I have put the program PC Matrix on SUPER.  PC Matrix is an interactive matrix calculator.

Features:

- works like an HP RPN calculator
- matrix algebra for matrices of arbitrary size
- includes inversion, eigenanalysis, svd, choleski
- ideally suited for the HP 200LX
- program size less than 100K
- normal, t, F, Chi, Poison and Binomial probabilities
- manual documents all features

Background:  I wrote and sold this DOS program in the early 80's. Lost interest and incentive when the "bigger is better" fashion took over personal computing.  Recently I returned to the HP 200 LX after deciding the DOS platform and programs are for my palmtop computing needs, the best. 

Hope you find PC Matrix useful. Feedback appreciated.

-- Piet de Jong <piet.dejong@trowbridge.com> 