2016-02-08 by midipuppies@...
I agree that there's most likely something like that going on with either serial numbers or EPROM REV#'s that affect the challenge code, but I do remember messing with it when I first came across it years ago, and I'm sure it was generating different codes every time.
Maybe there are a pool of different codes that a machine can generate that will result in the same response code. Who knows.
Since the binary does not work in all machines, I may buy that code from Richard just to see if the hex is different once installed, since it's socketed and all.