It runs a little slow in a 200 MGZ Pocket PC, but this is an old PocketPC, maybe in the newer ones with the 400 MGZ processor it works faster. The 2nd + On to turn it off doesn't work.

In the Application folder ("/Program Files/TI Pocket Emulator", by default) copy your roms. The first time you use it, it takes longer to start (just the TI89). If you don't have a rom, dump it from your calculator with the dumper that comes with the VTI.

If you want to add your own skin, you must copy it to the Skins folder in the directory where the program was installed with the .bmp extension. It must contain the same characteristics of the defaults provided (width, length). You can't change the position of the buttons in the new image you create, the buttons must remain in its exact position, and with the same size.

NOTE:
There is a bug that in some cases doesn't allow the TI85 rom to function, all you need to do is with the VTI in the Desktop PC create a .sav file from the TI85 rom (just use the rom and right click "Exit and save state"), then copy this file to the Pocket PC with the same name that has the TI85 rom file.

Update Description:
v2.4B:
- Added support for Skins.

SOURCE

http://www.ticalc.org/pub/win/

Reviews:

**** [Jan 17, 2009] by IVAN using iPAQ Hx2400
OMG!! ITS VERY USEFULL I LOVE THIS PROGRAM.. but.. there is a problem... how can i install programs to this emulator?? please if someone emailme or post something for help me.. I really need to install for a test in 2 days xDBelow is the result of your feedback form.

** [Apr 23, 2007] by Alex using Ipaq 1910
This is very cool, except the website does not work. It is a good idea, though.

*** [Nov 22, 2006] by Iansquall using Compaq IPAQ 3850 PocketPC
The concept is good but I can't get it to work and I haven't been successful in finding a troubleshooting guide or help guide on their site (maybe I'm not looking hard enough?) Whenever I try using it, either it opens and doesn't work (shows the skin but there's a black screen and I can't enter any numbers/etc) or a weird error box pops up with a bunch of unrecognizable characters (squares). I have ROMs for it and it says they load whenever I load them, but they don't work.

***** [Jul 12, 2006] by Luca using qtek 9090 - hp1930
It's a very good emulator but I've try to install some ti-89 programs without happening, I don't find the directory main. HELP ME!!!!

**** [Jul 10, 2006] by Ralph using mda pro
Superb! To do: load and save original TI89 files. Automatic skin exchange for portrait and landscape mode.

***** [May 8, 2006] by Terry L. Dunlap using axim x51
Could someone send me the exact step-by-stepdirections on how to load a rom into a pocket pc. I have installed the emulator. I tried the steps on Ticalc.com but that didn't work. got some kind of error on trying ti install the emulator that works forti 83 se. HELP.

***** [Aug 26, 2005] by Roberto using imate jam
Impressive, but sometimes the keyboard sticks: it continues to press the same number even do i am pressing other keys.
Example: 3 x 22222222222222222222
when i tried to enter 3 x 2 [enter]
I tried with 89 rom ver 2.

***** [Apr 29, 2005] by Francois Janson using Toshiba e400
Incredible. I am very impressed ... a little slow, but incredibly useful !!!

***** [Nov 28, 2004] by S Manohar using XDA II
This is absolutely incredible! I loved my old TI89 for its ability to factorise and for its comprehensive unit conversion database. Though it is a bit fiddly and slow to operate (no buttons :-( ) the functionality is incredible. Just like the original, each time you load up, it returns the where you were previously - which I now find an invaluable feature. Eat your heart out, all those people with those dumb sci-calc programs! As far as stability is concerned, I've only had to reset the calculator once when it crashed (the calc software itself only - the emulator has never crashed my device). Pretty powerful stuff.

***** [Nov 22, 2004] by Sanjay using O2 XDA II
This is fantastic! All I ever wanted! My old TI92 has never made it back out of my drawer - this allows me to do complex algebraic manipulations any time, on the move, plus the unit conversion is unmissable.