HD647180 Ghox/Whoopee bonus round

In an earlier post we looked at processing firmware from HD647180 chips in the original decap lot. However, there are several related MCUs that were not included: Ghox and Whoopee:

Although we aren't generally accepting new chips, these were evaluated on case-by-case basis to be both easy to process and of moderate interest.

Like previous chips, we milled a cavity for acid:

Then decapped and masked them:

Which was followed with soldering to adapter boards and exposing to UV light.

Finally, they were inserted into an EPROM reader and which successfully extracted the data.

Enjoy this post? Please support us on Patreon! Note: with the Indiegogo campaign over we unfortunately don't currently have a way to accept one time donations.