Quote Originally Posted by Westcb View Post
In my own experience it's not that easy to erase EPROMs. I have had to bake them in direct UV light for as long as 30 mins to completely erase a chip, MVS carts have small vent windows and I doubt there is much sunlight in your MVS cab :-) not much concern for a bootlegger to worry about wasting stickers in an environment that's not that unstable.
I assume in your example, 30 minutes is the total time to erase every bit of the EPROM, where as a shorter bake time will only erase some parts of the memory? I guess it's kind of a gray area, and not binary (All or nothing) in terms of erasing?