Reality Coprocessor

The Reality Coprocessor, or RCP, is one of the two main processors on the Nintendo 64 board. Split into two components, the Reality Signal Processor and Reality Display Processor, it cooperates with the other main processor, the VR4300 CPU to draw 3D graphics, perform matrix calculations, and produce audio. The RCP is also connected to the onboard RDRAM, providing direct access to memory.