LR33020

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LR33020

LR33020 GraphX (LR33K) is a processor designed for X-Terminal systems by LSI Logic. It features:

  • R3000 CPU core
  • Integrated caches
  • Write buffers
  • Memory controllers
  • Dedicated 2D graphics hardware as COP2. (PS/2 port too)
  • 64-bit data path

Other built in hardware include:

  • BitBlt coprocessor
  • DMA channels,
  • 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. The lr33020.h header file looks interesting.

Links

Retrieved from "http://www.linux-mips.org/wiki/LR33020"
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