HP 42s Program Normal Distibution

[cylurian]

Does anyone know where I can find a working program for calculating the Normal Distribution for the HP 42s? I'm working with a DM42 right now. I tried the one from this link: https://www.hpmuseum.org/cgi-sys/cgiwrap...ead=196607, but it didn’t work on my DM42. Then, I checked out https://github.com/NicoB-codes/HP-42S-programs, and that didn’t work either. I’m looking for a program that can calculate both a lower and upper bound simultaneously, rather than the old approach we used in the 80s where it was just left tail or right tail.