This is my first post.
Anyways, I found a Gameboy emulator for the TI-84 Plus CE graphing calculator. It features save states, turbo mode, pretty much all the emulator essentials.

Emulator Page: https://calc84maniac.github.io/tiboyce/
Emulator Releases: https://calc84maniac.github.io/tiboyce/category/releases.html
ROM Converter: https://calc84maniac.github.io/tiboyce/converter/
Save Converter: https://calc84maniac.github.io/tiboyce/saveconverter/

Hopefully you find it useful!