https://github.com/Jonimoose/libfxcg

Syscall and helper library for the Casio FX-CG (Prizm) color graphing calculator
https://github.com/Jonimoose/libfxcg

Last synced: about 2 months ago
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Syscall and helper library for the Casio FX-CG (Prizm) color graphing calculator

• Host: GitHub
• URL: https://github.com/Jonimoose/libfxcg
• Owner: Jonimoose
• License: bsd-3-clause
• Created: 2011-05-03T03:31:43.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2023-06-12T10:30:47.000Z (over 1 year ago)
• Last Synced: 2024-04-17T16:28:57.352Z (5 months ago)
• Language: C
• Homepage:
• Size: 1.32 MB
• Stars: 97
• Watchers: 15
• Forks: 25
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: COPYING

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README

        
# libfxcg

![Latest release](https://img.shields.io/github/v/release/Jonimoose/libfxcg)

Syscall and helper library for the Casio FX-CG (Prizm) color graphing

calculator.

# Usage

You can download precompiled packages from the

[releases](https://github.com/Jonimoose/libfxcg/releases/latest) page. If

you're using Windows you can get a precompiled SDK package that includes

everything you need to get started. See the [Windows

HOWTO](docs/howto-windows.md) document for a walkthrough.

## SDK packages

The SDK packages provide everything you need to build programs, including a

compiler. You should use these unless you know you want to do something

different.

Place your project(s) in the `projects` directory underneath the unpacked

release. You may wish to copy or modify the included `example` project to

get set up quickly. Running `make` from the project directory will suffice to

build a ready-to-run g3a.

## Library archives

For other platforms (non-Windows) where we don't currently provide SDK packages,

the library archive releases provide the compiled libraries (`.a`) and

corresponding include files to use with your compiler and build system.

### Add-in build requirements

It is infeasible to document how to set up your compiler on many platforms, but

the basic requirement is that you have a version of GCC built to target

`sh3eb-elf-none`.

When building code, you'll need to use the `-mb`, `-m4a-nofpu`, `-mhitachi` and

`-nostdlib` flags to GCC to build code in big-endian mode for SH4a using the

Hitachi calling convention, and skipping any C library or startup code that may

come with your compiler.

When linking, you'll need to explicitly link `libgcc` and `libfxcg` at least,

and optionally also `libc` for utility functions. `libgcc` provides support

functions that the compiler requires, and `libfxcg` includes all of the

Prizm-specific items, including startup code necessary to start up a program

correctly.

When linking a final binary, you will also need to specify an appropriate linker

script (`-Tscript.x`). You may wish to use or adapt [the one we

provide](toolchain/prizm.x).

# Examples and more documentation.

A few example programs can be found in the `examples` directory.

More detailed documentation can be found on

[WikiPrizm](http://prizm.cemetech.net/).