Currently defined labels in use by each program (grcamain, grchelp etc) are all listed in lblshelp.txt. This list should be updated each time an entry is removed or added to this list though there’s precious few labels left over in grcamain or grchelp.
We currently save all variables (A-Z) to a spare list (File6->List 6, grcput) so we don’t accidentally hammer the user’s work by running GRC. We also restore them (grcget) after GRC is finished. I used lists in File6 because a user is less likely to have used all Lists in all Files. List 4 holds the working copy of all the data the program is expected to need, and List 5 will hold data previously saved (grcsave). This can be restored to List 4 with grcload.
This is the second largest lump of text in GRC, and can be usefully left off if you already know the details in the help. You’ll need to revisit keycode handling within grcamain-0 (the menu-handling code) to leave out (or comment out) calls to grchelp.
- While the 9750gII/9860GII calculator can be sped up (for a significant increase in
battery usage) it will eventually impact screen updates. A moderate increase is best if you just want the UI to feel a little peppier.
- If this code is rewritten in CBasic, or made into a proper C program and compiled with
the development kit, it’s unknown how much room it will take up in memory.
Some of the variables (especially A-E, and I) almost certainly contain complex values. I used the Imaginary portion of A-E to contain item counters, as I was running out of normal variables to hold this data, and I don’t really want to be pulling teeth accessing List members to support this data.
- At least on the fx9750g+, though variables can hold complex data, List members cannot.
Further programming will be needed to access further List members to stand in for vars, especially List 4[M] will need to be expanded by 5 more from its current 17.
- List 4[M] is a pointer to the number of variables used so far. Entries start at 17 (or 22) and increase from there as elements get added to the list.
- 0.60 (not available for download): I added some functionality to automatically back up all vars A-Z, r and Theta to a List so the variables can be “clobbered” by my grocery program. After the program finishes, I then restore those same variables. I also have the option of saving the existing grocery variables to another List, so that if you want to load them back in another time, you can.
- 0.61: Some slight refinements in the code for GRCAMAIN, as I realised I didn’t need a couple of variable increments and all the comment/blank lines, that’s reduced the bytecount a little.
- 0.65: Significantly sped up the program by saving the non-volatile text as a graphic to PICT6. This functionality is in GRCBTN, so run this first, or uncomment Prog “GRCBTN” near the top of GRCAMAIN for the first run. You can re-comment it once the picture has been initialised. PICT6 should be free for use.
- 0.66: Removed some code as it wasn’t needed. I may have even sped the program up microscopically.
- 0.67: Apparently there’s a SSe command embedded in a text string, which threw me out as it’s not in a fx-9750G+. A word was replaced, and RclPict was replaced with BG-Pict.
- 0.68: Added Tax support, initially set to 15%. Tweaked main screen. Also sped up the non-volatile text by putting it into PICT6, then using BG-Pict 6 at suitable times.
- 0.69: Tweaked main screen further
- 0.70: Reworked Tax input screen
- 0.71: program now asks if you wish to save the current grocery values on exit.
- 0.72: program now asks if you wish to load previous grocery values on startup. I use this if I’ve been to another supermarket on the same day and want a grand total.
- 0.73: (not released) Added snapshot screen feature.
- 0.74: Added an entry browser, showing individual entries. Significant tidy-up of code.
- 0.75 (current): Added a Help screen, finally. A remake of the pictures in this guide is in progress.
- 0.76: (not yet released)Rework for decimal currency toggle, for yen-users. This rework is incomplete.