Since you cannot download the operating system from Texas Instruments anymore, you will have to get the ROM file by dumping the software from your calculator device with the help of a USB cable.
To be able to start new calculator instances, as soon as you launch the WabbitEmu application, you need to navigate to the Preferences window and input the source ROM in the Hardware tab. Graphing calculator emulator that requires ROM dumps This way, you get to experiment working with the graphing calculators without having to rely on the hardware component.
WabbitEmu offers you the possibility to run the OS for the Texas Instruments z80 calculators on your Mac.