21 Sep
2015
21 Sep
'15
6:37 p.m.
Of course, that's not the hardest way. You could also do this:
http://www.pmonta.com/calculators/hp-35/
I have a few chips that I'll need to do that to, where the ROM is
embedded and can't be read out electrically. Unfortunately the chips
are in a much finer geometry than the HP-35 chips, so it's much more
difficult.