I have been very naughty

[Werner]

I had a TI-58 (no 'c') in the olden days.
I recently purchased RCL-59 on my phone, a fantastic emulator that finally allowed me to view the source code of the Pgm-02 (Linear Equations) in the Master Library, and to rewrite it, just for fun. 640 lines instead of 898, up to 9x9 for both equation solving and inverse (the Master Lib can't handle 9x9 solve), and four times faster for equation solving. Well, on the emulator. Will post if someone's interested.

Cheers, Werner