It even includes the TI Roms, licensed from Texas Instruments. I noticed that none of these defects are seen in the Classic 99 emulator on Windows. By emulating the dozens of systems it does, its design decisions are much more general and will not be tailored specifically to the TI-99/4A. Part of this I understand has to do with the fact that MacMESS is a general emulator, being all things to all people. Ideally, an emulator would automatically map the keys correctly, so (for example) my Backspace key would work, not forcing me into Option-S, etc. For example, my minus/underscore key produces equals/plus character, the left bracket key produces the forward slash character, my quote key is Enter, etc. Furthermore, the keyboard mapping is incorrect for emulation, assuming the key positions of the TI-99/4A rather than of the emulating keyboard. I notice that my mouse simply disappears, preventing from me easily swapping between applications. However, this can be overcome with sufficient initiative.

One drawback to MacMESS is that it lacks the ROMs, making it difficult for any newcomer simply wishing to try it out. The former is Classic-only, making it unusable on modern Macs (since Classic does not run on Intel-based Macs, or any Mac running Leopard). There are essentially two Mac emulators for the TI-99/4A: MacV9T9 and MacMESS. This file is compatible with Mac OS X v10.8.x - macOS 10.13.x. This software, along with a USB cable, allows you to display images from your computer to your projector. Ideally, an emulator would automatically map the keys correctly, so (for example) my Backspace key would work.ĭownload the USB Display Utility for Mac operating systems.

The key positions of the TI-99/4A rather than of the emulating keyboard.

Ti-84 emulator mac osx