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https://github.com/insoft-uk/prizmsdk

The PrizmSDK for developing Add-Ins for the Casio FX-CG (Prizm) color graphing calculator. It provides an Xcode project along with sample examples to facilitate the beginning of development. One can test their Add-Ins on macOS to a certain extent before deploying them to an actual FX-CG (Prizm) color graphing calculator.
https://github.com/insoft-uk/prizmsdk

calculator casio casio-fx-cg50 casio-prizm fxcg graphical-calculator libfxcg mkg3a prizm sdk

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The PrizmSDK for developing Add-Ins for the Casio FX-CG (Prizm) color graphing calculator. It provides an Xcode project along with sample examples to facilitate the beginning of development. One can test their Add-Ins on macOS to a certain extent before deploying them to an actual FX-CG (Prizm) color graphing calculator.

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README 

          



# Getting started on macOS



This document will walk you through the process of setting up the PrizmSDK and building your first add-in on macOS.



## Download PrizmSDK



Download an PrizmSDK binary for Intel or AppleSilicon from the [releases page](https://github.com//Insoft-UK/libfxcg/releases/) and unpack to your Applications/CASIO folder.



![Extracted SDK package](img/sdk-dir.png)



Make sure macOS knows the path of the PrizmSDK.

```

export FXCGSDK=/Applications/CASIO/PrizmSDK

grep -qxF 'export PATH=/Applications/CASIO/PrizmSDK:/Applications/CASIO/PrizmSDK/bin:/Applications/CASIO/PrizmSDK/sh3eb-elf/bin:$PATH' ~/.zshrc || echo 'export PATH=/Applications/CASIO/PrizmSDK:/Applications/CASIO/PrizmSDK/bin:/Applications/CASIO/PrizmSDK/sh3eb-elf/bin:$PATH' >> ~/.zshrc

grep -qxF 'export FXCGSDK=/Applications/CASIO/PrizmSDK' ~/.zshrc || echo 'export FXCGSDK=/Applications/CASIO/PrizmSDK' >> ~/.zshrc

source ~/.zshrc

```



>[!NOTE]

If using the **pre-binary** file, you may require `libpng gmp mpfr libmpc isl imagemagick` are installed.

`brew install libpng gmp mpfr libmpc isl imagemagick`

The installer package is for AppleSilicon only.



## Example Project



Download the Prizm folder from the GitHub Repositories [Prizm](https://github.com/Insoft-UK/PrizmSDK/tree/main/Prizm) and copy to your ~/Documents folder.

Navigate to `Prizm/Projects`, then `Template`. This directory contains an Xcode project example project to get you started with and looks like this:



![Example Xcode project](img/Xcode.png)



The `Icon~sel.bmp` and `Icon~uns.bmp` images are built into the compiled add-in and are the icons shown in the calculator's menus for the add-in when it is selected with the cursor and unselected, respectively.



`Makefile` is a plain-text file that includes instructions that tell the system how to compile the add-in. You can edit this with any text editor of your choice, but in most cases don't need to (and probably shouldn't unless you know what you're doing). If you're just getting started, it's safe to ignore this file. Similarly, `make` allows you to run a single command and compile the add-in and you shouldn't need to touch it.



## Compile the Example project



To compile the Example project, simply run `make.sh` in the project directory

using the Terminal.



![Example project directory layout](img/open-terminal.png)



The `Example.g3a` file is ready to send to your calculator for running now.



![Example project directory layout](img/result.png)



## Making changes and rebuilding



Every time you run `make` as above, the system will rebuild the g3a file if there have been any changes to the sources. It's possible that won't always work as you expect, so you can also run `.\make clean` to erase the output files from the compilation process and ensure you're building a totally fresh version.



Using the provided **make** script in the Example folder will automatically clean up after building the 3ga file, streamlining the development process.



## Making your own project



Now that you know how to build an add-in, it's time to write your own program. Make a copy of the `Example` project and call it something else (probably a name related to what your project is), then you can write your own code however you like.