HP-48SX with 128k RAM card - what should I put on it?

[Dave Britten]

GX Library is a must. It adds a number of list manipulation features from the G/GX.

http://www.hpcalc.org/details.php?id=2796

Also, I recommend Keyman, just to get the ->TO? command. This allows you to put a SysRPL "takeover" instruction at the beginning of a program. If you have a program bound to a custom menu key assignment (or a user key assignment), this allows that key assignment to work even if you're in the program editor, matrix editor, etc. By doing this, you can define a number of custom menus that you can navigate between. For example, I have my standard custom menu saved as CST.DEF, and a CST.BASE for number bases. Store the name 'CST.DEF' into CST to set the default menu (this prevents the MENU command from overwriting the custom menu definition; just put 'CST.DEF' back into CST to restore it). Inside your CST.DEF list, assign the submenu keys to use TMENU like this (a snippet of my CST.DEF):

Code:

{ { "BASE \<< 'CST.BASE' TMENU \>> } { "CHARS" \<< 'CST.CHARS' TMENU \>> }...

You have to build up the programs and lists on the stack so that you can run ->TO? on those two programs before stuffing them into the lists. If you edit any of this as text and save it, it'll compile out the takeovers. It's a little cumbersome to set it up, but having nested custom menus is really great.

Anyway, here's Keyman:

http://www.hpcalc.org/details.php?id=2819

I also recommend the Solve Equation Library card, which can be had relatively cheaply via ebay. You might be familiar with the contents already, but you get a nice equation library, TVM solver with amortization, and the multiple equation solver.