Difference between revisions of "LR33020"
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== LR33020 == | == LR33020 == | ||
| − | LR33020 GraphX (LR33K) is a processor designed for X-Terminal systems by LSI Logic. It | + | 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 processor has probably no MMU or FPU. | ||
| − | The original LSI's [[PMON]] firmware contains some support for this CPU. | + | The original LSI's [[PMON]] firmware contains some support for this CPU. The ''lr33020.h'' header file looks interesting. |
== Links == | == Links == | ||
Revision as of 17:49, 2 October 2007
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.
