This paper describes lhe architecture and implementation of a graphics coprocessor integrated with a MIPS-1 (R3000) compatible CPU core. The design of the graphics coprocessor has been oprimiscd for accelerating low level graphics operations typical in X Windows applications. I t has been implemented us coprocessor 2 using the coprocessor interface available on the CPU core. A set of specifically designed coprocessor 2 graphics instructions execute on the coprocessor and process pixel data fetched by dedicated DMA channels through a high bandwidth memory interface. The combination of the graphics coprocessor und high Oundwidlh memory interface result in a very high perfnrmcince.