I am planning on working on a new operating system called TitanRom for the ti-89, 89 Titanium, 92, and 92+. (A v200 version probably wont be made due to product code problems with the model itself) I will releasing a beta of this new OS in the next week. The things it supports as of now are
A text editor / compiler (similar to the S-ide Editor in Pedrom)
A basic CAS System (Hacked from the ti-89's)
A basic y= graphing system
Ppg, Asm, and C programs are able to run.
A semi-working 3d graphing system
A fully functional command prompt system
And a hybrid basic language (resembling TI-BASIC)
As with Pedrom Apps Made by Ti will never be supported!
Any suggestions, comments, or help would greatly be appreciated!