@MateoConLechuga and @jacobly have just released a portable and open-source TI-84 Plus CE and TI-83 Premium CE emulator.
It is currently still in the early stages but is coming along rather swiftly. It can boot Ti-OS and has an interactive debugger available
More info is available in the thread. Huge shoutout to the team that made this!
Download : Soon ! There is no binaries to download yet, you'll have to be a little more patient
Source code on GitHub : https://github.com/MateoConLechuga/CEmu
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