Casio Prizm software

All of my Prizm add-ins are unsupported on current OS versions. They have not been tested on these versions and I can’t guarantee nasty things are not happening behind the scenes which could damage your calculator. I have stopped developing for the fx-CG series years ago, I no longer follow the custom add-in development scene, my add-ins will not receive further updates. Their source code is available on GitHub for anyone who wants to fork them and continue development subject to the terms of their respective licenses.

Thank you for your understanding.

Own a Casio Prizm? Please take five minutes (probably less) to fill my survey on product IDs. It’s as easy as looking at the back of your calculator and typing 15 characters. No personal information is collected. Thank you!

I developed some add-ins for the Casio Prizm series of graphic calculators (fx-CG10 and fx-CG20; some add-ins are compatible with the fx-CG50 and Graph 90+E). The software is available for download directly from a server of mine, sometimes from Cemetech and sometimes from Casiopeia.

Utilities

The Utilities add-in is exactly what its name says: an add-in full of utilities not originally found on the Casio Prizm calculators. This includes:

Clock, with time and date and the tools for adjusting them;
20 chronometers (can go up or down) with accuracy as good as the 128 Hz tick allows (it’s better than 1/100 of a second);
Tool to fine-adjust the backlight level (from 0 to 244, versus the 1 to 5 provided by the OS);
Tools to adjust the poweroff and backlight timeout to values not possible through the OS default tools;
Power information (read battery voltage level, power source, battery setting and more);
Many lantern types (make an expensive and inefficient lantern out of your Prizm);
Calendar with agenda (add, edit, view and delete events on days, search events, week and month views, and much more);
Task list (add, edit, view and delete tasks, which are basically calendar events without dates);
File manager (rename, move and copy files and folders, with long-file-name support and non-capital letters support). Also allows for opening text files, compressing and decompressing files in a special format, and searching for files;
Text editor (create and edit text files);
Balance manager (manage your pocket money);
Password generator;
TOTP authenticator (like Google Authenticator and compatible with it, but on a calculator);
Graphical memory usage viewing tool (check how much Main and Storage Memory is used with nice progress bars);
Add-in manager (choose which add-ins are available for launching in the Main Menu without having to delete them);
Function key color selection (select the color of the function key labels throughout the OS; I recommend blue if you’re tired of black);
System information viewer – view the OS and bootloader version and timestamps, calculator model information, Renesas CPU version registers and the unique device ID.
Calculator lock with numeric code (like CGlock but more advanced);
A way to save the current time as a decimal number to the OS alpha variable T (you can use this on Run-Mat and almost everywhere by pressing ALPHA and then the division key).
Lots of settings to make the add-in behave the way you like.

All this in a binary file under 185 KiB!

Version 2.1 of this add-in was released on June 21, 2016, with this most likely being the last release; at this point Utilities is stable and full-featured, as you see in the above list. New releases will only happen to fix bugs, without increasing the feature list. I have tried very hard to make sure this add-in provides something useful for everyone who owns a Prizm.

Download g3a

Download ZIP of edition with support for running PicoC scripts – More information about PicoC

Thread at Cemetech

GitHub repo

This add-in runs on the newer Prizm models fx-CG50 and Graph 90+E, and most things appear to work, but it has never been officially tested on these models. As always, use at your own risk.

Image viewer

View JPEG and PNG images on your Prizm. Progressive or lossless JPEG and interlaced PNG not supported. Has strip functionality for linking (not embedding) images on eActivites. Stable version 1.1 is out! More information on the Thread at Cemetech, or download the g3a – just copy to your calculator (out of any folder!) to install.

This add-in supports the newer Prizm models fx-CG50 and Graph 90+E.

Eigenmath port

Screenshot of my Eigenmath port

I ported the Eigenmath symbolic math engine, by George Weigt, to the fx-CG 10/20 calculators. Version 1.0, stable, is available for download, with all the results matching the ones given by the PC version. Updating is heavily recommended, because there are lots of new features in comparison to the first release, not to mention more ability, stability, and many bug fixes.

This port includes a function catalog, ability to create and execute scripts, draw graphs, and much more. All 100+ Eigenmath commands work. Output is pretty-printed whenever possible, and 200 lines of output are stored for scrolling at any time. Command execution can be stopped. The state of the add-in is optionally automatically saved when exiting. This add-in can also act as a eActivity strip.

Download or find more, updated information on the thread at Cemetech. GitHub repo.

For the time being, this add-in does not support the newer Prizm models fx-CG 50 and Graph 90+E.

Discontinued software:

These add-ins do not support the newer Prizm models fx-CG 50 and Graph 90+E.

CGlock

An add-in that lets you protect your calculator with a 4-digit code. It can be set up to automatically turn off the calculator when it is locked, to not show the Casio logo (and consequently the owner information) at turn off, and to open Run-Matrix after the correct unlock code is entered. If the Prizm is rebooted or the batteries are taken off, the calculator goes unlocked – so this program only provides mild security for your calculator (you can always epoxy the reboot hole and the batteries compartment, but do so at your own risk).

It saves the code and the settings in the main memory. I have some ideas for new features, such as hashing the code for extra safety and implementing CGlock’s own owner information display, since the Casio one is easily crackable, which I’ll implement when I have time and feel in mood.

Download from Cemetech

OverClui

OverClui is a tool for overclocking the Prizm’s CPU based on the work of Ashbad and brijohn at Cemetech. The difference between this and their own tool, Pover, is that this one has a nicer GUI, and is more noob-friendly. It doesn’t let users overclock to 101.5 MHz but only to 94.3 MHz to avoid problems, even though recently I found out some calculators don’t handle the 94.3 MhZ speed and thus can only to 87 MHz safely.

Use at your own risk, no warranty provided. If the calculator shows a “SYSTEM ERROR” message when overclocking to 94.3 MHz, please press EXIT to reboot, don’t overclock to that speed again (which also means you won’t be able to run the latest version of the game Gravity Duck on your calculator) and let me know in the comments.