> All ROMs can suffer from the effects of EM ( electro-migration ).
> They can suffer from impurity ions as well. Copper and
> sodium are real bad.
If you wait long enough, sold-state diffusion will get you
anyway. Not a real issue with many old things (say, Trajan's
Column or Cleopatra's needle) but when you are dealing with
fine structures (on the order of micrometres even in the 1970s
I would guess) I would guess a few hundred years is enough
to introduce the occasional error.
Best to back everything up right now (and refresh onto
new media as required) :-)
Antonio
--
---------------
Antonio Carlini arcarlini_at_iee.org
Received on Tue Apr 06 2004 - 14:01:59 BST