3 ms·
Is it possible to read out the mask ROM on this chip without physically decapping it?
by mmastrac 4y ago
Is it possible to read out the mask ROM on this chip without physically decapping it?
- classichasclass 4y ago(author) Unlikely, because the ROM contents are never emitted on any of the chip's lines. Perhaps in the future we can image chips without having to wreck them.
- djmips 4y agoMade difficult with the Harvard architecture.
- userbinator 4y agoIf it's metal mask, it might be possible with sufficiently high-resolution x-ray imaging.
- userbinator 4y agoLook at mask ROM design if you don't believe me. Metal shows up very contrastingly in x-ray images.
- mmastrac 4y agoI'd love to figure out a shop that can do something like this for another chip I was hoping to read-out - one of the ones used for the old 1980's Casio keyboards.