Wow, great timing! I recently got a TDS684A and also made the same discovery, and wrote half a blog post about it which remains unfinished/unpublished. I don't

Wow, great timing! I recently got a TDS684A and also made the same discovery, and wrote half a blog post about it which remains unfinished/unpublished. I don't have much of an EE background (at least, not on this level) so my article was certainly worse. It's also my only decent scope, so I don't have a good way to take measurements of the scope itself. Relatedly, I dumped the firmware of mine (referencing Tom's notes on a similar model) and started writing an emulator for it: https://github.com/DavidBuchanan314/TDS684A https://github.com/DavidBuchanan314/TDS684A It boots as far as the vxworks system prompt, and can start booting the Smalltalk "userspace" but crashes at some point during hardware initialization (since my emulation is very incomplete!) - some screenshots/logs: https://bsky.app/profile/retr0.id/post/3ljzzkwiy622d https://bsky.app/profile/retr0.id/post/3ljzzkwiy622d Edit: heh, I just realised I'm cited in the article, regarding the ADG286D