesday 28 September 2005 07:23 am, Gerhard Fiedler scribbled:
> > I often triplicate critical data, but I like to separate it into
> > different pages, and avoid certain locations.

BTW, avoid which locations?  And why?


> I guess that's what I would do. Maybe even make sure you use different
> offsets (by setting the start addresses of the data arrays appropriately),
> but not sure this makes for much of a difference.

Currently, I have it setup as group 1 goes from 0 to n-1, group 2 from n to 
2n-1, and group 3 from 2n to 3n-1.  Each group is then divided into sets of 4 
bytes for each value.


> Rather than checking integrity on read you could have a regular integrity
> checking routine that runs in the background when nothing else is going on.
> This way you don't burden the process with that (if read time is a
> concern).

Actually, I have lots of processing cycles on readback, which occurs only on 
power-up, to locate the latest valid data and continue from there.  Reducing 
cycles during write is key here.

Cheers,
-Neil.



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