How to install virtual TI-85

You can use Tilem - TI Linux Emulator.

TilEm2 is a TI calculator emulator. It emulates all the Z80 calculators (73, 76.fr, 81, 82, 82stats, 82stats.fr, 83, 83+, 83+ SE, 84+, 84+ SE, 85, and 86) and all known ROM/OS versions. TilEm2 is completely free, and designed for Linux (but available for Windows).^TilEm

To download click Here.

For help installing see How do I install a .tar.gz (or .tar.bz2) file

to get TI 86 on ubuntu first download tilem 2.0-2 (amd64 binary) from here

Then you will need rom for TI 86 which you can get from here. Read the line " You only have to download this rom image" carefully, 'this' will take you to download rom...

Thanks to 'Jeroen Doggen'....