Syscall and helper library for the Casio FX-CG (Prizm) color graphing calculator.
You can download precompiled packages from the releases 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 document for a walkthrough.
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.
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.
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.
A few example programs can be found in the examples directory.
More detailed documentation can be found on WikiPrizm.