TI Professional Almost PC Compatible!

When TI made its entry into the PC arena (owned by IBM) they solicited all of the top tier dealers in America and had them sign a non-disclosure to see and preview their new PC. They created some real excitement that quickly waned as their super secret version of th PC did everything but run IBM PC software. What a cop out and TI ate the big one on the Professional.
Not PC compatible then get to the bottom of the list!