Hi. So my Ti84 wasn't functioning properly so i bought a Nspire CX. I was originally getting the very first Nspire model which you could exchange the keyboard for 84 compatibility but apparently it was discontinuated.
The thing is that i have a lot of stuff (PRGMs, APPS, Pics..) that I really need to use, so I was wandering if annyone knows a working Ti84 emulator (or other program for the calculator) for CX.

I would appreciate a quick answer or solution 'cuz I have until tomorrow to return the calculator to the store.

There is a really great emulator on this site by KermM, jstified! Another emulator for the computer but is not online is wabbitemu. Just be aware for both that you need to produce your own ROM image, which comes from an existing ti-84.
As for an emulator that is actually on the nspire, I think there is one in the process of being made. But other than that your best bet is using an emulator on the PC.

Calcemu is available on Ndlessed CXes. But as zeldaking said, you still need a ROM image to use it.