I have finally finished Mem Adder! It adds about 6x the regular amount of memory on the TI-83. It has quite a few bugs, but they should not damage the calculator. This program is Ion compatible; only for the TI-83. I have not yet figured out how to add (compress) memory on the TI-83 plus. I am working on fixing all of the bugs on this program for the TI-83 and then working on the TI-83 plus version. This program is stable and will not damage your calculator, but if for some reason it does; I will not be responsible, after all, this is freeware! Sincerely, TI83 Maniac