While inversion is common in flash interfaces, you have also seen large blocks of 0xFF, so I doubt that is going on, unless some pages are inverted and others not. My guess would be that the drive writes all bits clear before erasing as part of wear-leveling for some reason?

In reply to Re^8: Adding cols to 3d arrays - syntax by jcb
in thread Adding cols to 3d arrays - syntax by peterrowse

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