To Andy..
yes, Andy, that would work, if there were no register blocks in between!

An example:
RAM Startadress:0x20 then 96 bytes of free memory, then follows a
register block from 0x80 to 0x9F with processor registers, after that
another chunk of free mem until 0xEF ..etc.
So the memory is interrupted by these processor-own register blocks...
I guess that is the problem! Or am I wrong?
Alf

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