testing z80s....
?
Unplug the built in one and plug in the one in question
if it boots and does all the usual stuff its a good Z80.
?
Over the years the only Z80s I've seen that were bad
were either missing pins (obvious), or subjected to
significant over voltage.? In general it takes a lot
of mistreatment to kill one.? However people do
manage to do that.? Enough ESD and you can
blow up a pin, its input or output circuit on the die.
?
More common this day and age is fake/fraud
marked parts that are not even z80.
?
?
Allison
