HP-41 X-Mem (e)TWIN module

[Ángel Martin]

Announcing New TWIN Modules/

Following on JF's request to have an "in-file" implementation of the File Record X-Functions, I've added a parallel set of STO/RCL functions to address his request.

Like the X-Set, the new F-Set supports math operations and allows for all possible direct and indirect addressing; so both sets are completely equivalent in everything except in their "domains":

- The X-Set operates on the X-Mem as a whole
- The F-set operates on the Data File whose name is in ALPHA

As a consequence of this, the XPPC APPS routines are now moved to its own ROM (sorry Gene). The good news is there are now two sets of PPC APPS, one using the X-Set (the XPPC APPS) and the other using the F-Set (the FPPC APPS).

Moreover, the X-Matrix APPS are in its own ROM - which I have completed by adding more programs from JM Baillard's excellent collection on the subject.

So we're down to three ROMs so far, are we? Well, not quite...
Introducing the other X-MEM TWIN module - and this one with a "classic" scope within the standard X-Mem functionality: basically it's a compilation of additional functions from several other modules, plus Doug Wilder's LIFO File implementation.

Thus FOUR ROMS in total all around the X-MEM subject; two TWINS and Two APPS ROMS as examples for the X- and F-Sets.

Lost? No worries, just download the manuals attached and read at your own pace.
Have fun!