Originally Posted by kbp
...but 'ffffffff' is equivalent to '-1'
In one encoding system ffffffff would be the representation for the number more commonly known as -1, however I can't see how that could be relevant here.
When a flash cell is erased, the value is 1. If you have a byte worth of those, that would be 'f' in hex, two bytes 'ff' <German> ...und so weiter, und so forth... </German>*
*Not quite clear why German sounded like the right language to this in, but, roughly 'etc, etc' and it allowed me to get 'Forth' into an unrelated question.