The Research And Validate On OpenRISC1200 Processor

This paper was based on the project of High-Performance Network Processor, It focused on the research of the basic theory and the architecture of the RISC processor. A research and test on the OpenRISC1200 processor were made.The concept of the network processor was introduced firstly, then a discussion on Micro-Engine which is a key tech. in NP. was made to compare between the the ME. and the general RISC processor. After that a profound study on the basic and key technology of RISC processor was made, such as pipeline, dealing with the risk and the storage system. To make a intuitionist and deep upstanding of processor designing, the writer did an analyze on a kind of open source processor, OpenRISC1200,whose frame architecture, function module and develop code were stuied.Then function simulations were made to help to understand the architecture and the implement of the processor.A fronting-end function tests was made to the processor, which synthetizes the design code of the processor and download it to the FPGA board to test the validity of the code of processor. A test system was designed, which contained the OpenRISC 1200 processor and other function unit used for the SoC test. And a software development environment was stalled on the PC. Then the validity of the processor was approved by the mixed test envirment of hardware and software.At the end of the paper, a thought of design a new kind of network-specified processor was brought, based on the understanding on the architecture of RISC processor and the Micro-Engine. Thought this idea, the instruction set, the function unit and the storage system were changed from OpenRISC1200 processor, and an analysis on its performance was done. This thought has made a basic foundation to design the Network Processor in the future work.