Ethan Dicks wrote:
Mostly, PROMs are sturdy, though every once in a while
(under 5%),
they do turn up bad.
Depends on the technology used. Most of the early ones used NiCr fuses,
which commonly have a problem with regrowth.
Because of that, other technologies were introduced, which were less
prone to that problem. One fairly common replacement was TiW.