TilEm is an emulator that reproduce behavior of z80 based Texas Instrument Calculator (TI73 through TI86 including the TI81 :p). As the others emulators, TilEm2 needs an official rom of course.
TilEm2 is already available for

Ti 84 Calculator Emulator On Install The Download. TI Connect CE TI Connect CE allows you to send and recieve files with your calculator, allowing you to send games, programs, images, notes, and more Download for Windows Download for Mac Manual Install by clicking a download button above, and then install the download. The WabbitEmu application provides support for working with multiple series of the Texas Instruments graphing calculators, such as TI-73, TI-81, TI-82, TI-83 (including SE), TI-84 (SE and CSE), TI-85 and TI-86. Once you load the ROM image, you get to see the calculator emulation. Select the TI-84 Plus SE option. Then click Next. Choose the Option: Download OS files from TI’s website Choose: TI OS Version OS 2.55 MP from the pull down menu. Tested as working:. Mac OS X 10.6.5 on an Intel MacBook. TI-83 Plus connected via TI-Graph Link USB to TI-Connect v1.8 Using the data editor if I save the program first to my MacBook then send to the device all subsequent edits to the program done on my MacBook are automatically uploaded to the device.

GNU/Linux and Windows and Mac OS X.
It features highly detailed hardware emulation.
TilEm 2's hardware emulation is greatly improved - it's now at least on par with, and in some cases better than, any other emulator released to date.
All of the Z80 models are supported (including both hardware revisions of the TI-81 and both revisions of the TI-82); the only part of the hardware that is not currently emulated is the TI-84 Plus USB controller.

>>> Download Tilem2 <<<

You will find a long user manual here : User Mannual (english)
This program was made for YOU users.
Please report bugs and feature request on the Sourceforge Bug tracker
This version has a new and improved user interface, as well as many improvements to the hardware emulation.
See the project website at official website for more information.

Sending/receiving programs, variables, and applications :

• TilEm2 uses libticalcs and provides visual feedback by printing progress and allowing cancel.
• You can send single or grouped vars, flashapp, or whatever you want.
• A nice receive window allow you to save programs from your calc to you computer.
• There's also the possiblity to send and receive to and from the ti81.

Grayscale emulation :

• TilEm has had grayscale support for many years (originally an FIR filter supporting only 4 levels; later changed to an IIR filter supporting 64 levels, but with a tendency to flicker.)
• TilEm 2, however, uses a completely new grayscale algorithm based on a modified FIR filter, which should work a lot better.

Saving screenshots :

• You can record animations (gif) or simply grab a static screenshot (png, bmp, gif output and more...).
  
• There's a lot of setting as size (at least 3 default size per model plus custom size), foreground/background color, animation speed.
• And of course a preview window to see before saving what you have done.

A full featured debugger for assembly programming :

• With memory view (could be edited), disassembly view, registers (could beedited), stack, breakpoints, step by step, and more ...

Macro :

• It allow to record key press and execute automatically (at startup or whenyou load the macro file).

New pack of skin and new skin format (TiEmu skin file) :

• You can now do a skin for TilEm2 in 15 min and you can do some funny stuff(see the documentation about skins)

Extra features :

• Sound support is one of the latest features added to the emulator.
• Virtual linking between multiples instances of TilEm2

Links :

Installing KnightOS

Users should first install TiLP or TI-Connect to facilitate the transfer.

1. Check your boot code version.
   • On KnightOS, look in your system settings for the boot code version.
   • On TI-OS, press MODE, then Alpha+S to enter a self test, which displays your boot code version.
   • Note: TI-84+ Color Silver Edition users can skip this check.
2. For users with boot code 1.02 or older, proceed normally. Otherwise, read below for additional instructions.
3. Remove a battery from your calculator, then plug it into your computer.
   • TI-84+ CSE users, press the 'reset' button instead of removing a battery
   • SilverLink users on Linux, see below
4. Hold down DEL, then replace the battery you removed. Release DEL.
5. Send the OS upgrade
   • For TI-Connect users, use the TI OS Downloader tool.
   • For TiLP users...
     • Windows, Mac: Use the TiLP GUI to send the OS
     • Linux: Run tilp -n <path/to/KnightOS.8xu> as root
6. Wait for it to complete, remove the cable and press ON, welcome to KnightOS!

Troublesome Boot Codes

Texas Instruments has put measures in place to prevent users from upgrading the operating system on their calculators, starting with boot code 1.03. Unfortunately, this means it will be a bit more difficult for you to install KnightOS. It is possible, so do not fear. Here are your options.

1. Patch your boot code. It is possible for calculators manufactured before a certain date to patch their boot code to remove the extra validation. This can be more dangerous than the alternatives, but is a more permanent solution. We suggest using Unsigned to patch your boot code. After doing so, follow the installation steps normally.
2. Use UOSRECV. Brandon Wilson has made a tool available that will allow you to install an unsigned OS on your device. You can get it here. Follow the installation process normally, but instead of removing a battery in step 3, run Asm(prgmUOSRECV on your calculator. Skip step 4.

TI-84+ Color Silver Edition users do not need to follow these steps unless they have trouble without, thanks to another exploit from BrandonW that allows us to circumvent the validation without a complex procedure. A similar exploit is in development for other affected calculators.

Linux and SilverLink

Linux users, please ensure that you are running the latest version of TiLP (you may have to compile it yourself). Recent updates have improved SilverLink support, but it may be buggy. Good luck.

Ti 84 Calculator Download For Mac

Installing TI-OS

If you wish to reinstall TI-OS, download it from TI. Follow the same instructions for installing KnightOS, but don't worry about your boot code version.

Source Code

Ti 84 Operating System Download

The source code is available on Github.
KnightOS is licensed under the MIT license.