HP 50G help

[Joe Horn]

(08-06-2016 09:31 PM)DavidM Wrote:  It's actually very simple: User flags aren't used at all and are completely ignored by any built-in functions or modes on your 50g.

Almost true. The 50g ships with HP's "Equation Library" installed in Port 2, which in my mind makes its functionality "built in". It uses USER flags 60, 61, 62, and 63.

TODAY'S TRIVIA: The HP 82211A "HP Solve Equation Library Application Card" for the HP 48SX uses USER flags 60, 61, and 62. When the "new, improved" version of the card came out (HP 82211B), they not only added Tetris and a few other goodies, but also added its use of USER flag 63. Since most of the functionality of that card was embedded in the 48GX, the G and GX also use those USER flags, as does the 49G, 49G+, and 50g, which have the same libraries. However, I'm fairly sure that the fact that USER flag 63 is used (and HOW it is used) has not been mentioned in any HP manuals other than the SX's 82211B card's "Manual Update" pamphlet (page 1-6) and the 50g AUR (page C-9), so it's a great feature that almost nobody knows about (namely, after setting USER flag 63, pressing right-shift followed by a variable's menu key TOGGLES it between not-defined and user-defined.)