EPROM id

[Paul Tholey]

I was wondering if there was a way to id some EPROMs I got.  I actually had
a problem finding a replacement chip for the GM 747 ecm.  I broke the
original EPROM when I was pulling it out of the black holder.  I got a bunch
of other ones from the yard.  Unfortunately they were not out of 747's.  So
is there a way I can tell if they are suitable replacement for the one I
broke?  Maybe some numbers on the bottom, or the top of the chip?

Thanks,

Paul Tholey