Martin McCormick writes:

>         Is there any way to tell when a 16C84 is getting close to the end of
> its reprogrammability so that one can put some stable code in it and
> permanently use it for something that isn't likely to change?

What you could do is sacrifice a location (in fact I think the 16C84
has some test memory at logical addresses 0x2008-0x200F but I don't
know whether it uses exactly the same technology as the program
memory).  The idea is to repeatedly bash that one location to assess
endurance before you start using the chip normally.

David
--
http://www.man.ac.uk/~mbhstdj