BTW since it hasn't been mentioned here yet, Kevtris is on a roll. He figured out how to dump NEC ucom-4 42-pin devices (upd55x PMOS and upd65x CMOS, used in many VFD games from 1979-1984), and figured out (with Sarayan's help both of them figuring out most of the opcodes since these were not documented anywhere) how to dump Hitachi hd3880x 4-bit mcus, also used in VFD (and maybe LED?) games. Both of these types can now be dumped without decapping using the test modes and/or test code built into the chip.
"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"