LR33020 GraphX (LR33K) is a processor designed for X-Terminal systems by LSI Logic. It has a R3000 CPU core, integrated caches, write buffers, memory controllers and dedicated 2D graphics hardware as COP2. Other hardware built in is a bitblt coprocessor, DMA channels, 64-bit data path, video FIFO, PS/2 ports, support for ethernet. It supports mono, 2-bit and 4-bit grayscale and 8-, 16- and 32-bit color.
The processor has probably no MMU or FPU.
The original LSI's PMON firmware contains some support for this CPU.