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Orcus - a bare metal library for GP2X development

Orcus is a bare metal library for GP2X development, intended for use on top of devkitARM. For instructions on setting up a development environment, take a look at the devkitPro pacman documentation. You'll find Orcus included in the gp2x-dev group, along with gp2x-examples showing how to use the various features. You can also follow the Getting Started guide.

It works on both F100 and F200 transparently (i.e. you do not need to release separate binaries as used to be common practice), but does not support later Pollux-based hardware (i.e. F300, Wiz, Caanoo).

Current features

• Buttons (and joystick)
• RGB layers (palette modes not yet fully supported)
• ARM940T
• Audio
• SD card (read-only at present)
• UART (by default set up with 11520 8N1 serial)
• NAND (useful for firmware development, like the Open2x bootloader)
• Hardware timer
• DMA copying
• 2D accelerator (blit, rotate, pattern fill)

Not yet supported

• I2C (read serial number)
• YUV layers
• F200 touchscreen
• Interrupts
• Controlling clock speed

Documentation

There is an API reference which I've uploaded here: https://www.gp2x.dev/orcus