If you own a TI-84 calculator, what you can do is use an emulator (I highly recommend Wabbitemu), extract the rom from the calculator, and then give that to the Wabbitemu software to use.
If you own a TI-84 calculator, what you can do is use an emulator (I highly recommend Wabbitemu), extract the rom from the calculator, and then give that to the Wabbitemu software to use.