Monday, August 21, 2017

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.

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